./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/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 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:35:54,251 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:35:54,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:35:54,353 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:35:54,353 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:35:54,395 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:35:54,396 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:35:54,397 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:35:54,397 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:35:54,398 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:35:54,399 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:35:54,399 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:35:54,400 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:35:54,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:35:54,400 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:35:54,401 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:35:54,401 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:35:54,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:35:54,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:35:54,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:35:54,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:35:54,402 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:35:54,403 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:35:54,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:54,403 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:54,403 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:54,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:54,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:35:54,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:54,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:54,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:54,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:35:54,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:35:54,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:35:54,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:35:54,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:35:54,406 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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/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 -> 8262fd4bdb4bed8fef0fbefd142e15775d81a64587fab0af0aa2004f91ae895c [2024-11-28 04:35:54,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:35:54,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:35:54,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:35:54,746 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:35:54,747 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:35:54,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-28 04:35:57,829 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/data/19b678cf6/aa1b9a3d23d24b7f94e347271a6c1182/FLAG5fe0544c7 [2024-11-28 04:35:58,148 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:35:58,149 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c [2024-11-28 04:35:58,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/data/19b678cf6/aa1b9a3d23d24b7f94e347271a6c1182/FLAG5fe0544c7 [2024-11-28 04:35:58,178 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/data/19b678cf6/aa1b9a3d23d24b7f94e347271a6c1182 [2024-11-28 04:35:58,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:35:58,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:35:58,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:58,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:35:58,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:35:58,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170f9cb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58, skipping insertion in model container [2024-11-28 04:35:58,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,207 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:35:58,369 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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-28 04:35:58,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:58,403 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:35:58,412 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_74f282be-ca6d-41bd-a773-3c4ec53ce95f/sv-benchmarks/c/array-cav19/array_min_and_copy_shift_sum_add.c[423,436] [2024-11-28 04:35:58,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:35:58,432 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:35:58,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58 WrapperNode [2024-11-28 04:35:58,433 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:35:58,434 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:58,434 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:35:58,435 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:35:58,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,467 INFO L138 Inliner]: procedures = 15, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-28 04:35:58,467 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:35:58,468 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:35:58,468 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:35:58,468 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:35:58,478 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,480 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,497 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 2, 5]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 1 writes are split as follows [0, 1, 0]. [2024-11-28 04:35:58,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,510 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,521 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,523 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,525 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:35:58,530 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:35:58,530 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:35:58,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:35:58,533 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (1/1) ... [2024-11-28 04:35:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:58,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:58,570 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:35:58,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:35:58,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:35:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:35:58,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:35:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:35:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:35:58,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:35:58,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:35:58,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:35:58,708 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:35:58,710 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:35:58,932 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 04:35:58,933 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:35:58,942 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:35:58,943 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 04:35:58,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:58 BoogieIcfgContainer [2024-11-28 04:35:58,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:35:58,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:35:58,946 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:35:58,951 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:35:58,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:35:58" (1/3) ... [2024-11-28 04:35:58,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2f0823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:58, skipping insertion in model container [2024-11-28 04:35:58,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:35:58" (2/3) ... [2024-11-28 04:35:58,952 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e2f0823 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:35:58, skipping insertion in model container [2024-11-28 04:35:58,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:35:58" (3/3) ... [2024-11-28 04:35:58,953 INFO L128 eAbstractionObserver]: Analyzing ICFG array_min_and_copy_shift_sum_add.c [2024-11-28 04:35:58,970 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:35:58,972 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_min_and_copy_shift_sum_add.c that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 04:35:59,025 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:35:59,039 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;@17a1eadd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:35:59,039 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:35:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:35:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:35:59,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:59,054 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:59,055 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:59,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:59,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1883599186, now seen corresponding path program 1 times [2024-11-28 04:35:59,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:59,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124658952] [2024-11-28 04:35:59,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:59,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:35:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:35:59,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124658952] [2024-11-28 04:35:59,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124658952] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854683737] [2024-11-28 04:35:59,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:59,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:59,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:59,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:59,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:35:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:59,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:35:59,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:59,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:35:59,359 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:35:59,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854683737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:35:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:35:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:35:59,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367025013] [2024-11-28 04:35:59,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:35:59,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:35:59,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:35:59,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:35:59,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:35:59,384 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.44) internal successors, (36), 26 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:35:59,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:59,400 INFO L93 Difference]: Finished difference Result 59 states and 83 transitions. [2024-11-28 04:35:59,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:35:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-28 04:35:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:59,408 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:35:59,408 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:35:59,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 04:35:59,413 INFO L435 NwaCegarLoop]: 37 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, 37 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 04:35:59,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:35:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:35:59,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 04:35:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:35:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2024-11-28 04:35:59,445 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2024-11-28 04:35:59,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:59,445 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2024-11-28 04:35:59,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:35:59,445 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2024-11-28 04:35:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:35:59,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:59,447 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:59,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:35:59,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:35:59,648 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:35:59,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash 675388842, now seen corresponding path program 1 times [2024-11-28 04:35:59,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:35:59,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139642164] [2024-11-28 04:35:59,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:59,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:35:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:36:00,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:00,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139642164] [2024-11-28 04:36:00,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139642164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:00,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:00,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:36:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771965387] [2024-11-28 04:36:00,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:00,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:36:00,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:00,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:36:00,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:36:00,036 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:36:00,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:00,072 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2024-11-28 04:36:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:36:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-28 04:36:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:00,074 INFO L225 Difference]: With dead ends: 33 [2024-11-28 04:36:00,074 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 04:36:00,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:36:00,075 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 11 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:00,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 73 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:00,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 04:36:00,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2024-11-28 04:36:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:36:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2024-11-28 04:36:00,085 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2024-11-28 04:36:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:00,086 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2024-11-28 04:36:00,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:36:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2024-11-28 04:36:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:36:00,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:00,090 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:00,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:36:00,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:00,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash 447392526, now seen corresponding path program 1 times [2024-11-28 04:36:00,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177037090] [2024-11-28 04:36:00,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:36:00,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:00,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177037090] [2024-11-28 04:36:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177037090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:00,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503687035] [2024-11-28 04:36:00,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:00,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:00,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:00,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:00,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:00,310 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:36:00,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:00,445 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2024-11-28 04:36:00,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:00,446 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-11-28 04:36:00,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:00,449 INFO L225 Difference]: With dead ends: 52 [2024-11-28 04:36:00,449 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:36:00,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:00,451 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:00,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 68 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:00,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:36:00,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2024-11-28 04:36:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:36:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-11-28 04:36:00,468 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2024-11-28 04:36:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:00,468 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-11-28 04:36:00,468 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:36:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-11-28 04:36:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:36:00,471 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:00,471 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:00,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:36:00,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:00,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:00,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1909762926, now seen corresponding path program 1 times [2024-11-28 04:36:00,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:00,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223955114] [2024-11-28 04:36:00,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:00,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:01,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:01,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223955114] [2024-11-28 04:36:01,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223955114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:01,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272950580] [2024-11-28 04:36:01,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:01,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:01,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:01,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:01,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:36:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:01,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:36:01,785 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:02,204 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 04:36:02,318 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 04:36:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:02,343 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:02,443 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 29 treesize of output 27 [2024-11-28 04:36:02,449 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 32 treesize of output 30 [2024-11-28 04:36:02,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:02,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-28 04:36:02,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:02,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272950580] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:02,681 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:02,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-11-28 04:36:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130600444] [2024-11-28 04:36:02,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:02,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:36:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:02,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:36:02,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:36:02,684 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:03,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:03,111 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2024-11-28 04:36:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:36:03,112 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2024-11-28 04:36:03,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:03,114 INFO L225 Difference]: With dead ends: 60 [2024-11-28 04:36:03,114 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:36:03,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:36:03,117 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 73 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:03,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 187 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:36:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:36:03,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2024-11-28 04:36:03,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:36:03,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-28 04:36:03,134 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 37 [2024-11-28 04:36:03,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:03,134 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-28 04:36:03,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.761904761904762) internal successors, (58), 21 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:03,135 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-28 04:36:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:36:03,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:03,136 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:03,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:36:03,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:03,342 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:03,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash 898645676, now seen corresponding path program 1 times [2024-11-28 04:36:03,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:03,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955436176] [2024-11-28 04:36:03,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:03,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:04,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955436176] [2024-11-28 04:36:04,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955436176] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:04,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584646018] [2024-11-28 04:36:04,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:04,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:04,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:04,100 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:36:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:04,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:36:04,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:04,496 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 04:36:04,578 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 04:36:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:04,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:04,682 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 29 treesize of output 27 [2024-11-28 04:36:04,686 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 32 treesize of output 30 [2024-11-28 04:36:04,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:04,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 15 [2024-11-28 04:36:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:04,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584646018] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:04,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:04,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 24 [2024-11-28 04:36:04,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873275020] [2024-11-28 04:36:04,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:04,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:36:04,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:04,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:36:04,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:36:04,908 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:05,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:05,331 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2024-11-28 04:36:05,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:36:05,331 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2024-11-28 04:36:05,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:05,333 INFO L225 Difference]: With dead ends: 76 [2024-11-28 04:36:05,333 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 04:36:05,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:36:05,335 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 86 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:05,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 190 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:36:05,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 04:36:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 49. [2024-11-28 04:36:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:36:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 63 transitions. [2024-11-28 04:36:05,347 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 63 transitions. Word has length 37 [2024-11-28 04:36:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:05,348 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 63 transitions. [2024-11-28 04:36:05,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 63 transitions. [2024-11-28 04:36:05,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:36:05,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:05,349 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:05,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:36:05,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:05,550 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:05,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1269913554, now seen corresponding path program 2 times [2024-11-28 04:36:05,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:05,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898519951] [2024-11-28 04:36:05,551 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:36:05,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:05,575 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:36:05,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:36:05,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898519951] [2024-11-28 04:36:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898519951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986950536] [2024-11-28 04:36:05,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:36:05,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:05,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:05,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:05,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:36:05,768 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:36:05,768 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:05,769 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:36:05,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:36:05,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:05,938 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:36:05,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986950536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:05,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:05,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 04:36:05,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049190388] [2024-11-28 04:36:05,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:05,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:36:05,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:05,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:36:05,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:36:05,940 INFO L87 Difference]: Start difference. First operand 49 states and 63 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:36:06,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:06,061 INFO L93 Difference]: Finished difference Result 92 states and 116 transitions. [2024-11-28 04:36:06,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:36:06,062 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2024-11-28 04:36:06,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:06,063 INFO L225 Difference]: With dead ends: 92 [2024-11-28 04:36:06,063 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 04:36:06,063 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:36:06,064 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 22 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:06,064 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 69 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:06,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 04:36:06,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 59. [2024-11-28 04:36:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:36:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2024-11-28 04:36:06,075 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 39 [2024-11-28 04:36:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:06,075 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2024-11-28 04:36:06,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:36:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2024-11-28 04:36:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:36:06,076 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:06,076 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:06,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:36:06,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 04:36:06,277 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:06,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1247447218, now seen corresponding path program 3 times [2024-11-28 04:36:06,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:06,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398534336] [2024-11-28 04:36:06,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:36:06,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:06,312 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:36:06,313 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:06,411 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:36:06,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398534336] [2024-11-28 04:36:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398534336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793273509] [2024-11-28 04:36:06,411 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:36:06,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:06,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:06,414 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:06,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:36:06,487 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 04:36:06,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:06,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:36:06,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:06,569 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:36:06,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:06,662 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:36:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793273509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:06,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:06,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-28 04:36:06,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960625410] [2024-11-28 04:36:06,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:06,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:36:06,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:06,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:36:06,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:36:06,664 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:36:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:06,850 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2024-11-28 04:36:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:36:06,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2024-11-28 04:36:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:06,852 INFO L225 Difference]: With dead ends: 69 [2024-11-28 04:36:06,855 INFO L226 Difference]: Without dead ends: 61 [2024-11-28 04:36:06,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 89 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:36:06,856 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 33 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:06,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 107 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:06,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-28 04:36:06,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 41. [2024-11-28 04:36:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:36:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2024-11-28 04:36:06,867 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 48 [2024-11-28 04:36:06,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:06,869 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2024-11-28 04:36:06,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:36:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2024-11-28 04:36:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:36:06,870 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:06,870 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:06,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:36:07,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:36:07,072 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:07,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1139909318, now seen corresponding path program 4 times [2024-11-28 04:36:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448521268] [2024-11-28 04:36:07,074 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:36:07,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:07,110 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:36:07,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:36:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448521268] [2024-11-28 04:36:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448521268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249940078] [2024-11-28 04:36:08,380 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:36:08,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:08,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:08,383 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:08,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:36:08,473 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:36:08,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:08,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-28 04:36:08,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:09,095 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 19 treesize of output 13 [2024-11-28 04:36:09,220 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:09,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 35 [2024-11-28 04:36:09,234 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 29 treesize of output 17 [2024-11-28 04:36:09,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:09,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-28 04:36:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:36:09,549 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:09,790 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 97 treesize of output 93 [2024-11-28 04:36:09,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:09,804 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 1020 treesize of output 972 [2024-11-28 04:36:10,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:10,223 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 51 treesize of output 49 [2024-11-28 04:36:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:36:10,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249940078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:10,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:10,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 15] total 45 [2024-11-28 04:36:10,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475598405] [2024-11-28 04:36:10,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:10,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 04:36:10,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:10,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 04:36:10,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1790, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:36:10,446 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 04:36:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:17,927 INFO L93 Difference]: Finished difference Result 151 states and 183 transitions. [2024-11-28 04:36:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-28 04:36:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 52 [2024-11-28 04:36:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:17,930 INFO L225 Difference]: With dead ends: 151 [2024-11-28 04:36:17,930 INFO L226 Difference]: Without dead ends: 145 [2024-11-28 04:36:17,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5050 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=2335, Invalid=14695, Unknown=0, NotChecked=0, Total=17030 [2024-11-28 04:36:17,941 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 255 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1403 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 1576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:17,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 352 Invalid, 1576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1403 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:36:17,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-28 04:36:17,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 66. [2024-11-28 04:36:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:17,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2024-11-28 04:36:17,964 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 85 transitions. Word has length 52 [2024-11-28 04:36:17,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:17,964 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 85 transitions. [2024-11-28 04:36:17,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 45 states have internal predecessors, (94), 8 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 04:36:17,965 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 85 transitions. [2024-11-28 04:36:17,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:36:17,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:17,966 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:17,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:36:18,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:18,171 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:18,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash -297417058, now seen corresponding path program 5 times [2024-11-28 04:36:18,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:18,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679709063] [2024-11-28 04:36:18,172 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:36:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:18,212 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:36:18,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:18,366 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:36:18,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679709063] [2024-11-28 04:36:18,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679709063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:18,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434432110] [2024-11-28 04:36:18,367 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:36:18,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:18,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:18,370 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:18,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:36:18,491 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 04:36:18,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:18,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:36:18,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:18,623 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:36:18,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:36:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434432110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:18,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:18,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2024-11-28 04:36:18,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946216619] [2024-11-28 04:36:18,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:18,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:36:18,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:18,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:36:18,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:36:18,762 INFO L87 Difference]: Start difference. First operand 66 states and 85 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:36:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:19,002 INFO L93 Difference]: Finished difference Result 128 states and 162 transitions. [2024-11-28 04:36:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:36:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 54 [2024-11-28 04:36:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:19,004 INFO L225 Difference]: With dead ends: 128 [2024-11-28 04:36:19,004 INFO L226 Difference]: Without dead ends: 91 [2024-11-28 04:36:19,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 98 SyntacticMatches, 6 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:36:19,005 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:19,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 125 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:36:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-28 04:36:19,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 72. [2024-11-28 04:36:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 64 states have (on average 1.21875) internal successors, (78), 64 states have internal predecessors, (78), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 90 transitions. [2024-11-28 04:36:19,032 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 90 transitions. Word has length 54 [2024-11-28 04:36:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:19,033 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 90 transitions. [2024-11-28 04:36:19,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 4 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 04:36:19,033 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 90 transitions. [2024-11-28 04:36:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:36:19,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:19,037 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:19,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:19,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:19,238 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:19,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1075015964, now seen corresponding path program 1 times [2024-11-28 04:36:19,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:19,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574546517] [2024-11-28 04:36:19,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:36:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574546517] [2024-11-28 04:36:19,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574546517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636718124] [2024-11-28 04:36:19,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:19,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:19,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:19,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:19,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:36:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:19,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:36:19,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:19,686 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:36:19,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:19,837 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 04:36:19,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636718124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:19,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:19,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 04:36:19,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933555917] [2024-11-28 04:36:19,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:19,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:36:19,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:19,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:36:19,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:36:19,840 INFO L87 Difference]: Start difference. First operand 72 states and 90 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:36:20,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:20,130 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2024-11-28 04:36:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:36:20,131 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 65 [2024-11-28 04:36:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:20,132 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:36:20,132 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:36:20,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 119 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:36:20,133 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 48 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:20,133 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 133 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:36:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:36:20,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 52. [2024-11-28 04:36:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.2) internal successors, (54), 45 states have internal predecessors, (54), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 04:36:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2024-11-28 04:36:20,153 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 65 [2024-11-28 04:36:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:20,154 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2024-11-28 04:36:20,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:36:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2024-11-28 04:36:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:36:20,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:20,156 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:20,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:20,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:20,361 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:20,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:20,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1985613314, now seen corresponding path program 6 times [2024-11-28 04:36:20,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:20,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176593024] [2024-11-28 04:36:20,362 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:36:20,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:20,453 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 04:36:20,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:24,524 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:36:24,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:24,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176593024] [2024-11-28 04:36:24,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176593024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858222943] [2024-11-28 04:36:24,525 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:36:24,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:24,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:24,526 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:24,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:36:24,615 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 04:36:24,615 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:24,617 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 04:36:24,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:25,666 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 19 treesize of output 13 [2024-11-28 04:36:25,798 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 33 treesize of output 30 [2024-11-28 04:36:26,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:26,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-28 04:36:26,046 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 42 treesize of output 29 [2024-11-28 04:36:26,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:26,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-28 04:36:26,606 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:36:26,607 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:27,339 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 207 treesize of output 201 [2024-11-28 04:36:27,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:27,383 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 77130 treesize of output 74570 [2024-11-28 04:36:28,329 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:36:28,329 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 81 treesize of output 99 [2024-11-28 04:36:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:36:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858222943] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:29,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:29,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 22] total 64 [2024-11-28 04:36:29,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400366064] [2024-11-28 04:36:29,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:29,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 04:36:29,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:29,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 04:36:29,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3626, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 04:36:29,079 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand has 64 states, 64 states have (on average 1.953125) internal successors, (125), 64 states have internal predecessors, (125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:37:24,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:24,209 INFO L93 Difference]: Finished difference Result 526 states and 700 transitions. [2024-11-28 04:37:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2024-11-28 04:37:24,210 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 1.953125) internal successors, (125), 64 states have internal predecessors, (125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 67 [2024-11-28 04:37:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:24,214 INFO L225 Difference]: With dead ends: 526 [2024-11-28 04:37:24,214 INFO L226 Difference]: Without dead ends: 517 [2024-11-28 04:37:24,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47466 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=14369, Invalid=105693, Unknown=0, NotChecked=0, Total=120062 [2024-11-28 04:37:24,229 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 987 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 2934 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 2934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:24,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 653 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [440 Valid, 2934 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:37:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2024-11-28 04:37:24,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 106. [2024-11-28 04:37:24,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 93 states have internal predecessors, (117), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:37:24,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 137 transitions. [2024-11-28 04:37:24,288 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 137 transitions. Word has length 67 [2024-11-28 04:37:24,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:24,288 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 137 transitions. [2024-11-28 04:37:24,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 1.953125) internal successors, (125), 64 states have internal predecessors, (125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:37:24,289 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 137 transitions. [2024-11-28 04:37:24,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:37:24,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:24,290 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:24,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:37:24,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:24,491 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:24,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1839145154, now seen corresponding path program 2 times [2024-11-28 04:37:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933024661] [2024-11-28 04:37:24,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:24,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:24,549 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:24,549 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:27,157 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:27,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:27,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933024661] [2024-11-28 04:37:27,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933024661] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:27,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799908196] [2024-11-28 04:37:27,157 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:27,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:27,159 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:27,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:37:27,256 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:27,256 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:27,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:37:27,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:28,038 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 19 treesize of output 13 [2024-11-28 04:37:28,188 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 33 treesize of output 30 [2024-11-28 04:37:28,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:28,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 54 [2024-11-28 04:37:28,337 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 04:37:28,687 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:28,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 17 [2024-11-28 04:37:28,737 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:28,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:29,187 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 207 treesize of output 201 [2024-11-28 04:37:29,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:29,218 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 165654 treesize of output 160534 [2024-11-28 04:37:30,056 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:30,056 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 105 treesize of output 109 [2024-11-28 04:37:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799908196] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:30,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 58 [2024-11-28 04:37:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966691680] [2024-11-28 04:37:30,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:30,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 04:37:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:30,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 04:37:30,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=2963, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 04:37:30,627 INFO L87 Difference]: Start difference. First operand 106 states and 137 transitions. Second operand has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:37:34,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:34,808 INFO L93 Difference]: Finished difference Result 211 states and 267 transitions. [2024-11-28 04:37:34,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:37:34,809 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 67 [2024-11-28 04:37:34,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:34,810 INFO L225 Difference]: With dead ends: 211 [2024-11-28 04:37:34,810 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 04:37:34,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2452 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1063, Invalid=7127, Unknown=0, NotChecked=0, Total=8190 [2024-11-28 04:37:34,813 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 211 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:34,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 447 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:37:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 04:37:34,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 132. [2024-11-28 04:37:34,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 116 states have (on average 1.2758620689655173) internal successors, (148), 116 states have internal predecessors, (148), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:37:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 174 transitions. [2024-11-28 04:37:34,933 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 174 transitions. Word has length 67 [2024-11-28 04:37:34,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:34,934 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 174 transitions. [2024-11-28 04:37:34,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.086206896551724) internal successors, (121), 58 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:37:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 174 transitions. [2024-11-28 04:37:34,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:37:34,936 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:34,936 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:34,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:37:35,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:35,137 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:35,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:35,137 INFO L85 PathProgramCache]: Analyzing trace with hash 259966140, now seen corresponding path program 3 times [2024-11-28 04:37:35,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:35,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672531382] [2024-11-28 04:37:35,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:35,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:35,176 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:35,176 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:37,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672531382] [2024-11-28 04:37:37,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672531382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:37,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078831098] [2024-11-28 04:37:37,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:37:37,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:37,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:37,327 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:37,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:37:37,411 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:37:37,411 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:37,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 04:37:37,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:38,241 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 19 treesize of output 13 [2024-11-28 04:37:38,352 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 33 treesize of output 30 [2024-11-28 04:37:38,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:38,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 55 [2024-11-28 04:37:38,614 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 42 treesize of output 29 [2024-11-28 04:37:39,110 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:39,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 21 [2024-11-28 04:37:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 42 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:37:39,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:39,863 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 87 treesize of output 83 [2024-11-28 04:37:39,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:39,869 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 321 treesize of output 305 [2024-11-28 04:37:40,690 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:40,691 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 81 treesize of output 99 [2024-11-28 04:37:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:41,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078831098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:37:41,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:37:41,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 25] total 70 [2024-11-28 04:37:41,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118315016] [2024-11-28 04:37:41,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:41,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-11-28 04:37:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:37:41,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-11-28 04:37:41,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=4332, Unknown=0, NotChecked=0, Total=4830 [2024-11-28 04:37:41,151 INFO L87 Difference]: Start difference. First operand 132 states and 174 transitions. Second operand has 70 states, 70 states have (on average 1.7142857142857142) internal successors, (120), 70 states have internal predecessors, (120), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:37:54,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:54,412 INFO L93 Difference]: Finished difference Result 470 states and 573 transitions. [2024-11-28 04:37:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2024-11-28 04:37:54,412 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.7142857142857142) internal successors, (120), 70 states have internal predecessors, (120), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 67 [2024-11-28 04:37:54,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:54,414 INFO L225 Difference]: With dead ends: 470 [2024-11-28 04:37:54,414 INFO L226 Difference]: Without dead ends: 429 [2024-11-28 04:37:54,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13932 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=5324, Invalid=35278, Unknown=0, NotChecked=0, Total=40602 [2024-11-28 04:37:54,419 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 661 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:54,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 631 Invalid, 2498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:37:54,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2024-11-28 04:37:54,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 149. [2024-11-28 04:37:54,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.3) internal successors, (169), 130 states have internal predecessors, (169), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:37:54,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 201 transitions. [2024-11-28 04:37:54,482 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 201 transitions. Word has length 67 [2024-11-28 04:37:54,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:54,482 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 201 transitions. [2024-11-28 04:37:54,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.7142857142857142) internal successors, (120), 70 states have internal predecessors, (120), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:37:54,483 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 201 transitions. [2024-11-28 04:37:54,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:37:54,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:54,483 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:54,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:37:54,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:37:54,686 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:37:54,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 406434300, now seen corresponding path program 2 times [2024-11-28 04:37:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:37:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047326433] [2024-11-28 04:37:54,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:37:54,716 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:54,716 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:56,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:37:56,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047326433] [2024-11-28 04:37:56,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047326433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:56,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820653709] [2024-11-28 04:37:56,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:37:56,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:56,871 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:37:56,975 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:37:56,975 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:37:56,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 04:37:56,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:57,718 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 19 treesize of output 13 [2024-11-28 04:37:57,826 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 33 treesize of output 30 [2024-11-28 04:37:57,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:57,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 86 treesize of output 54 [2024-11-28 04:37:57,960 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 04:37:58,256 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:58,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 17 [2024-11-28 04:37:58,293 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:37:58,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:58,674 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 207 treesize of output 201 [2024-11-28 04:37:58,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:58,773 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 5067058 treesize of output 4903218 [2024-11-28 04:37:59,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:37:59,677 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 105 treesize of output 109 [2024-11-28 04:38:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:38:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820653709] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:00,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:00,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 21] total 61 [2024-11-28 04:38:00,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994179384] [2024-11-28 04:38:00,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:00,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-28 04:38:00,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:00,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-28 04:38:00,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=3279, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:38:00,090 INFO L87 Difference]: Start difference. First operand 149 states and 201 transitions. Second operand has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:38:06,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:06,669 INFO L93 Difference]: Finished difference Result 277 states and 354 transitions. [2024-11-28 04:38:06,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-28 04:38:06,670 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 67 [2024-11-28 04:38:06,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:06,671 INFO L225 Difference]: With dead ends: 277 [2024-11-28 04:38:06,671 INFO L226 Difference]: Without dead ends: 234 [2024-11-28 04:38:06,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4187 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1743, Invalid=12299, Unknown=0, NotChecked=0, Total=14042 [2024-11-28 04:38:06,675 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 185 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 2659 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:06,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 618 Invalid, 2779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2659 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:38:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-28 04:38:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 160. [2024-11-28 04:38:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 140 states have (on average 1.3071428571428572) internal successors, (183), 140 states have internal predecessors, (183), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:38:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 217 transitions. [2024-11-28 04:38:06,751 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 217 transitions. Word has length 67 [2024-11-28 04:38:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:06,751 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 217 transitions. [2024-11-28 04:38:06,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.9836065573770492) internal successors, (121), 61 states have internal predecessors, (121), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:38:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 217 transitions. [2024-11-28 04:38:06,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:38:06,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:06,753 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:06,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:38:06,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:38:06,957 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:06,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1404151776, now seen corresponding path program 4 times [2024-11-28 04:38:06,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:06,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146978048] [2024-11-28 04:38:06,958 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:38:06,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:06,970 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:38:06,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:38:07,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146978048] [2024-11-28 04:38:07,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146978048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:07,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571595716] [2024-11-28 04:38:07,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:38:07,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:07,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:07,080 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:07,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:38:07,163 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:38:07,163 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:07,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:38:07,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:38:07,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 04:38:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571595716] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:07,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 04:38:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869211524] [2024-11-28 04:38:07,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:07,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:38:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:07,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:38:07,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:38:07,359 INFO L87 Difference]: Start difference. First operand 160 states and 217 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:38:07,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:07,771 INFO L93 Difference]: Finished difference Result 258 states and 339 transitions. [2024-11-28 04:38:07,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:38:07,773 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 69 [2024-11-28 04:38:07,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:07,774 INFO L225 Difference]: With dead ends: 258 [2024-11-28 04:38:07,774 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 04:38:07,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:38:07,775 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 51 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:07,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 144 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:07,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 04:38:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 152. [2024-11-28 04:38:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 134 states have (on average 1.2686567164179106) internal successors, (170), 134 states have internal predecessors, (170), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 04:38:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2024-11-28 04:38:07,845 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 69 [2024-11-28 04:38:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:07,846 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2024-11-28 04:38:07,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:38:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2024-11-28 04:38:07,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:38:07,847 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:07,847 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:07,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:38:08,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:08,048 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:08,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1873316610, now seen corresponding path program 5 times [2024-11-28 04:38:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449759706] [2024-11-28 04:38:08,048 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:08,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:08,077 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:38:08,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 31 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 04:38:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449759706] [2024-11-28 04:38:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449759706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:08,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496230181] [2024-11-28 04:38:08,216 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:38:08,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:08,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:08,218 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:08,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:38:08,362 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:38:08,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:08,363 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:38:08,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:08,496 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 31 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 04:38:08,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 24 proven. 31 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 04:38:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496230181] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:08,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:08,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 15 [2024-11-28 04:38:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121428832] [2024-11-28 04:38:08,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:08,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:38:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:08,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:38:08,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:38:08,644 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:38:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:09,063 INFO L93 Difference]: Finished difference Result 158 states and 205 transitions. [2024-11-28 04:38:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:38:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 78 [2024-11-28 04:38:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:09,065 INFO L225 Difference]: With dead ends: 158 [2024-11-28 04:38:09,065 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 04:38:09,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:38:09,065 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 60 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:09,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 161 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:09,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 04:38:09,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 83. [2024-11-28 04:38:09,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.2222222222222223) internal successors, (88), 72 states have internal predecessors, (88), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:38:09,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 104 transitions. [2024-11-28 04:38:09,139 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 104 transitions. Word has length 78 [2024-11-28 04:38:09,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:09,139 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 104 transitions. [2024-11-28 04:38:09,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 15 states have internal predecessors, (55), 5 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:38:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 104 transitions. [2024-11-28 04:38:09,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:38:09,140 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:09,140 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:09,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:09,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:09,344 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:09,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:09,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1626575670, now seen corresponding path program 7 times [2024-11-28 04:38:09,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:09,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294145579] [2024-11-28 04:38:09,345 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:38:09,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 1 proven. 77 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:38:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:11,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294145579] [2024-11-28 04:38:11,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294145579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:11,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423024680] [2024-11-28 04:38:11,989 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:38:11,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:11,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:11,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:11,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:38:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:12,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:38:12,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:13,307 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 19 treesize of output 13 [2024-11-28 04:38:13,444 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 33 treesize of output 30 [2024-11-28 04:38:13,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:13,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:38:13,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:13,785 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 131 treesize of output 75 [2024-11-28 04:38:13,795 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 55 treesize of output 41 [2024-11-28 04:38:14,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:14,283 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 71 treesize of output 27 [2024-11-28 04:38:14,370 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:14,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:15,138 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 359 treesize of output 351 [2024-11-28 04:38:15,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:15,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11707027566 treesize of output 11472146542 [2024-11-28 04:38:20,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:20,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 167 [2024-11-28 04:38:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 27 proven. 51 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:38:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423024680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:21,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 25] total 73 [2024-11-28 04:38:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320827611] [2024-11-28 04:38:21,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:21,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 04:38:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:21,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 04:38:21,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=4821, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 04:38:21,926 INFO L87 Difference]: Start difference. First operand 83 states and 104 transitions. Second operand has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 73 states have internal predecessors, (157), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:38:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:45,633 INFO L93 Difference]: Finished difference Result 358 states and 431 transitions. [2024-11-28 04:38:45,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2024-11-28 04:38:45,634 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 73 states have internal predecessors, (157), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 82 [2024-11-28 04:38:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:45,636 INFO L225 Difference]: With dead ends: 358 [2024-11-28 04:38:45,636 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 04:38:45,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 119 SyntacticMatches, 4 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12715 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=4129, Invalid=34483, Unknown=0, NotChecked=0, Total=38612 [2024-11-28 04:38:45,640 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 517 mSDsluCounter, 873 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:45,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 907 Invalid, 3143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 04:38:45,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 04:38:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 177. [2024-11-28 04:38:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 155 states have (on average 1.264516129032258) internal successors, (196), 155 states have internal predecessors, (196), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:38:45,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2024-11-28 04:38:45,785 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 82 [2024-11-28 04:38:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:45,785 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2024-11-28 04:38:45,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1506849315068495) internal successors, (157), 73 states have internal predecessors, (157), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:38:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2024-11-28 04:38:45,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:38:45,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:45,786 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:45,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:38:45,987 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:45,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:45,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1564536056, now seen corresponding path program 6 times [2024-11-28 04:38:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680955207] [2024-11-28 04:38:45,988 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:38:45,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:46,034 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:38:46,034 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:38:49,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680955207] [2024-11-28 04:38:49,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680955207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:49,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910618317] [2024-11-28 04:38:49,518 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:38:49,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:49,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:49,520 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:49,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:38:49,633 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 04:38:49,633 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:49,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:38:49,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:51,622 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 19 treesize of output 13 [2024-11-28 04:38:51,818 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 33 treesize of output 30 [2024-11-28 04:38:52,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:52,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:38:52,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:52,244 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 135 treesize of output 79 [2024-11-28 04:38:52,264 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 49 treesize of output 35 [2024-11-28 04:38:53,619 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:53,619 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 65 treesize of output 25 [2024-11-28 04:38:53,718 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 36 proven. 78 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:53,718 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:55,549 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 236 treesize of output 228 [2024-11-28 04:38:55,651 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-28 04:38:55,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6177366 treesize of output 5800534 [2024-11-28 04:38:58,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:58,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 173 [2024-11-28 04:39:00,747 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 65 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:39:00,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910618317] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:00,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:00,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 27] total 82 [2024-11-28 04:39:00,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9501220] [2024-11-28 04:39:00,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:00,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-28 04:39:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:00,749 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-28 04:39:00,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=552, Invalid=6090, Unknown=0, NotChecked=0, Total=6642 [2024-11-28 04:39:00,750 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 82 states, 82 states have (on average 1.9268292682926829) internal successors, (158), 82 states have internal predecessors, (158), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:39:52,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:52,850 INFO L93 Difference]: Finished difference Result 662 states and 815 transitions. [2024-11-28 04:39:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2024-11-28 04:39:52,851 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 1.9268292682926829) internal successors, (158), 82 states have internal predecessors, (158), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 82 [2024-11-28 04:39:52,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:52,853 INFO L225 Difference]: With dead ends: 662 [2024-11-28 04:39:52,853 INFO L226 Difference]: Without dead ends: 628 [2024-11-28 04:39:52,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 110 SyntacticMatches, 5 SemanticMatches, 372 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55066 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=11968, Invalid=127534, Unknown=0, NotChecked=0, Total=139502 [2024-11-28 04:39:52,861 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 980 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 4172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:52,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 872 Invalid, 4172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3690 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-28 04:39:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-28 04:39:53,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 220. [2024-11-28 04:39:53,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 194 states have (on average 1.2835051546391754) internal successors, (249), 194 states have internal predecessors, (249), 21 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 04:39:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 291 transitions. [2024-11-28 04:39:53,010 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 291 transitions. Word has length 82 [2024-11-28 04:39:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:53,011 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 291 transitions. [2024-11-28 04:39:53,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 1.9268292682926829) internal successors, (158), 82 states have internal predecessors, (158), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:39:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 291 transitions. [2024-11-28 04:39:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:39:53,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:53,012 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:53,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:39:53,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:39:53,213 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:53,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash -967044148, now seen corresponding path program 7 times [2024-11-28 04:39:53,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:53,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884960465] [2024-11-28 04:39:53,213 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:53,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:56,337 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:39:56,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884960465] [2024-11-28 04:39:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884960465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:56,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321293393] [2024-11-28 04:39:56,338 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:39:56,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:56,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:56,340 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:56,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:39:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:56,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:39:56,442 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:58,264 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 19 treesize of output 13 [2024-11-28 04:39:58,464 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 33 treesize of output 30 [2024-11-28 04:39:58,698 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:58,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:39:58,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:58,925 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 131 treesize of output 75 [2024-11-28 04:39:58,937 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 55 treesize of output 45 [2024-11-28 04:39:59,741 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:39:59,741 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 71 treesize of output 27 [2024-11-28 04:39:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 32 proven. 78 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:39:59,828 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:00,814 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 359 treesize of output 351 [2024-11-28 04:40:01,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:01,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2862455538 treesize of output 2803735282 [2024-11-28 04:40:03,726 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:03,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 167 [2024-11-28 04:40:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 65 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:40:05,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321293393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:05,581 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:05,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26, 25] total 72 [2024-11-28 04:40:05,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775060112] [2024-11-28 04:40:05,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:05,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-11-28 04:40:05,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:05,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-11-28 04:40:05,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=4693, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 04:40:05,583 INFO L87 Difference]: Start difference. First operand 220 states and 291 transitions. Second operand has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:40:26,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:26,986 INFO L93 Difference]: Finished difference Result 501 states and 624 transitions. [2024-11-28 04:40:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-28 04:40:26,987 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 82 [2024-11-28 04:40:26,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:26,989 INFO L225 Difference]: With dead ends: 501 [2024-11-28 04:40:26,989 INFO L226 Difference]: Without dead ends: 495 [2024-11-28 04:40:26,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 120 SyntacticMatches, 4 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=3363, Invalid=28857, Unknown=0, NotChecked=0, Total=32220 [2024-11-28 04:40:26,992 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 588 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 3519 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 3786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 3519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:26,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [589 Valid, 763 Invalid, 3786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 3519 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 04:40:26,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2024-11-28 04:40:27,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 226. [2024-11-28 04:40:27,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 199 states have (on average 1.2864321608040201) internal successors, (256), 199 states have internal predecessors, (256), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:40:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 300 transitions. [2024-11-28 04:40:27,253 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 300 transitions. Word has length 82 [2024-11-28 04:40:27,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:27,253 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 300 transitions. [2024-11-28 04:40:27,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.138888888888889) internal successors, (154), 72 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:40:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 300 transitions. [2024-11-28 04:40:27,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:40:27,255 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:27,255 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:27,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:40:27,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:27,460 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:27,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:27,461 INFO L85 PathProgramCache]: Analyzing trace with hash 312586376, now seen corresponding path program 8 times [2024-11-28 04:40:27,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119849617] [2024-11-28 04:40:27,461 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:27,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:27,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:27,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:40:31,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:31,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119849617] [2024-11-28 04:40:31,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119849617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302651546] [2024-11-28 04:40:31,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:40:31,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:31,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:31,069 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:31,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:40:31,170 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:40:31,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:31,172 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:40:31,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:33,017 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 19 treesize of output 13 [2024-11-28 04:40:33,196 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 33 treesize of output 30 [2024-11-28 04:40:33,409 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:33,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:40:33,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:33,654 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 131 treesize of output 75 [2024-11-28 04:40:33,666 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 55 treesize of output 41 [2024-11-28 04:40:34,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:34,554 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 71 treesize of output 27 [2024-11-28 04:40:34,623 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 20 proven. 78 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:40:34,623 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:35,475 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 359 treesize of output 351 [2024-11-28 04:40:35,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:35,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23015154130 treesize of output 22545392082 [2024-11-28 04:40:39,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:40:39,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 111 treesize of output 167 [2024-11-28 04:40:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 65 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:40:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302651546] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:40:40,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:40:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 25] total 73 [2024-11-28 04:40:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381226384] [2024-11-28 04:40:40,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:40,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 04:40:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:40:40,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 04:40:40,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=4789, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 04:40:40,628 INFO L87 Difference]: Start difference. First operand 226 states and 300 transitions. Second operand has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:40:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:55,901 INFO L93 Difference]: Finished difference Result 466 states and 579 transitions. [2024-11-28 04:40:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-28 04:40:55,902 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 82 [2024-11-28 04:40:55,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:55,904 INFO L225 Difference]: With dead ends: 466 [2024-11-28 04:40:55,904 INFO L226 Difference]: Without dead ends: 458 [2024-11-28 04:40:55,906 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6916 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=2221, Invalid=19831, Unknown=0, NotChecked=0, Total=22052 [2024-11-28 04:40:55,906 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 511 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 3004 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 3004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:55,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 745 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 3004 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-28 04:40:55,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-28 04:40:56,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 270. [2024-11-28 04:40:56,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 238 states have (on average 1.2983193277310925) internal successors, (309), 238 states have internal predecessors, (309), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:40:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 361 transitions. [2024-11-28 04:40:56,171 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 361 transitions. Word has length 82 [2024-11-28 04:40:56,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:56,171 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 361 transitions. [2024-11-28 04:40:56,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.1095890410958904) internal successors, (154), 73 states have internal predecessors, (154), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:40:56,171 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 361 transitions. [2024-11-28 04:40:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 04:40:56,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:56,173 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:56,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:40:56,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:56,374 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:40:56,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:56,374 INFO L85 PathProgramCache]: Analyzing trace with hash 972117898, now seen corresponding path program 9 times [2024-11-28 04:40:56,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:40:56,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108157458] [2024-11-28 04:40:56,375 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:40:56,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:40:56,408 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:40:56,408 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:40:59,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:40:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108157458] [2024-11-28 04:40:59,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108157458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:59,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361848341] [2024-11-28 04:40:59,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:40:59,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:59,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:59,528 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:59,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:40:59,638 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:40:59,638 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:40:59,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 04:40:59,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:41:04,167 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_55| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_44| Int) (|v_ULTIMATE.start_main_~i~0#1_BEFORE_CALL_84| Int)) (let ((.cse0 (select |c_#memory_int#2| |v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_44|)) (.cse1 (* |v_ULTIMATE.start_main_~i~0#1_BEFORE_CALL_84| 4))) (<= (select .cse0 (+ |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_55| .cse1 (- 8))) (select .cse0 (+ |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_55| (- 4) .cse1))))) is different from true [2024-11-28 04:41:08,923 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_56| Int) (|v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_45| Int) (|v_ULTIMATE.start_main_~i~0#1_BEFORE_CALL_85| Int)) (let ((.cse1 (select |c_#memory_int#2| |v_ULTIMATE.start_main_~#a~0#1.base_BEFORE_CALL_45|)) (.cse2 (* |v_ULTIMATE.start_main_~i~0#1_BEFORE_CALL_85| 4))) (let ((.cse0 (select .cse1 (+ |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_56| .cse2 (- 12))))) (and (<= .cse0 (select .cse1 (+ |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_56| .cse2 (- 4)))) (<= .cse0 (select .cse1 (+ |v_ULTIMATE.start_main_~#a~0#1.offset_BEFORE_CALL_56| .cse2 (- 8)))))))) is different from true [2024-11-28 04:41:10,012 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 19 treesize of output 13 [2024-11-28 04:41:10,261 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 37 treesize of output 34 [2024-11-28 04:41:10,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:41:10,526 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 54 treesize of output 54 [2024-11-28 04:41:11,345 INFO L349 Elim1Store]: treesize reduction 48, result has 62.8 percent of original size [2024-11-28 04:41:11,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 174 treesize of output 157 [2024-11-28 04:41:11,374 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 162 treesize of output 134 [2024-11-28 04:41:13,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:41:13,110 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 81 treesize of output 23 [2024-11-28 04:41:13,346 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 51 proven. 59 refuted. 0 times theorem prover too weak. 24 trivial. 4 not checked. [2024-11-28 04:41:13,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:15,305 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 155 treesize of output 149 [2024-11-28 04:41:15,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:41:15,324 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 12602 treesize of output 11962 [2024-11-28 04:41:18,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:41:18,060 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 74 treesize of output 22 [2024-11-28 04:41:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:41:18,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361848341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:18,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:18,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 31] total 88 [2024-11-28 04:41:18,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891112124] [2024-11-28 04:41:18,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:18,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-28 04:41:18,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:18,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-28 04:41:18,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=748, Invalid=6568, Unknown=2, NotChecked=338, Total=7656 [2024-11-28 04:41:18,235 INFO L87 Difference]: Start difference. First operand 270 states and 361 transitions. Second operand has 88 states, 88 states have (on average 1.7386363636363635) internal successors, (153), 88 states have internal predecessors, (153), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-28 04:42:03,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:03,699 INFO L93 Difference]: Finished difference Result 819 states and 1066 transitions. [2024-11-28 04:42:03,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2024-11-28 04:42:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.7386363636363635) internal successors, (153), 88 states have internal predecessors, (153), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) Word has length 82 [2024-11-28 04:42:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:03,703 INFO L225 Difference]: With dead ends: 819 [2024-11-28 04:42:03,703 INFO L226 Difference]: Without dead ends: 789 [2024-11-28 04:42:03,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 212 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 13545 ImplicationChecksByTransitivity, 51.2s TimeCoverageRelationStatistics Valid=4849, Invalid=39889, Unknown=2, NotChecked=842, Total=45582 [2024-11-28 04:42:03,709 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 558 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 5259 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 6869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 5259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1220 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:03,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 899 Invalid, 6869 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [390 Valid, 5259 Invalid, 0 Unknown, 1220 Unchecked, 10.6s Time] [2024-11-28 04:42:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2024-11-28 04:42:04,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 457. [2024-11-28 04:42:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 397 states have (on average 1.3249370277078085) internal successors, (526), 397 states have internal predecessors, (526), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 04:42:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 614 transitions. [2024-11-28 04:42:04,272 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 614 transitions. Word has length 82 [2024-11-28 04:42:04,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:04,273 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 614 transitions. [2024-11-28 04:42:04,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.7386363636363635) internal successors, (153), 88 states have internal predecessors, (153), 12 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-28 04:42:04,273 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 614 transitions. [2024-11-28 04:42:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:42:04,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:04,275 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:04,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:04,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:42:04,476 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:04,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash -645191764, now seen corresponding path program 10 times [2024-11-28 04:42:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:04,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550028706] [2024-11-28 04:42:04,477 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:42:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:04,490 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:42:04,490 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:04,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550028706] [2024-11-28 04:42:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550028706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:04,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356701765] [2024-11-28 04:42:04,855 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:42:04,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:04,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:04,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:04,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:42:04,988 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:42:04,988 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:04,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:42:04,992 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:05,335 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:05,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:05,711 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:05,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356701765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:05,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:05,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 04:42:05,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812417642] [2024-11-28 04:42:05,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:05,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:42:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:05,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:42:05,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:42:05,714 INFO L87 Difference]: Start difference. First operand 457 states and 614 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:42:07,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:07,599 INFO L93 Difference]: Finished difference Result 613 states and 801 transitions. [2024-11-28 04:42:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:42:07,600 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2024-11-28 04:42:07,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:07,602 INFO L225 Difference]: With dead ends: 613 [2024-11-28 04:42:07,603 INFO L226 Difference]: Without dead ends: 597 [2024-11-28 04:42:07,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 157 SyntacticMatches, 10 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:42:07,605 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 78 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:07,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 248 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:42:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-28 04:42:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 317. [2024-11-28 04:42:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 270 states have (on average 1.3222222222222222) internal successors, (357), 274 states have internal predecessors, (357), 33 states have call successors, (33), 13 states have call predecessors, (33), 13 states have return successors, (33), 29 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:42:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 423 transitions. [2024-11-28 04:42:07,854 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 423 transitions. Word has length 84 [2024-11-28 04:42:07,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:07,854 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 423 transitions. [2024-11-28 04:42:07,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 states have internal predecessors, (56), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:42:07,855 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 423 transitions. [2024-11-28 04:42:07,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 04:42:07,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:07,856 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:07,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:42:08,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 04:42:08,057 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:08,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:08,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1677713232, now seen corresponding path program 11 times [2024-11-28 04:42:08,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:08,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044511966] [2024-11-28 04:42:08,057 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:42:08,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:08,092 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:42:08,092 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:08,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:08,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044511966] [2024-11-28 04:42:08,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044511966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:08,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834891184] [2024-11-28 04:42:08,405 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:42:08,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:08,407 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:08,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:42:08,550 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 04:42:08,551 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:08,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:42:08,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:08,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:09,188 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 04:42:09,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834891184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:09,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:09,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 04:42:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973454417] [2024-11-28 04:42:09,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:09,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:42:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:09,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:42:09,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:42:09,192 INFO L87 Difference]: Start difference. First operand 317 states and 423 transitions. Second operand has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:42:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:09,970 INFO L93 Difference]: Finished difference Result 445 states and 591 transitions. [2024-11-28 04:42:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:42:09,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 84 [2024-11-28 04:42:09,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:09,975 INFO L225 Difference]: With dead ends: 445 [2024-11-28 04:42:09,975 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 04:42:09,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 153 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:42:09,976 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 86 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:09,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 131 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:42:09,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 04:42:10,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 321. [2024-11-28 04:42:10,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 273 states have (on average 1.2857142857142858) internal successors, (351), 278 states have internal predecessors, (351), 34 states have call successors, (34), 13 states have call predecessors, (34), 13 states have return successors, (34), 29 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 04:42:10,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 419 transitions. [2024-11-28 04:42:10,247 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 419 transitions. Word has length 84 [2024-11-28 04:42:10,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:10,247 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 419 transitions. [2024-11-28 04:42:10,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.7777777777777777) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:42:10,248 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 419 transitions. [2024-11-28 04:42:10,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:42:10,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:10,249 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:10,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:10,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 04:42:10,450 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:10,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1175172978, now seen corresponding path program 8 times [2024-11-28 04:42:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:10,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940905456] [2024-11-28 04:42:10,451 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:10,484 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:10,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:15,485 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:42:15,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:15,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940905456] [2024-11-28 04:42:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940905456] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2191403] [2024-11-28 04:42:15,486 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:15,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:15,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:15,487 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:15,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:42:15,608 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:42:15,608 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:15,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-28 04:42:15,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:19,211 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 19 treesize of output 13 [2024-11-28 04:42:19,513 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 33 treesize of output 30 [2024-11-28 04:42:19,882 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:19,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:42:20,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:20,241 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 59 treesize of output 62 [2024-11-28 04:42:20,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:20,607 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 115 treesize of output 106 [2024-11-28 04:42:20,618 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:20,618 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 145 treesize of output 81 [2024-11-28 04:42:22,106 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:22,106 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 89 treesize of output 33 [2024-11-28 04:42:22,236 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 60 proven. 125 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:42:22,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:24,205 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 553 treesize of output 543 [2024-11-28 04:42:32,796 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:42:33,030 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 1010525669667293618 treesize of output 997864793273452978 [2024-11-28 04:43:27,829 WARN L286 SmtUtils]: Spent 54.32s on a formula simplification. DAG size of input: 177140 DAG size of output: 104 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 04:43:39,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:43:39,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 141 treesize of output 253 [2024-11-28 04:43:49,239 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 50 proven. 75 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:43:49,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2191403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:49,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:49,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 30] total 89 [2024-11-28 04:43:49,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262247445] [2024-11-28 04:43:49,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:49,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-28 04:43:49,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:49,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-28 04:43:49,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=589, Invalid=7243, Unknown=0, NotChecked=0, Total=7832 [2024-11-28 04:43:49,243 INFO L87 Difference]: Start difference. First operand 321 states and 419 transitions. Second operand has 89 states, 89 states have (on average 2.134831460674157) internal successors, (190), 89 states have internal predecessors, (190), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:45:20,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:20,066 INFO L93 Difference]: Finished difference Result 613 states and 757 transitions. [2024-11-28 04:45:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-28 04:45:20,067 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.134831460674157) internal successors, (190), 89 states have internal predecessors, (190), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 97 [2024-11-28 04:45:20,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:20,070 INFO L225 Difference]: With dead ends: 613 [2024-11-28 04:45:20,070 INFO L226 Difference]: Without dead ends: 607 [2024-11-28 04:45:20,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 137 SyntacticMatches, 5 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12636 ImplicationChecksByTransitivity, 81.0s TimeCoverageRelationStatistics Valid=4008, Invalid=37812, Unknown=0, NotChecked=0, Total=41820 [2024-11-28 04:45:20,075 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 802 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 4088 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 4428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 4088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:20,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1090 Invalid, 4428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 4088 Invalid, 0 Unknown, 0 Unchecked, 26.2s Time] [2024-11-28 04:45:20,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2024-11-28 04:45:20,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 394. [2024-11-28 04:45:20,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 339 states have (on average 1.2861356932153392) internal successors, (436), 344 states have internal predecessors, (436), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 35 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 04:45:20,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 516 transitions. [2024-11-28 04:45:20,472 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 516 transitions. Word has length 97 [2024-11-28 04:45:20,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:20,472 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 516 transitions. [2024-11-28 04:45:20,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.134831460674157) internal successors, (190), 89 states have internal predecessors, (190), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:45:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 516 transitions. [2024-11-28 04:45:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:45:20,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:20,475 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:20,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:20,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:45:20,676 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:20,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1152540724, now seen corresponding path program 12 times [2024-11-28 04:45:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153579006] [2024-11-28 04:45:20,676 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:20,728 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:45:20,728 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:45:33,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153579006] [2024-11-28 04:45:33,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153579006] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:33,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577373246] [2024-11-28 04:45:33,595 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:45:33,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:33,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:33,597 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:33,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:45:33,761 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 04:45:33,761 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:33,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 04:45:33,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:45,127 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 19 treesize of output 13 [2024-11-28 04:45:45,973 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 33 treesize of output 30 [2024-11-28 04:45:46,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:46,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:45:47,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:47,918 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 59 treesize of output 62 [2024-11-28 04:45:49,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:49,561 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 154 treesize of output 90 [2024-11-28 04:45:49,625 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 62 treesize of output 47 [2024-11-28 04:45:55,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:45:55,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 86 treesize of output 72 [2024-11-28 04:45:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 60 proven. 125 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:45:58,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:06,851 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 328 treesize of output 320 [2024-11-28 04:46:07,043 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:07,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7447286 treesize of output 7267062 [2024-11-28 04:46:18,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:46:18,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 167 treesize of output 260 [2024-11-28 04:46:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 29 proven. 96 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:46:32,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577373246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:32,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:32,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 35] total 99 [2024-11-28 04:46:32,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72444873] [2024-11-28 04:46:32,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:32,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2024-11-28 04:46:32,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:32,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2024-11-28 04:46:32,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=887, Invalid=8815, Unknown=0, NotChecked=0, Total=9702 [2024-11-28 04:46:32,271 INFO L87 Difference]: Start difference. First operand 394 states and 516 transitions. Second operand has 99 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 99 states have internal predecessors, (180), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:48:13,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:48:13,055 INFO L93 Difference]: Finished difference Result 645 states and 800 transitions. [2024-11-28 04:48:13,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 167 states. [2024-11-28 04:48:13,056 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 99 states have internal predecessors, (180), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 97 [2024-11-28 04:48:13,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:48:13,058 INFO L225 Difference]: With dead ends: 645 [2024-11-28 04:48:13,059 INFO L226 Difference]: Without dead ends: 611 [2024-11-28 04:48:13,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 129 SyntacticMatches, 5 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22470 ImplicationChecksByTransitivity, 115.4s TimeCoverageRelationStatistics Valid=7098, Invalid=57672, Unknown=0, NotChecked=0, Total=64770 [2024-11-28 04:48:13,066 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 680 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 4409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:48:13,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1455 Invalid, 4409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2024-11-28 04:48:13,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2024-11-28 04:48:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 406. [2024-11-28 04:48:13,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 350 states have (on average 1.2857142857142858) internal successors, (450), 356 states have internal predecessors, (450), 41 states have call successors, (41), 14 states have call predecessors, (41), 14 states have return successors, (41), 35 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:48:13,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 532 transitions. [2024-11-28 04:48:13,492 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 532 transitions. Word has length 97 [2024-11-28 04:48:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:48:13,492 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 532 transitions. [2024-11-28 04:48:13,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 1.8181818181818181) internal successors, (180), 99 states have internal predecessors, (180), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:48:13,493 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 532 transitions. [2024-11-28 04:48:13,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:48:13,494 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:48:13,495 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:48:13,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:48:13,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:48:13,699 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:48:13,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:48:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash -751526256, now seen corresponding path program 13 times [2024-11-28 04:48:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:48:13,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092274161] [2024-11-28 04:48:13,700 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:48:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:48:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:23,611 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 125 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-28 04:48:23,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092274161] [2024-11-28 04:48:23,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092274161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:23,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045198493] [2024-11-28 04:48:23,612 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:48:23,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:23,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:23,614 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:23,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74f282be-ca6d-41bd-a773-3c4ec53ce95f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:48:23,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:23,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 04:48:23,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:34,720 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 19 treesize of output 13 [2024-11-28 04:48:35,530 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 33 treesize of output 30 [2024-11-28 04:48:36,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:48:36,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 46 [2024-11-28 04:48:37,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:48:37,138 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 59 treesize of output 62 [2024-11-28 04:48:38,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:48:38,013 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 167 treesize of output 95 [2024-11-28 04:48:38,067 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 68 treesize of output 57 [2024-11-28 04:48:42,058 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:48:42,058 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 89 treesize of output 33 [2024-11-28 04:48:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 56 proven. 125 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:48:42,467 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:48:47,544 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 553 treesize of output 543 [2024-11-28 04:48:50,775 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:48:50,935 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 219208275013394422 treesize of output 216675000222998518