./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/zero_sum4.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_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/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_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/zero_sum4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/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_8fc2f482-025e-4d03-9797-faf9c5b23c31/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 ca2dcd06e0389cf665904adfee9ccd6a1a268c87541d3b3b3e0bcffb3a75664e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:42:27,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:42:28,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:42:28,025 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:42:28,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:42:28,067 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:42:28,068 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:42:28,069 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:42:28,069 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:42:28,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:42:28,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:42:28,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:42:28,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:42:28,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:42:28,072 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:42:28,072 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:42:28,072 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:42:28,072 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:42:28,072 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:42:28,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:42:28,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:42:28,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:42:28,073 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:42:28,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:42:28,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:42:28,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:42:28,074 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:42:28,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:42:28,075 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:28,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:42:28,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:42:28,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:42:28,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:28,077 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:42:28,077 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:42:28,078 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:42:28,078 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:42:28,078 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:42:28,078 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_8fc2f482-025e-4d03-9797-faf9c5b23c31/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 -> ca2dcd06e0389cf665904adfee9ccd6a1a268c87541d3b3b3e0bcffb3a75664e [2024-11-28 03:42:28,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:42:28,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:42:28,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:42:28,406 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:42:28,407 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:42:28,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-crafted/zero_sum4.c [2024-11-28 03:42:31,377 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/data/212bd9893/571b15c06d244f87882df5ad66c998f3/FLAG60f4e34cd [2024-11-28 03:42:31,702 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:42:31,703 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/sv-benchmarks/c/array-crafted/zero_sum4.c [2024-11-28 03:42:31,735 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/data/212bd9893/571b15c06d244f87882df5ad66c998f3/FLAG60f4e34cd [2024-11-28 03:42:31,763 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/data/212bd9893/571b15c06d244f87882df5ad66c998f3 [2024-11-28 03:42:31,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:42:31,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:42:31,773 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:31,774 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:42:31,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:42:31,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:31" (1/1) ... [2024-11-28 03:42:31,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@508b877f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:31, skipping insertion in model container [2024-11-28 03:42:31,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:42:31" (1/1) ... [2024-11-28 03:42:31,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:42:31,979 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_8fc2f482-025e-4d03-9797-faf9c5b23c31/sv-benchmarks/c/array-crafted/zero_sum4.c[400,413] [2024-11-28 03:42:32,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:32,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:42:32,040 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_8fc2f482-025e-4d03-9797-faf9c5b23c31/sv-benchmarks/c/array-crafted/zero_sum4.c[400,413] [2024-11-28 03:42:32,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:42:32,084 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:42:32,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32 WrapperNode [2024-11-28 03:42:32,085 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:42:32,086 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:32,086 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:42:32,086 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:42:32,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,129 INFO L138 Inliner]: procedures = 15, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 121 [2024-11-28 03:42:32,130 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:42:32,130 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:42:32,130 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:42:32,130 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:42:32,139 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,141 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,153 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 03:42:32,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,153 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,159 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,160 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,166 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:42:32,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:42:32,180 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:42:32,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:42:32,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (1/1) ... [2024-11-28 03:42:32,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:42:32,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:32,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:42:32,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:42:32,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:42:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:42:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:42:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:42:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:42:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:42:32,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:42:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:42:32,321 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:42:32,322 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:42:32,497 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 03:42:32,497 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:42:32,507 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:42:32,508 INFO L312 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-28 03:42:32,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:42:32 BoogieIcfgContainer [2024-11-28 03:42:32,508 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:42:32,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:42:32,511 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:42:32,517 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:42:32,517 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:42:31" (1/3) ... [2024-11-28 03:42:32,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6665bce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:42:32, skipping insertion in model container [2024-11-28 03:42:32,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:42:32" (2/3) ... [2024-11-28 03:42:32,518 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6665bce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:42:32, skipping insertion in model container [2024-11-28 03:42:32,518 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:42:32" (3/3) ... [2024-11-28 03:42:32,519 INFO L128 eAbstractionObserver]: Analyzing ICFG zero_sum4.c [2024-11-28 03:42:32,536 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:42:32,537 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zero_sum4.c that has 1 procedures, 38 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-28 03:42:32,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:42:32,610 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;@46b9dab3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:42:32,610 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:42:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:32,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:42:32,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:32,622 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:32,622 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:32,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -342530002, now seen corresponding path program 1 times [2024-11-28 03:42:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819906545] [2024-11-28 03:42:32,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:32,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:32,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819906545] [2024-11-28 03:42:32,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819906545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:32,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:32,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:42:32,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545784649] [2024-11-28 03:42:32,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:32,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:42:32,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:32,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:42:32,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:42:32,859 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:32,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:32,874 INFO L93 Difference]: Finished difference Result 71 states and 106 transitions. [2024-11-28 03:42:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:42:32,876 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 03:42:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:32,883 INFO L225 Difference]: With dead ends: 71 [2024-11-28 03:42:32,883 INFO L226 Difference]: Without dead ends: 33 [2024-11-28 03:42:32,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:42:32,889 INFO L435 NwaCegarLoop]: 47 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, 47 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:32,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:42:32,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-28 03:42:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-28 03:42:32,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-28 03:42:32,917 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 23 [2024-11-28 03:42:32,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:32,918 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-28 03:42:32,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:32,918 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-28 03:42:32,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:42:32,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:32,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:32,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:42:32,919 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:32,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:32,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1178131130, now seen corresponding path program 1 times [2024-11-28 03:42:32,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:32,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65959183] [2024-11-28 03:42:32,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:32,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:33,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:33,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:33,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65959183] [2024-11-28 03:42:33,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65959183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:33,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:33,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:42:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626736668] [2024-11-28 03:42:33,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:33,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:42:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:33,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:42:33,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:33,153 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:33,241 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2024-11-28 03:42:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:42:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-28 03:42:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:33,243 INFO L225 Difference]: With dead ends: 63 [2024-11-28 03:42:33,243 INFO L226 Difference]: Without dead ends: 35 [2024-11-28 03:42:33,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:42:33,244 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:33,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 57 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-28 03:42:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-28 03:42:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-28 03:42:33,253 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 23 [2024-11-28 03:42:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:33,253 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-28 03:42:33,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,253 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-28 03:42:33,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:42:33,254 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:33,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:33,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:42:33,254 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:33,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash -273096290, now seen corresponding path program 1 times [2024-11-28 03:42:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87787171] [2024-11-28 03:42:33,257 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:33,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:42:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87787171] [2024-11-28 03:42:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87787171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:42:33,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:42:33,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:42:33,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772164796] [2024-11-28 03:42:33,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:42:33,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:42:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:33,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:42:33,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:42:33,439 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:33,599 INFO L93 Difference]: Finished difference Result 75 states and 97 transitions. [2024-11-28 03:42:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:42:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-28 03:42:33,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:33,600 INFO L225 Difference]: With dead ends: 75 [2024-11-28 03:42:33,600 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 03:42:33,601 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:42:33,601 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 58 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:33,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 19 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:33,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 03:42:33,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2024-11-28 03:42:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-28 03:42:33,615 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 25 [2024-11-28 03:42:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:33,616 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-28 03:42:33,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:33,616 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-28 03:42:33,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 03:42:33,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:33,617 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:33,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:42:33,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:33,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:33,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1295375938, now seen corresponding path program 1 times [2024-11-28 03:42:33,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:33,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334298019] [2024-11-28 03:42:33,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:33,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:42:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334298019] [2024-11-28 03:42:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334298019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841696144] [2024-11-28 03:42:33,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:33,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:33,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:33,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:42:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:33,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:42:33,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:42:34,044 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:42:34,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841696144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:34,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:34,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:42:34,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644798479] [2024-11-28 03:42:34,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:34,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:42:34,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:34,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:42:34,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:42:34,099 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:34,183 INFO L93 Difference]: Finished difference Result 81 states and 97 transitions. [2024-11-28 03:42:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:42:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-28 03:42:34,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:34,185 INFO L225 Difference]: With dead ends: 81 [2024-11-28 03:42:34,185 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 03:42:34,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:42:34,186 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:34,187 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 75 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:42:34,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 03:42:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-11-28 03:42:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 43 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2024-11-28 03:42:34,196 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 41 [2024-11-28 03:42:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:34,198 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2024-11-28 03:42:34,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2024-11-28 03:42:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:42:34,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:34,201 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:34,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:42:34,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:34,405 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:34,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:34,406 INFO L85 PathProgramCache]: Analyzing trace with hash 643020706, now seen corresponding path program 2 times [2024-11-28 03:42:34,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:34,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118882062] [2024-11-28 03:42:34,406 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:34,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:34,440 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:34,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:42:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:34,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118882062] [2024-11-28 03:42:34,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118882062] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:34,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113274999] [2024-11-28 03:42:34,620 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:34,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:34,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:34,622 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:34,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:42:34,719 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:34,719 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:34,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:42:34,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:34,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:42:34,871 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-28 03:42:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113274999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:34,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:34,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-28 03:42:34,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012655438] [2024-11-28 03:42:34,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:34,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:42:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:34,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:42:34,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:42:35,002 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:35,236 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2024-11-28 03:42:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:42:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:42:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:35,237 INFO L225 Difference]: With dead ends: 100 [2024-11-28 03:42:35,237 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 03:42:35,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:42:35,239 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:35,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 27 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:42:35,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 03:42:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-28 03:42:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.152542372881356) internal successors, (68), 59 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2024-11-28 03:42:35,256 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 43 [2024-11-28 03:42:35,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:35,259 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2024-11-28 03:42:35,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2024-11-28 03:42:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:42:35,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:35,263 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:35,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:42:35,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:35,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:35,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2083434434, now seen corresponding path program 3 times [2024-11-28 03:42:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049472840] [2024-11-28 03:42:35,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:35,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:35,681 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:42:35,681 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049472840] [2024-11-28 03:42:38,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049472840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:38,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701808368] [2024-11-28 03:42:38,941 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:38,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:38,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:38,943 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:38,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:42:39,038 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 03:42:39,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:39,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 03:42:39,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:39,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:40,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:42:40,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 43 [2024-11-28 03:42:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:42:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701808368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:40,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:40,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 29 [2024-11-28 03:42:40,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063140127] [2024-11-28 03:42:40,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:40,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:42:40,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:40,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:42:40,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:42:40,122 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 29 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:41,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:41,152 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2024-11-28 03:42:41,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:42:41,154 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 29 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-28 03:42:41,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:41,156 INFO L225 Difference]: With dead ends: 116 [2024-11-28 03:42:41,156 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 03:42:41,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:42:41,161 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:41,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 105 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:42:41,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 03:42:41,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2024-11-28 03:42:41,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.16) internal successors, (116), 100 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-28 03:42:41,185 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 59 [2024-11-28 03:42:41,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:41,186 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-28 03:42:41,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.586206896551724) internal successors, (162), 29 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:41,186 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-28 03:42:41,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:42:41,189 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:41,189 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:41,200 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:42:41,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:41,393 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:41,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash 148127206, now seen corresponding path program 4 times [2024-11-28 03:42:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:41,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804325249] [2024-11-28 03:42:41,394 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:42:41,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:41,418 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:42:41,418 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:41,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804325249] [2024-11-28 03:42:41,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804325249] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:41,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723953280] [2024-11-28 03:42:41,542 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:42:41,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:41,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:41,545 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:41,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:42:41,616 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:42:41,617 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:41,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:42:41,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:41,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:41,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:41,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723953280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:41,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:41,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:42:41,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953739834] [2024-11-28 03:42:41,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:41,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:42:41,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:41,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:42:41,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:42:41,778 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:42,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:42,336 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2024-11-28 03:42:42,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:42:42,336 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-28 03:42:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:42,338 INFO L225 Difference]: With dead ends: 165 [2024-11-28 03:42:42,338 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:42:42,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 112 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:42:42,339 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:42,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 69 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:42:42,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:42:42,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2024-11-28 03:42:42,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.1415094339622642) internal successors, (121), 106 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:42,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 121 transitions. [2024-11-28 03:42:42,355 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 121 transitions. Word has length 61 [2024-11-28 03:42:42,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:42,355 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 121 transitions. [2024-11-28 03:42:42,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:42,356 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 121 transitions. [2024-11-28 03:42:42,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:42:42,357 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:42,357 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:42,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:42,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:42,561 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:42,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:42,562 INFO L85 PathProgramCache]: Analyzing trace with hash 664510118, now seen corresponding path program 5 times [2024-11-28 03:42:42,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:42,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690036832] [2024-11-28 03:42:42,562 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:42:42,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:42,591 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:42:42,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:42,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690036832] [2024-11-28 03:42:42,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690036832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:42,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733741818] [2024-11-28 03:42:42,721 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:42:42,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:42,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:42,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:42,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:42:42,833 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-28 03:42:42,833 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:42,835 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:42:42,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:42,930 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:42,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:42:43,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733741818] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:43,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:43,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2024-11-28 03:42:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94343199] [2024-11-28 03:42:43,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:43,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:42:43,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:43,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:42:43,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:42:43,008 INFO L87 Difference]: Start difference. First operand 107 states and 121 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:43,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:43,337 INFO L93 Difference]: Finished difference Result 180 states and 201 transitions. [2024-11-28 03:42:43,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:42:43,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-28 03:42:43,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:43,339 INFO L225 Difference]: With dead ends: 180 [2024-11-28 03:42:43,339 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 03:42:43,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:42:43,341 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:43,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 52 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:42:43,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 03:42:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2024-11-28 03:42:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.12) internal successors, (84), 75 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2024-11-28 03:42:43,352 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 61 [2024-11-28 03:42:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:43,352 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2024-11-28 03:42:43,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2024-11-28 03:42:43,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:42:43,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:43,353 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 03:42:43,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:42:43,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:43,554 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:43,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1654892514, now seen corresponding path program 6 times [2024-11-28 03:42:43,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:43,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708313423] [2024-11-28 03:42:43,555 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:43,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:43,596 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:42:43,596 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 03:42:43,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:43,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708313423] [2024-11-28 03:42:43,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708313423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:43,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962896663] [2024-11-28 03:42:43,803 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:42:43,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:43,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:43,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:43,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:42:44,022 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-28 03:42:44,022 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:44,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:42:44,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:44,163 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 03:42:44,164 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 03:42:44,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962896663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:44,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:44,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-28 03:42:44,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126899361] [2024-11-28 03:42:44,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:44,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:42:44,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:44,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:42:44,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:42:44,268 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:44,448 INFO L93 Difference]: Finished difference Result 147 states and 163 transitions. [2024-11-28 03:42:44,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:42:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-11-28 03:42:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:44,450 INFO L225 Difference]: With dead ends: 147 [2024-11-28 03:42:44,450 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 03:42:44,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 140 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:42:44,451 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:44,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 166 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:42:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 03:42:44,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2024-11-28 03:42:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 77 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2024-11-28 03:42:44,461 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 75 [2024-11-28 03:42:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:44,461 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2024-11-28 03:42:44,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2024-11-28 03:42:44,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:42:44,463 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:44,463 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:44,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:42:44,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:44,669 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:44,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:44,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1955775686, now seen corresponding path program 7 times [2024-11-28 03:42:44,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:44,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828066204] [2024-11-28 03:42:44,670 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:44,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:51,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:51,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828066204] [2024-11-28 03:42:51,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828066204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:51,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342933848] [2024-11-28 03:42:51,426 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:42:51,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:51,428 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:51,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:42:51,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:51,531 WARN L254 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 03:42:51,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:51,600 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 03:42:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:42:52,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:42:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342933848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:52,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 15, 11] total 47 [2024-11-28 03:42:52,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596993873] [2024-11-28 03:42:52,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:52,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:42:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:52,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:42:52,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1972, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:42:52,838 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand has 47 states, 47 states have (on average 4.1063829787234045) internal successors, (193), 47 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:56,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:56,948 INFO L93 Difference]: Finished difference Result 330 states and 372 transitions. [2024-11-28 03:42:56,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:42:56,949 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 4.1063829787234045) internal successors, (193), 47 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-11-28 03:42:56,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:56,950 INFO L225 Difference]: With dead ends: 330 [2024-11-28 03:42:56,950 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 03:42:56,953 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1439 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=587, Invalid=4963, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 03:42:56,954 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 360 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 3283 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 3283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:56,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 240 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 3283 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:42:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 03:42:56,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 169. [2024-11-28 03:42:56,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.130952380952381) internal successors, (190), 168 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:56,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2024-11-28 03:42:56,996 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 77 [2024-11-28 03:42:56,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:56,996 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2024-11-28 03:42:56,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 4.1063829787234045) internal successors, (193), 47 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2024-11-28 03:42:56,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 03:42:57,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:57,001 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:57,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:42:57,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:57,202 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:57,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 41544910, now seen corresponding path program 8 times [2024-11-28 03:42:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756454639] [2024-11-28 03:42:57,202 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:57,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:57,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 03:42:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756454639] [2024-11-28 03:42:57,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756454639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:57,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877642603] [2024-11-28 03:42:57,401 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:42:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:57,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:57,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:57,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:42:57,493 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:42:57,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:42:57,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:42:57,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 03:42:57,615 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-28 03:42:57,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877642603] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:42:57,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:42:57,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-28 03:42:57,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949148223] [2024-11-28 03:42:57,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:57,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:42:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:57,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:42:57,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:42:57,734 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:58,040 INFO L93 Difference]: Finished difference Result 245 states and 279 transitions. [2024-11-28 03:42:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:42:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2024-11-28 03:42:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:58,041 INFO L225 Difference]: With dead ends: 245 [2024-11-28 03:42:58,042 INFO L226 Difference]: Without dead ends: 104 [2024-11-28 03:42:58,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:42:58,044 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 162 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:58,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 64 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:42:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-28 03:42:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2024-11-28 03:42:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0947368421052632) internal successors, (104), 95 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2024-11-28 03:42:58,056 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 81 [2024-11-28 03:42:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:58,056 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2024-11-28 03:42:58,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.823529411764706) internal successors, (65), 17 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:42:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2024-11-28 03:42:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 03:42:58,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:58,059 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:58,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:42:58,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:58,263 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:58,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1886215990, now seen corresponding path program 9 times [2024-11-28 03:42:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:58,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200859442] [2024-11-28 03:42:58,264 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:42:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:58,463 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 03:42:58,463 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:03,992 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 3 proven. 132 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 03:43:03,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200859442] [2024-11-28 03:43:03,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200859442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:03,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750822116] [2024-11-28 03:43:03,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:03,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:03,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:03,995 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:04,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:43:04,109 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 03:43:04,109 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:04,112 WARN L254 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 156 conjuncts are in the unsatisfiable core [2024-11-28 03:43:04,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:04,314 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 03:43:06,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:43:06,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:43:06,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 33 [2024-11-28 03:43:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:06,512 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:09,036 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 34 treesize of output 30 [2024-11-28 03:43:09,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:43:09,045 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 74 treesize of output 60 [2024-11-28 03:43:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:09,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750822116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:09,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:09,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 29, 41] total 90 [2024-11-28 03:43:09,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76844912] [2024-11-28 03:43:09,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:09,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2024-11-28 03:43:09,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:09,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2024-11-28 03:43:09,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=559, Invalid=7451, Unknown=0, NotChecked=0, Total=8010 [2024-11-28 03:43:09,386 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand has 90 states, 90 states have (on average 3.022222222222222) internal successors, (272), 90 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:15,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:15,121 INFO L93 Difference]: Finished difference Result 280 states and 308 transitions. [2024-11-28 03:43:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-28 03:43:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 3.022222222222222) internal successors, (272), 90 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-28 03:43:15,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:15,123 INFO L225 Difference]: With dead ends: 280 [2024-11-28 03:43:15,123 INFO L226 Difference]: Without dead ends: 275 [2024-11-28 03:43:15,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 149 SyntacticMatches, 14 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4885 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=980, Invalid=12130, Unknown=0, NotChecked=0, Total=13110 [2024-11-28 03:43:15,127 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 113 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 5246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:15,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 216 Invalid, 5246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:43:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2024-11-28 03:43:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 242. [2024-11-28 03:43:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.112033195020747) internal successors, (268), 241 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 268 transitions. [2024-11-28 03:43:15,158 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 268 transitions. Word has length 95 [2024-11-28 03:43:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:15,158 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 268 transitions. [2024-11-28 03:43:15,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 3.022222222222222) internal successors, (272), 90 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 268 transitions. [2024-11-28 03:43:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 03:43:15,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:15,160 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:15,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:43:15,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:43:15,361 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:15,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1663464210, now seen corresponding path program 10 times [2024-11-28 03:43:15,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767929965] [2024-11-28 03:43:15,362 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:15,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:15,380 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:15,380 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 03:43:15,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767929965] [2024-11-28 03:43:15,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767929965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:15,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118572359] [2024-11-28 03:43:15,543 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:15,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:15,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:15,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:15,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:43:15,649 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:15,649 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:15,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:43:15,653 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:15,781 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 03:43:15,781 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-28 03:43:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118572359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:15,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:15,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 03:43:15,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491013076] [2024-11-28 03:43:15,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:15,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:43:15,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:15,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:43:15,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:43:15,900 INFO L87 Difference]: Start difference. First operand 242 states and 268 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:16,578 INFO L93 Difference]: Finished difference Result 422 states and 469 transitions. [2024-11-28 03:43:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:43:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-28 03:43:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:16,580 INFO L225 Difference]: With dead ends: 422 [2024-11-28 03:43:16,581 INFO L226 Difference]: Without dead ends: 309 [2024-11-28 03:43:16,581 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:43:16,582 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 174 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:16,582 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 52 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:43:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-28 03:43:16,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 238. [2024-11-28 03:43:16,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0970464135021096) internal successors, (260), 237 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 260 transitions. [2024-11-28 03:43:16,611 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 260 transitions. Word has length 97 [2024-11-28 03:43:16,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:16,611 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 260 transitions. [2024-11-28 03:43:16,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:16,611 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 260 transitions. [2024-11-28 03:43:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 03:43:16,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:16,612 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:16,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:43:16,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:43:16,813 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:16,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash -681179246, now seen corresponding path program 11 times [2024-11-28 03:43:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:16,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210265926] [2024-11-28 03:43:16,814 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:16,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:16,875 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:43:16,876 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,063 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:17,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210265926] [2024-11-28 03:43:17,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210265926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:17,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420373402] [2024-11-28 03:43:17,064 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:17,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:17,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:17,066 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:17,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:43:17,577 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2024-11-28 03:43:17,577 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:17,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:43:17,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:17,696 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:17,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420373402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:17,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2024-11-28 03:43:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415788225] [2024-11-28 03:43:17,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:17,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:43:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:17,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:43:17,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:43:17,827 INFO L87 Difference]: Start difference. First operand 238 states and 260 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:18,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:18,266 INFO L93 Difference]: Finished difference Result 414 states and 449 transitions. [2024-11-28 03:43:18,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:43:18,266 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-28 03:43:18,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:18,268 INFO L225 Difference]: With dead ends: 414 [2024-11-28 03:43:18,268 INFO L226 Difference]: Without dead ends: 285 [2024-11-28 03:43:18,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 182 SyntacticMatches, 11 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:43:18,269 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 145 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:18,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 175 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:43:18,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-28 03:43:18,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 187. [2024-11-28 03:43:18,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.0913978494623655) internal successors, (203), 186 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:18,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 203 transitions. [2024-11-28 03:43:18,297 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 203 transitions. Word has length 99 [2024-11-28 03:43:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:18,297 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 203 transitions. [2024-11-28 03:43:18,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 18 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 203 transitions. [2024-11-28 03:43:18,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 03:43:18,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:18,298 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:18,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:43:18,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:43:18,499 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:18,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1194801070, now seen corresponding path program 12 times [2024-11-28 03:43:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 03:43:18,499 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:18,545 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 03:43:18,545 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:18,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 03:43:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262415487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657906566] [2024-11-28 03:43:18,728 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:43:18,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:18,731 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:18,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:43:18,920 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2024-11-28 03:43:18,920 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:18,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:43:18,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:19,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-28 03:43:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657906566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:19,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:19,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 03:43:19,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503964586] [2024-11-28 03:43:19,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:19,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:43:19,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:19,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:43:19,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:43:19,167 INFO L87 Difference]: Start difference. First operand 187 states and 203 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:19,701 INFO L93 Difference]: Finished difference Result 280 states and 302 transitions. [2024-11-28 03:43:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:43:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2024-11-28 03:43:19,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:19,702 INFO L225 Difference]: With dead ends: 280 [2024-11-28 03:43:19,703 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 03:43:19,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 186 SyntacticMatches, 9 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=401, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:43:19,704 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 200 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:19,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 60 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:43:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 03:43:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2024-11-28 03:43:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.0810810810810811) internal successors, (120), 111 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 120 transitions. [2024-11-28 03:43:19,727 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 120 transitions. Word has length 99 [2024-11-28 03:43:19,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:19,727 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 120 transitions. [2024-11-28 03:43:19,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:19,728 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 120 transitions. [2024-11-28 03:43:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-28 03:43:19,729 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:19,729 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:19,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:19,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:43:19,930 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:19,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:19,930 INFO L85 PathProgramCache]: Analyzing trace with hash -2093938454, now seen corresponding path program 13 times [2024-11-28 03:43:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:19,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609615717] [2024-11-28 03:43:19,931 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:20,157 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:43:20,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609615717] [2024-11-28 03:43:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609615717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573374008] [2024-11-28 03:43:20,158 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:43:20,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:20,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:20,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:20,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:43:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:20,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:43:20,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:20,435 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:43:20,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 03:43:20,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573374008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:20,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:20,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-28 03:43:20,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538823573] [2024-11-28 03:43:20,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:20,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:43:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:20,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:43:20,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:43:20,555 INFO L87 Difference]: Start difference. First operand 112 states and 120 transitions. Second operand has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:20,731 INFO L93 Difference]: Finished difference Result 215 states and 231 transitions. [2024-11-28 03:43:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:43:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-28 03:43:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:20,733 INFO L225 Difference]: With dead ends: 215 [2024-11-28 03:43:20,734 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 03:43:20,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 206 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:43:20,735 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:20,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:43:20,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 03:43:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2024-11-28 03:43:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.079646017699115) internal successors, (122), 113 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:20,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2024-11-28 03:43:20,757 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 111 [2024-11-28 03:43:20,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:20,757 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2024-11-28 03:43:20,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.55) internal successors, (71), 20 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:20,758 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2024-11-28 03:43:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-28 03:43:20,758 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:20,758 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:20,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:20,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:43:20,965 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:20,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1715110862, now seen corresponding path program 14 times [2024-11-28 03:43:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:20,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144685103] [2024-11-28 03:43:20,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:20,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:21,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:21,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144685103] [2024-11-28 03:43:30,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144685103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932466241] [2024-11-28 03:43:30,080 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:43:30,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:30,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:30,083 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:30,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:43:30,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:43:30,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:30,195 WARN L254 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 182 conjuncts are in the unsatisfiable core [2024-11-28 03:43:30,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:30,260 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 03:43:30,978 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:30,978 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:32,066 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:43:32,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932466241] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:32,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:32,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 21, 15] total 73 [2024-11-28 03:43:32,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15478345] [2024-11-28 03:43:32,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:32,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2024-11-28 03:43:32,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:32,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2024-11-28 03:43:32,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=4906, Unknown=0, NotChecked=0, Total=5256 [2024-11-28 03:43:32,070 INFO L87 Difference]: Start difference. First operand 114 states and 122 transitions. Second operand has 73 states, 73 states have (on average 3.958904109589041) internal successors, (289), 73 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:39,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:39,863 INFO L93 Difference]: Finished difference Result 466 states and 520 transitions. [2024-11-28 03:43:39,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 03:43:39,863 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 3.958904109589041) internal successors, (289), 73 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2024-11-28 03:43:39,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:39,867 INFO L225 Difference]: With dead ends: 466 [2024-11-28 03:43:39,867 INFO L226 Difference]: Without dead ends: 460 [2024-11-28 03:43:39,870 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3985 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1412, Invalid=12868, Unknown=0, NotChecked=0, Total=14280 [2024-11-28 03:43:39,871 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 789 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 862 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 6348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 862 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:39,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 278 Invalid, 6348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [862 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 03:43:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2024-11-28 03:43:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 364. [2024-11-28 03:43:39,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 363 states have (on average 1.1239669421487604) internal successors, (408), 363 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:39,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 408 transitions. [2024-11-28 03:43:39,944 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 408 transitions. Word has length 113 [2024-11-28 03:43:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:39,944 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 408 transitions. [2024-11-28 03:43:39,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 3.958904109589041) internal successors, (289), 73 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:39,945 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 408 transitions. [2024-11-28 03:43:39,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 03:43:39,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:39,947 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:39,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:43:40,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:43:40,147 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:40,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1977804758, now seen corresponding path program 15 times [2024-11-28 03:43:40,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:40,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644904732] [2024-11-28 03:43:40,149 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:40,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:40,265 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:43:40,265 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 16 proven. 45 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:40,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644904732] [2024-11-28 03:43:40,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644904732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146099551] [2024-11-28 03:43:40,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:43:40,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:40,556 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:40,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:43:40,747 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:43:40,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:40,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:40,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:40,979 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:40,979 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:41,158 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146099551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:41,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:41,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-28 03:43:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995061427] [2024-11-28 03:43:41,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:41,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 03:43:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:41,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 03:43:41,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:43:41,160 INFO L87 Difference]: Start difference. First operand 364 states and 408 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:42,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:42,101 INFO L93 Difference]: Finished difference Result 768 states and 859 transitions. [2024-11-28 03:43:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:43:42,102 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-28 03:43:42,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:42,105 INFO L225 Difference]: With dead ends: 768 [2024-11-28 03:43:42,105 INFO L226 Difference]: Without dead ends: 516 [2024-11-28 03:43:42,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 214 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:43:42,106 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 184 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1281 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:42,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 73 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1281 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:43:42,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-28 03:43:42,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 384. [2024-11-28 03:43:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 1.0992167101827677) internal successors, (421), 383 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 421 transitions. [2024-11-28 03:43:42,167 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 421 transitions. Word has length 117 [2024-11-28 03:43:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:42,167 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 421 transitions. [2024-11-28 03:43:42,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 421 transitions. [2024-11-28 03:43:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-28 03:43:42,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:42,169 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:42,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:42,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:43:42,370 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:42,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1202976618, now seen corresponding path program 16 times [2024-11-28 03:43:42,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:42,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134302977] [2024-11-28 03:43:42,370 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:42,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:42,393 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:42,393 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:42,612 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:42,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134302977] [2024-11-28 03:43:42,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134302977] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:42,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720491701] [2024-11-28 03:43:42,613 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:43:42,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:42,617 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:42,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:43:42,742 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:43:42,742 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:42,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:43:42,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:43,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:43,211 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 03:43:43,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720491701] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:43,211 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:43,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 21 [2024-11-28 03:43:43,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125991901] [2024-11-28 03:43:43,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:43,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:43:43,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:43,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:43:43,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:43:43,213 INFO L87 Difference]: Start difference. First operand 384 states and 421 transitions. Second operand has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:43,793 INFO L93 Difference]: Finished difference Result 617 states and 673 transitions. [2024-11-28 03:43:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:43:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-28 03:43:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:43,796 INFO L225 Difference]: With dead ends: 617 [2024-11-28 03:43:43,796 INFO L226 Difference]: Without dead ends: 270 [2024-11-28 03:43:43,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 216 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:43:43,797 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 212 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:43,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 59 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:43:43,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2024-11-28 03:43:43,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 251. [2024-11-28 03:43:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.1) internal successors, (275), 250 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 275 transitions. [2024-11-28 03:43:43,839 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 275 transitions. Word has length 117 [2024-11-28 03:43:43,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:43,839 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 275 transitions. [2024-11-28 03:43:43,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.380952380952381) internal successors, (71), 21 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:43:43,839 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 275 transitions. [2024-11-28 03:43:43,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 03:43:43,840 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:43,840 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:43,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:43:44,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:44,040 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:44,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:44,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1157190190, now seen corresponding path program 17 times [2024-11-28 03:43:44,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:44,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019569276] [2024-11-28 03:43:44,041 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:44,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:44,529 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:43:44,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019569276] [2024-11-28 03:43:54,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019569276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:54,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544971649] [2024-11-28 03:43:54,067 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:43:54,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:54,069 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:54,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:43:54,460 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-28 03:43:54,461 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:43:54,466 WARN L254 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 213 conjuncts are in the unsatisfiable core [2024-11-28 03:43:54,470 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:54,767 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 03:43:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:43:56,331 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:57,085 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:43:57,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544971649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:43:57,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:43:57,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 24, 17] total 59 [2024-11-28 03:43:57,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450208955] [2024-11-28 03:43:57,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:43:57,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 03:43:57,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:57,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 03:43:57,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=3223, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 03:43:57,089 INFO L87 Difference]: Start difference. First operand 251 states and 275 transitions. Second operand has 59 states, 59 states have (on average 5.830508474576271) internal successors, (344), 59 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:00,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:00,239 INFO L93 Difference]: Finished difference Result 468 states and 506 transitions. [2024-11-28 03:44:00,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:44:00,240 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.830508474576271) internal successors, (344), 59 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-28 03:44:00,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:00,242 INFO L225 Difference]: With dead ends: 468 [2024-11-28 03:44:00,242 INFO L226 Difference]: Without dead ends: 464 [2024-11-28 03:44:00,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=208, Invalid=3332, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:44:00,244 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 4306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 4308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:00,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 381 Invalid, 4308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 03:44:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-28 03:44:00,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 338. [2024-11-28 03:44:00,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.0949554896142433) internal successors, (369), 337 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:00,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 369 transitions. [2024-11-28 03:44:00,313 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 369 transitions. Word has length 131 [2024-11-28 03:44:00,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:00,313 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 369 transitions. [2024-11-28 03:44:00,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.830508474576271) internal successors, (344), 59 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:00,313 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 369 transitions. [2024-11-28 03:44:00,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-28 03:44:00,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:00,315 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:00,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:00,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:00,515 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:00,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2028457902, now seen corresponding path program 18 times [2024-11-28 03:44:00,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:00,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433402428] [2024-11-28 03:44:00,516 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:00,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:00,630 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:44:00,630 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 27 proven. 34 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:44:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433402428] [2024-11-28 03:44:00,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433402428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:00,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222637980] [2024-11-28 03:44:00,935 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:00,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:00,937 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:00,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:44:01,180 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-28 03:44:01,180 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:01,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:44:01,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:01,445 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 03:44:01,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-28 03:44:01,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222637980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:01,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:01,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 27 [2024-11-28 03:44:01,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796530894] [2024-11-28 03:44:01,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:01,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:44:01,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:01,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:44:01,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:44:01,662 INFO L87 Difference]: Start difference. First operand 338 states and 369 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:02,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:02,440 INFO L93 Difference]: Finished difference Result 559 states and 605 transitions. [2024-11-28 03:44:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:44:02,440 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-28 03:44:02,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:02,441 INFO L225 Difference]: With dead ends: 559 [2024-11-28 03:44:02,442 INFO L226 Difference]: Without dead ends: 224 [2024-11-28 03:44:02,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 241 SyntacticMatches, 9 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=841, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:44:02,443 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:02,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 72 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:44:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-28 03:44:02,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 223. [2024-11-28 03:44:02,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.072072072072072) internal successors, (238), 222 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 238 transitions. [2024-11-28 03:44:02,500 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 238 transitions. Word has length 131 [2024-11-28 03:44:02,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:02,500 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 238 transitions. [2024-11-28 03:44:02,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 238 transitions. [2024-11-28 03:44:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 03:44:02,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:02,502 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:02,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:44:02,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:02,706 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:02,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:02,707 INFO L85 PathProgramCache]: Analyzing trace with hash 655781850, now seen corresponding path program 19 times [2024-11-28 03:44:02,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:02,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895864117] [2024-11-28 03:44:02,707 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:02,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:44:03,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895864117] [2024-11-28 03:44:03,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895864117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:03,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113290481] [2024-11-28 03:44:03,034 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:44:03,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:03,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:03,037 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:03,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:44:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:03,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:44:03,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:44:03,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-28 03:44:03,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113290481] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:03,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:03,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-28 03:44:03,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984835242] [2024-11-28 03:44:03,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:03,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:44:03,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:03,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:44:03,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=487, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:44:03,822 INFO L87 Difference]: Start difference. First operand 223 states and 238 transitions. Second operand has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:04,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:04,262 INFO L93 Difference]: Finished difference Result 335 states and 363 transitions. [2024-11-28 03:44:04,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:44:04,265 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-11-28 03:44:04,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:04,266 INFO L225 Difference]: With dead ends: 335 [2024-11-28 03:44:04,267 INFO L226 Difference]: Without dead ends: 158 [2024-11-28 03:44:04,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 247 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:44:04,269 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 244 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:04,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 54 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:44:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-28 03:44:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 150. [2024-11-28 03:44:04,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0604026845637584) internal successors, (158), 149 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 158 transitions. [2024-11-28 03:44:04,315 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 158 transitions. Word has length 135 [2024-11-28 03:44:04,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:04,316 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 158 transitions. [2024-11-28 03:44:04,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 26 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:04,316 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 158 transitions. [2024-11-28 03:44:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 03:44:04,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:04,317 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:04,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:44:04,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:44:04,521 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:04,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:04,522 INFO L85 PathProgramCache]: Analyzing trace with hash -35430698, now seen corresponding path program 20 times [2024-11-28 03:44:04,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:04,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855654880] [2024-11-28 03:44:04,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:04,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:04,688 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:04,689 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:19,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855654880] [2024-11-28 03:44:19,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855654880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640213847] [2024-11-28 03:44:19,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:44:19,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:19,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:19,203 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:19,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:44:19,369 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:44:19,369 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:19,374 WARN L254 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 250 conjuncts are in the unsatisfiable core [2024-11-28 03:44:19,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:19,460 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 03:44:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 441 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:20,493 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:44:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640213847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:22,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 27, 19] total 84 [2024-11-28 03:44:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48034198] [2024-11-28 03:44:22,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:22,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2024-11-28 03:44:22,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:22,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2024-11-28 03:44:22,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=420, Invalid=6552, Unknown=0, NotChecked=0, Total=6972 [2024-11-28 03:44:22,476 INFO L87 Difference]: Start difference. First operand 150 states and 158 transitions. Second operand has 84 states, 84 states have (on average 4.2976190476190474) internal successors, (361), 84 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:34,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:34,128 INFO L93 Difference]: Finished difference Result 518 states and 582 transitions. [2024-11-28 03:44:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-28 03:44:34,129 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 4.2976190476190474) internal successors, (361), 84 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 149 [2024-11-28 03:44:34,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:34,132 INFO L225 Difference]: With dead ends: 518 [2024-11-28 03:44:34,132 INFO L226 Difference]: Without dead ends: 512 [2024-11-28 03:44:34,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4082 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=1438, Invalid=14564, Unknown=0, NotChecked=0, Total=16002 [2024-11-28 03:44:34,134 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1047 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 8775 mSolverCounterSat, 1128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 9903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1128 IncrementalHoareTripleChecker+Valid, 8775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:34,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 359 Invalid, 9903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1128 Valid, 8775 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 03:44:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2024-11-28 03:44:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 440. [2024-11-28 03:44:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 1.1275626423690206) internal successors, (495), 439 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 495 transitions. [2024-11-28 03:44:34,237 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 495 transitions. Word has length 149 [2024-11-28 03:44:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:34,237 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 495 transitions. [2024-11-28 03:44:34,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 4.2976190476190474) internal successors, (361), 84 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 495 transitions. [2024-11-28 03:44:34,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:44:34,239 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:34,239 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:34,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:34,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:34,440 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:34,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:34,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1440677598, now seen corresponding path program 21 times [2024-11-28 03:44:34,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:34,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257143132] [2024-11-28 03:44:34,440 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:34,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:34,600 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 03:44:34,600 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 03:44:34,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257143132] [2024-11-28 03:44:34,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257143132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:34,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316809288] [2024-11-28 03:44:34,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:44:34,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:34,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:34,918 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:34,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:44:35,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-28 03:44:35,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:35,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:44:35,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 03:44:35,452 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 49 proven. 64 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 03:44:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316809288] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:35,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-28 03:44:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852062348] [2024-11-28 03:44:35,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:35,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 03:44:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:35,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 03:44:35,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=611, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:44:35,706 INFO L87 Difference]: Start difference. First operand 440 states and 495 transitions. Second operand has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:36,385 INFO L93 Difference]: Finished difference Result 767 states and 848 transitions. [2024-11-28 03:44:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 03:44:36,385 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2024-11-28 03:44:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:36,387 INFO L225 Difference]: With dead ends: 767 [2024-11-28 03:44:36,387 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 03:44:36,388 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 280 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 554 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:44:36,388 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 248 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:36,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 218 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:44:36,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 03:44:36,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 536. [2024-11-28 03:44:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 535 states have (on average 1.1158878504672898) internal successors, (597), 535 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 597 transitions. [2024-11-28 03:44:36,550 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 597 transitions. Word has length 153 [2024-11-28 03:44:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:36,551 INFO L471 AbstractCegarLoop]: Abstraction has 536 states and 597 transitions. [2024-11-28 03:44:36,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 29 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:36,551 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 597 transitions. [2024-11-28 03:44:36,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 03:44:36,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:36,553 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:36,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:36,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:36,757 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash 205075522, now seen corresponding path program 22 times [2024-11-28 03:44:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673760310] [2024-11-28 03:44:36,758 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:36,788 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:36,789 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:37,071 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 64 proven. 49 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2024-11-28 03:44:37,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:37,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673760310] [2024-11-28 03:44:37,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673760310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:37,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80345859] [2024-11-28 03:44:37,071 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:44:37,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:37,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:37,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:37,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:44:37,207 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:44:37,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:37,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:44:37,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:37,419 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 79 proven. 49 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-28 03:44:37,419 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 79 proven. 49 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2024-11-28 03:44:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80345859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:37,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 27 [2024-11-28 03:44:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862053116] [2024-11-28 03:44:37,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:37,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:44:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:37,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:44:37,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:44:37,577 INFO L87 Difference]: Start difference. First operand 536 states and 597 transitions. Second operand has 27 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:38,525 INFO L93 Difference]: Finished difference Result 1188 states and 1315 transitions. [2024-11-28 03:44:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:44:38,525 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2024-11-28 03:44:38,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:38,528 INFO L225 Difference]: With dead ends: 1188 [2024-11-28 03:44:38,528 INFO L226 Difference]: Without dead ends: 664 [2024-11-28 03:44:38,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 286 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=311, Invalid=879, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:44:38,529 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 384 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:38,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 63 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:44:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2024-11-28 03:44:38,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 616. [2024-11-28 03:44:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 1.0943089430894308) internal successors, (673), 615 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 673 transitions. [2024-11-28 03:44:38,723 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 673 transitions. Word has length 155 [2024-11-28 03:44:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:38,723 INFO L471 AbstractCegarLoop]: Abstraction has 616 states and 673 transitions. [2024-11-28 03:44:38,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.8518518518518516) internal successors, (104), 27 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 673 transitions. [2024-11-28 03:44:38,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-28 03:44:38,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:38,725 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:38,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:44:38,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:44:38,926 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:38,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:38,926 INFO L85 PathProgramCache]: Analyzing trace with hash -169827738, now seen corresponding path program 23 times [2024-11-28 03:44:38,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:38,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873556242] [2024-11-28 03:44:38,926 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:38,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:39,159 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:44:39,159 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:39,426 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 64 proven. 66 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-28 03:44:39,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873556242] [2024-11-28 03:44:39,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873556242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:39,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001594609] [2024-11-28 03:44:39,426 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:44:39,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:39,429 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:39,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:44:40,469 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-28 03:44:40,469 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:44:40,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:44:40,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 03:44:40,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:41,307 INFO L134 CoverageAnalysis]: Checked inductivity of 503 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2024-11-28 03:44:41,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001594609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:41,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:41,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 21] total 48 [2024-11-28 03:44:41,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903831863] [2024-11-28 03:44:41,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:41,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:44:41,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:41,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:44:41,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1892, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:44:41,311 INFO L87 Difference]: Start difference. First operand 616 states and 673 transitions. Second operand has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:43,431 INFO L93 Difference]: Finished difference Result 1160 states and 1265 transitions. [2024-11-28 03:44:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:44:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2024-11-28 03:44:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:43,433 INFO L225 Difference]: With dead ends: 1160 [2024-11-28 03:44:43,433 INFO L226 Difference]: Without dead ends: 534 [2024-11-28 03:44:43,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 278 SyntacticMatches, 10 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1661 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=4837, Unknown=0, NotChecked=0, Total=5700 [2024-11-28 03:44:43,435 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 982 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 2680 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 2680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:43,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 112 Invalid, 3564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [884 Valid, 2680 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:44:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-28 03:44:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 328. [2024-11-28 03:44:43,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 1.033639143730887) internal successors, (338), 327 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:43,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 338 transitions. [2024-11-28 03:44:43,513 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 338 transitions. Word has length 157 [2024-11-28 03:44:43,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:43,513 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 338 transitions. [2024-11-28 03:44:43,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.8541666666666665) internal successors, (137), 48 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:43,513 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 338 transitions. [2024-11-28 03:44:43,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 03:44:43,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:43,514 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:43,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:44:43,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:43,715 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:43,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:43,715 INFO L85 PathProgramCache]: Analyzing trace with hash -802367782, now seen corresponding path program 24 times [2024-11-28 03:44:43,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:43,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552982087] [2024-11-28 03:44:43,716 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:44:43,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:43,976 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:44:43,976 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:02,052 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:45:02,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552982087] [2024-11-28 03:45:02,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552982087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:02,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540892608] [2024-11-28 03:45:02,053 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:02,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:02,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:02,057 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:02,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:45:02,451 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-28 03:45:02,451 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:02,462 WARN L254 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 301 conjuncts are in the unsatisfiable core [2024-11-28 03:45:02,478 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:02,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:02,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:02,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:02,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:02,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:02,672 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 1 [2024-11-28 03:45:06,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:06,830 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:45:06,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 110 treesize of output 227 [2024-11-28 03:45:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 15 proven. 512 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:45:07,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:12,143 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 527 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-28 03:45:12,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540892608] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:12,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:12,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 33, 27] total 81 [2024-11-28 03:45:12,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506910847] [2024-11-28 03:45:12,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:12,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-28 03:45:12,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:12,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-28 03:45:12,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=6151, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 03:45:12,147 INFO L87 Difference]: Start difference. First operand 328 states and 338 transitions. Second operand has 81 states, 81 states have (on average 4.962962962962963) internal successors, (402), 81 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:21,238 INFO L93 Difference]: Finished difference Result 333 states and 342 transitions. [2024-11-28 03:45:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 03:45:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.962962962962963) internal successors, (402), 81 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2024-11-28 03:45:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:21,241 INFO L225 Difference]: With dead ends: 333 [2024-11-28 03:45:21,241 INFO L226 Difference]: Without dead ends: 203 [2024-11-28 03:45:21,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 306 SyntacticMatches, 46 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3746 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=515, Invalid=8605, Unknown=0, NotChecked=0, Total=9120 [2024-11-28 03:45:21,244 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 5902 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 5902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:21,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 172 Invalid, 6094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 5902 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-28 03:45:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-28 03:45:21,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 182. [2024-11-28 03:45:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 1.0497237569060773) internal successors, (190), 181 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 190 transitions. [2024-11-28 03:45:21,316 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 190 transitions. Word has length 167 [2024-11-28 03:45:21,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:21,316 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 190 transitions. [2024-11-28 03:45:21,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.962962962962963) internal successors, (402), 81 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:21,316 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 190 transitions. [2024-11-28 03:45:21,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 03:45:21,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:21,317 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:21,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:45:21,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:21,518 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:21,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:21,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2102689558, now seen corresponding path program 25 times [2024-11-28 03:45:21,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:21,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032308084] [2024-11-28 03:45:21,519 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:21,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:21,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:25,306 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 409 proven. 288 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:25,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032308084] [2024-11-28 03:45:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032308084] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:25,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936859264] [2024-11-28 03:45:25,306 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:25,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:25,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:25,311 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:25,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:45:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:25,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:45:25,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 79 proven. 49 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-28 03:45:26,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 79 proven. 49 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2024-11-28 03:45:26,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936859264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:26,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:26,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 19, 19] total 103 [2024-11-28 03:45:26,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383749173] [2024-11-28 03:45:26,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:26,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 03:45:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:26,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 03:45:26,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=949, Invalid=9557, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 03:45:26,611 INFO L87 Difference]: Start difference. First operand 182 states and 190 transitions. Second operand has 103 states, 103 states have (on average 2.378640776699029) internal successors, (245), 103 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:27,449 INFO L93 Difference]: Finished difference Result 349 states and 365 transitions. [2024-11-28 03:45:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:45:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.378640776699029) internal successors, (245), 103 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-28 03:45:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:27,451 INFO L225 Difference]: With dead ends: 349 [2024-11-28 03:45:27,451 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 03:45:27,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 338 SyntacticMatches, 9 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5030 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=949, Invalid=9557, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 03:45:27,453 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:27,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 208 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:45:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 03:45:27,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2024-11-28 03:45:27,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.0491803278688525) internal successors, (192), 183 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 192 transitions. [2024-11-28 03:45:27,501 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 192 transitions. Word has length 181 [2024-11-28 03:45:27,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:27,502 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 192 transitions. [2024-11-28 03:45:27,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.378640776699029) internal successors, (245), 103 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:27,502 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 192 transitions. [2024-11-28 03:45:27,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-28 03:45:27,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:27,503 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:27,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:45:27,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:45:27,704 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:27,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:27,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1812586758, now seen corresponding path program 26 times [2024-11-28 03:45:27,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:27,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611052767] [2024-11-28 03:45:27,705 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:27,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:27,738 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:27,738 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:28,122 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 66 proven. 79 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:45:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611052767] [2024-11-28 03:45:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611052767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093481325] [2024-11-28 03:45:28,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:28,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:28,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:28,125 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:28,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:45:28,324 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:28,324 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:28,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 03:45:28,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:45:28,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:28,850 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 81 proven. 64 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:45:28,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093481325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:28,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:28,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-28 03:45:28,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214779629] [2024-11-28 03:45:28,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:28,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:45:28,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:28,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:45:28,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:45:28,852 INFO L87 Difference]: Start difference. First operand 184 states and 192 transitions. Second operand has 32 states, 32 states have (on average 2.96875) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:29,104 INFO L93 Difference]: Finished difference Result 351 states and 367 transitions. [2024-11-28 03:45:29,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:45:29,105 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 183 [2024-11-28 03:45:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:29,107 INFO L225 Difference]: With dead ends: 351 [2024-11-28 03:45:29,107 INFO L226 Difference]: Without dead ends: 187 [2024-11-28 03:45:29,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 338 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:45:29,109 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:29,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 160 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:45:29,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-28 03:45:29,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2024-11-28 03:45:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.0486486486486486) internal successors, (194), 185 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 194 transitions. [2024-11-28 03:45:29,176 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 194 transitions. Word has length 183 [2024-11-28 03:45:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:29,176 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 194 transitions. [2024-11-28 03:45:29,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.96875) internal successors, (95), 32 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 194 transitions. [2024-11-28 03:45:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 03:45:29,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:29,177 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:29,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:45:29,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:45:29,378 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:29,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2001775138, now seen corresponding path program 27 times [2024-11-28 03:45:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646483900] [2024-11-28 03:45:29,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:29,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:29,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:45:29,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:50,170 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 17 proven. 648 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:45:50,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646483900] [2024-11-28 03:45:50,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646483900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:50,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912172395] [2024-11-28 03:45:50,170 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:50,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:50,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:50,173 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:50,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:45:50,595 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2024-11-28 03:45:50,595 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:50,603 WARN L254 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 318 conjuncts are in the unsatisfiable core [2024-11-28 03:45:50,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:50,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:50,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:45:50,696 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 1 [2024-11-28 03:45:54,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:45:54,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:45:54,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 18 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 74 treesize of output 113 [2024-11-28 03:45:54,379 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 17 proven. 648 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:45:54,379 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:59,408 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:45:59,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912172395] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:59,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:59,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 31, 29] total 86 [2024-11-28 03:45:59,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134548015] [2024-11-28 03:45:59,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:59,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-28 03:45:59,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:59,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-28 03:45:59,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=6944, Unknown=0, NotChecked=0, Total=7310 [2024-11-28 03:45:59,413 INFO L87 Difference]: Start difference. First operand 186 states and 194 transitions. Second operand has 86 states, 86 states have (on average 4.930232558139535) internal successors, (424), 86 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:10,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:10,114 INFO L93 Difference]: Finished difference Result 340 states and 355 transitions. [2024-11-28 03:46:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 03:46:10,115 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 4.930232558139535) internal successors, (424), 86 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2024-11-28 03:46:10,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:10,117 INFO L225 Difference]: With dead ends: 340 [2024-11-28 03:46:10,117 INFO L226 Difference]: Without dead ends: 336 [2024-11-28 03:46:10,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 360 SyntacticMatches, 30 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3979 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=636, Invalid=10284, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 03:46:10,118 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7049 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 7268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 7049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:10,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 157 Invalid, 7268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 7049 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-28 03:46:10,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-28 03:46:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 311. [2024-11-28 03:46:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.0516129032258064) internal successors, (326), 310 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:10,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 326 transitions. [2024-11-28 03:46:10,228 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 326 transitions. Word has length 185 [2024-11-28 03:46:10,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:10,229 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 326 transitions. [2024-11-28 03:46:10,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 4.930232558139535) internal successors, (424), 86 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:10,229 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 326 transitions. [2024-11-28 03:46:10,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 03:46:10,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:10,231 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:10,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:46:10,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:10,432 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:10,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:10,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1730867966, now seen corresponding path program 28 times [2024-11-28 03:46:10,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:10,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62827553] [2024-11-28 03:46:10,433 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:10,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:10,466 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:10,466 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:10,880 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:10,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62827553] [2024-11-28 03:46:10,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62827553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:10,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002288635] [2024-11-28 03:46:10,880 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:46:10,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:10,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:10,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:10,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:46:11,088 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:46:11,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:11,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:46:11,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:11,360 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:11,360 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 81 proven. 100 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:11,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002288635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:11,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:11,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-28 03:46:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998816365] [2024-11-28 03:46:11,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:11,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 03:46:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:11,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 03:46:11,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:46:11,672 INFO L87 Difference]: Start difference. First operand 311 states and 326 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:13,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:13,915 INFO L93 Difference]: Finished difference Result 473 states and 500 transitions. [2024-11-28 03:46:13,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:46:13,916 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-28 03:46:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:13,918 INFO L225 Difference]: With dead ends: 473 [2024-11-28 03:46:13,918 INFO L226 Difference]: Without dead ends: 349 [2024-11-28 03:46:13,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 343 SyntacticMatches, 21 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=659, Invalid=2203, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:46:13,919 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 221 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 3253 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 3446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:13,919 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 95 Invalid, 3446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3253 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:46:13,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-28 03:46:14,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 303. [2024-11-28 03:46:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.0496688741721854) internal successors, (317), 302 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:14,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 317 transitions. [2024-11-28 03:46:14,020 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 317 transitions. Word has length 187 [2024-11-28 03:46:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:14,020 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 317 transitions. [2024-11-28 03:46:14,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 317 transitions. [2024-11-28 03:46:14,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 03:46:14,021 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:14,021 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:14,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:14,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:14,222 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:14,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash 378219970, now seen corresponding path program 29 times [2024-11-28 03:46:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214942323] [2024-11-28 03:46:14,222 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:46:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:14,320 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:46:14,320 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:14,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214942323] [2024-11-28 03:46:14,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214942323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162085016] [2024-11-28 03:46:14,692 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:46:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:14,694 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:14,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:46:16,322 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2024-11-28 03:46:16,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:16,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:46:16,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:16,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 100 proven. 81 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2024-11-28 03:46:16,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162085016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:16,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:16,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 33 [2024-11-28 03:46:16,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197753220] [2024-11-28 03:46:16,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:16,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 03:46:16,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:16,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 03:46:16,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 03:46:16,891 INFO L87 Difference]: Start difference. First operand 303 states and 317 transitions. Second operand has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:17,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:17,870 INFO L93 Difference]: Finished difference Result 488 states and 509 transitions. [2024-11-28 03:46:17,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:46:17,871 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 187 [2024-11-28 03:46:17,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:17,873 INFO L225 Difference]: With dead ends: 488 [2024-11-28 03:46:17,873 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 03:46:17,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 354 SyntacticMatches, 20 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=458, Invalid=1348, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:46:17,874 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 558 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:17,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 67 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:46:17,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 03:46:17,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2024-11-28 03:46:17,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.044776119402985) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 210 transitions. [2024-11-28 03:46:17,949 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 210 transitions. Word has length 187 [2024-11-28 03:46:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:17,950 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 210 transitions. [2024-11-28 03:46:17,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.878787878787879) internal successors, (95), 33 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:17,950 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 210 transitions. [2024-11-28 03:46:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-28 03:46:17,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:17,951 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:17,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 03:46:18,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:18,152 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:18,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash 47207934, now seen corresponding path program 30 times [2024-11-28 03:46:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:18,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215018758] [2024-11-28 03:46:18,153 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:46:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:18,316 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:46:18,316 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:18,720 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 83 proven. 98 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2024-11-28 03:46:18,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:18,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215018758] [2024-11-28 03:46:18,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215018758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:18,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828213446] [2024-11-28 03:46:18,721 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:46:18,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:18,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:18,723 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:18,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:46:19,364 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2024-11-28 03:46:19,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:19,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:46:19,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 138 proven. 81 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-11-28 03:46:19,875 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 100 proven. 119 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2024-11-28 03:46:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828213446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:46:20,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:46:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 25, 25] total 39 [2024-11-28 03:46:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768659295] [2024-11-28 03:46:20,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:20,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:46:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:20,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:46:20,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1162, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:46:20,384 INFO L87 Difference]: Start difference. First operand 202 states and 210 transitions. Second operand has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 39 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:20,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:20,975 INFO L93 Difference]: Finished difference Result 385 states and 401 transitions. [2024-11-28 03:46:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:46:20,975 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 39 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2024-11-28 03:46:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:20,977 INFO L225 Difference]: With dead ends: 385 [2024-11-28 03:46:20,977 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 03:46:20,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 365 SyntacticMatches, 21 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=736, Invalid=2456, Unknown=0, NotChecked=0, Total=3192 [2024-11-28 03:46:20,978 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 40 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:20,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 80 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:46:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 03:46:21,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2024-11-28 03:46:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0443349753694582) internal successors, (212), 203 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 212 transitions. [2024-11-28 03:46:21,061 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 212 transitions. Word has length 201 [2024-11-28 03:46:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:21,061 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 212 transitions. [2024-11-28 03:46:21,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8974358974358974) internal successors, (113), 39 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:46:21,062 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 212 transitions. [2024-11-28 03:46:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 03:46:21,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:21,063 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:21,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:46:21,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:21,267 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:21,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1213785118, now seen corresponding path program 31 times [2024-11-28 03:46:21,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:21,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122472184] [2024-11-28 03:46:21,268 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:46:21,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:54,091 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 84 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:54,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:54,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122472184] [2024-11-28 03:46:54,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122472184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:54,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979032564] [2024-11-28 03:46:54,091 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:46:54,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:54,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:54,093 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:54,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:46:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:54,320 WARN L254 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 352 conjuncts are in the unsatisfiable core [2024-11-28 03:46:54,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:55,121 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 03:46:57,046 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:46:57,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:01,902 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 800 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:47:01,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979032564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:47:01,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:47:01,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 36, 25] total 124 [2024-11-28 03:47:01,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492074417] [2024-11-28 03:47:01,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:01,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-28 03:47:01,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:01,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-28 03:47:01,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=14622, Unknown=0, NotChecked=0, Total=15252 [2024-11-28 03:47:01,905 INFO L87 Difference]: Start difference. First operand 204 states and 212 transitions. Second operand has 124 states, 124 states have (on average 4.161290322580645) internal successors, (516), 124 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:27,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:27,931 INFO L93 Difference]: Finished difference Result 784 states and 829 transitions. [2024-11-28 03:47:27,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-28 03:47:27,932 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 4.161290322580645) internal successors, (516), 124 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-28 03:47:27,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:27,934 INFO L225 Difference]: With dead ends: 784 [2024-11-28 03:47:27,934 INFO L226 Difference]: Without dead ends: 564 [2024-11-28 03:47:27,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 599 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11568 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=2863, Invalid=41447, Unknown=0, NotChecked=0, Total=44310 [2024-11-28 03:47:27,936 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1343 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 16307 mSolverCounterSat, 1516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 17823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1516 IncrementalHoareTripleChecker+Valid, 16307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:27,936 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 382 Invalid, 17823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1516 Valid, 16307 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-28 03:47:27,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-28 03:47:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 435. [2024-11-28 03:47:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 1.0506912442396312) internal successors, (456), 434 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:28,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 456 transitions. [2024-11-28 03:47:28,094 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 456 transitions. Word has length 203 [2024-11-28 03:47:28,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:28,094 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 456 transitions. [2024-11-28 03:47:28,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 4.161290322580645) internal successors, (516), 124 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:28,095 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 456 transitions. [2024-11-28 03:47:28,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 03:47:28,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:28,096 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:28,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:47:28,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 03:47:28,297 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:28,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:28,298 INFO L85 PathProgramCache]: Analyzing trace with hash 121722346, now seen corresponding path program 32 times [2024-11-28 03:47:28,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:28,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229146014] [2024-11-28 03:47:28,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:47:28,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:28,332 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:47:28,332 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:47:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 81 proven. 140 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-28 03:47:28,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229146014] [2024-11-28 03:47:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229146014] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689675761] [2024-11-28 03:47:28,860 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:47:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:28,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:28,862 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:28,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:47:29,100 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:47:29,100 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:47:29,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 578 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:47:29,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-28 03:47:29,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 100 proven. 121 refuted. 0 times theorem prover too weak. 721 trivial. 0 not checked. [2024-11-28 03:47:29,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689675761] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:47:29,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:47:29,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-28 03:47:29,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869780482] [2024-11-28 03:47:29,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:29,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-28 03:47:29,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:47:29,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-28 03:47:29,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=1067, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:47:29,857 INFO L87 Difference]: Start difference. First operand 435 states and 456 transitions. Second operand has 38 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 38 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:30,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:30,712 INFO L93 Difference]: Finished difference Result 593 states and 626 transitions. [2024-11-28 03:47:30,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:47:30,713 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 38 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 207 [2024-11-28 03:47:30,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:30,715 INFO L225 Difference]: With dead ends: 593 [2024-11-28 03:47:30,715 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 03:47:30,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 379 SyntacticMatches, 22 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=369, Invalid=1191, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:47:30,717 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 348 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:30,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 84 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:47:30,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 03:47:30,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 222. [2024-11-28 03:47:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.0407239819004526) internal successors, (230), 221 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 230 transitions. [2024-11-28 03:47:30,818 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 230 transitions. Word has length 207 [2024-11-28 03:47:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:30,818 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 230 transitions. [2024-11-28 03:47:30,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 38 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:47:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 230 transitions. [2024-11-28 03:47:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-28 03:47:30,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:30,819 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:30,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:47:31,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 03:47:31,020 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:47:31,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1430230810, now seen corresponding path program 33 times [2024-11-28 03:47:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:47:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72928449] [2024-11-28 03:47:31,021 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:47:31,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:31,397 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:47:31,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:02,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 10 proven. 979 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:48:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72928449] [2024-11-28 03:48:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72928449] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:02,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417805246] [2024-11-28 03:48:02,218 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:48:02,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:02,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:02,223 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:02,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:48:02,879 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-28 03:48:02,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:02,888 WARN L254 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 385 conjuncts are in the unsatisfiable core [2024-11-28 03:48:02,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:03,010 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 1 [2024-11-28 03:48:11,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:48:11,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:48:11,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 30 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 72 treesize of output 135 [2024-11-28 03:48:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 21 proven. 968 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 03:48:11,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:21,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 0 proven. 1047 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:48:21,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417805246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:48:21,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:48:21,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 49, 45] total 140 [2024-11-28 03:48:21,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735548439] [2024-11-28 03:48:21,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:21,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-28 03:48:21,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:21,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-28 03:48:21,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1217, Invalid=18243, Unknown=0, NotChecked=0, Total=19460 [2024-11-28 03:48:21,116 INFO L87 Difference]: Start difference. First operand 222 states and 230 transitions. Second operand has 140 states, 140 states have (on average 4.2214285714285715) internal successors, (591), 140 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:53,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:53,363 INFO L93 Difference]: Finished difference Result 602 states and 655 transitions. [2024-11-28 03:48:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-28 03:48:53,363 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 4.2214285714285715) internal successors, (591), 140 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2024-11-28 03:48:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:53,366 INFO L225 Difference]: With dead ends: 602 [2024-11-28 03:48:53,366 INFO L226 Difference]: Without dead ends: 597 [2024-11-28 03:48:53,367 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 398 SyntacticMatches, 23 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13086 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=3313, Invalid=36887, Unknown=0, NotChecked=0, Total=40200 [2024-11-28 03:48:53,368 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 659 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 15637 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 16694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 15637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:53,368 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [659 Valid, 299 Invalid, 16694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1057 Valid, 15637 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2024-11-28 03:48:53,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2024-11-28 03:48:53,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 531. [2024-11-28 03:48:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.0981132075471698) internal successors, (582), 530 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:53,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 582 transitions. [2024-11-28 03:48:53,554 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 582 transitions. Word has length 221 [2024-11-28 03:48:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:53,554 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 582 transitions. [2024-11-28 03:48:53,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 4.2214285714285715) internal successors, (591), 140 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 582 transitions. [2024-11-28 03:48:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-28 03:48:53,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:53,556 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:53,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:48:53,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 03:48:53,756 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:53,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash -744030710, now seen corresponding path program 34 times [2024-11-28 03:48:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037517244] [2024-11-28 03:48:53,757 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:48:53,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:53,811 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:48:53,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:48:54,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037517244] [2024-11-28 03:48:54,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037517244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:54,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627443125] [2024-11-28 03:48:54,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:48:54,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:54,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:54,397 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:54,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:48:54,640 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:48:54,640 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:54,643 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:48:54,646 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:48:55,065 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:55,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 121 proven. 144 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:48:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627443125] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:48:55,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:48:55,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-28 03:48:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804655301] [2024-11-28 03:48:55,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:55,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:48:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:55,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:48:55,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:48:55,509 INFO L87 Difference]: Start difference. First operand 531 states and 582 transitions. Second operand has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:48:58,170 INFO L93 Difference]: Finished difference Result 936 states and 1027 transitions. [2024-11-28 03:48:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 03:48:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-28 03:48:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:48:58,173 INFO L225 Difference]: With dead ends: 936 [2024-11-28 03:48:58,173 INFO L226 Difference]: Without dead ends: 599 [2024-11-28 03:48:58,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 409 SyntacticMatches, 25 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=909, Invalid=3123, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:48:58,175 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 325 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2913 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 3247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 2913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:48:58,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 77 Invalid, 3247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 2913 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:48:58,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2024-11-28 03:48:58,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 359. [2024-11-28 03:48:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.041899441340782) internal successors, (373), 358 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 373 transitions. [2024-11-28 03:48:58,343 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 373 transitions. Word has length 223 [2024-11-28 03:48:58,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:48:58,344 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 373 transitions. [2024-11-28 03:48:58,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:48:58,344 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 373 transitions. [2024-11-28 03:48:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-28 03:48:58,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:48:58,345 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:48:58,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:48:58,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 03:48:58,546 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:48:58,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:48:58,547 INFO L85 PathProgramCache]: Analyzing trace with hash -123494710, now seen corresponding path program 35 times [2024-11-28 03:48:58,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:48:58,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559690613] [2024-11-28 03:48:58,547 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:48:58,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:48:58,785 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:48:58,786 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:48:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:48:59,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:48:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559690613] [2024-11-28 03:48:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559690613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274112816] [2024-11-28 03:48:59,455 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:48:59,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:48:59,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:48:59,457 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:48:59,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:49:05,205 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-28 03:49:05,206 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:49:05,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:49:05,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:49:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:49:05,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:49:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2024-11-28 03:49:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274112816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:49:06,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:49:06,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 39 [2024-11-28 03:49:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246895673] [2024-11-28 03:49:06,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:49:06,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:49:06,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:49:06,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:49:06,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 03:49:06,415 INFO L87 Difference]: Start difference. First operand 359 states and 373 transitions. Second operand has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:49:08,102 INFO L93 Difference]: Finished difference Result 576 states and 597 transitions. [2024-11-28 03:49:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:49:08,102 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2024-11-28 03:49:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:49:08,105 INFO L225 Difference]: With dead ends: 576 [2024-11-28 03:49:08,105 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 03:49:08,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 422 SyntacticMatches, 24 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=633, Invalid=1917, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 03:49:08,108 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 563 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 563 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 2131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:49:08,108 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [563 Valid, 79 Invalid, 2131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 1526 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:49:08,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 03:49:08,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 238. [2024-11-28 03:49:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 237 states have (on average 1.0379746835443038) internal successors, (246), 237 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:08,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 246 transitions. [2024-11-28 03:49:08,283 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 246 transitions. Word has length 223 [2024-11-28 03:49:08,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:49:08,284 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 246 transitions. [2024-11-28 03:49:08,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.7435897435897436) internal successors, (107), 39 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:08,284 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 246 transitions. [2024-11-28 03:49:08,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 03:49:08,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:49:08,286 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:49:08,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-28 03:49:08,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 03:49:08,487 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:49:08,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:49:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -939075322, now seen corresponding path program 36 times [2024-11-28 03:49:08,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:49:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933614055] [2024-11-28 03:49:08,488 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:49:08,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:49:08,884 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:49:08,884 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:49:09,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 123 proven. 142 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2024-11-28 03:49:09,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:49:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933614055] [2024-11-28 03:49:09,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933614055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:49:09,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040619894] [2024-11-28 03:49:09,708 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:49:09,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:49:09,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:49:09,711 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:49:09,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:49:10,504 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-28 03:49:10,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:49:10,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:49:10,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:49:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 144 proven. 121 refuted. 0 times theorem prover too weak. 1008 trivial. 0 not checked. [2024-11-28 03:49:11,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:49:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 144 proven. 213 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2024-11-28 03:49:11,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040619894] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:49:11,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:49:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 29] total 43 [2024-11-28 03:49:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397428308] [2024-11-28 03:49:11,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:49:11,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 03:49:11,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:49:11,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 03:49:11,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=1419, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:49:11,446 INFO L87 Difference]: Start difference. First operand 238 states and 246 transitions. Second operand has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:49:12,171 INFO L93 Difference]: Finished difference Result 453 states and 469 transitions. [2024-11-28 03:49:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:49:12,172 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2024-11-28 03:49:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:49:12,174 INFO L225 Difference]: With dead ends: 453 [2024-11-28 03:49:12,174 INFO L226 Difference]: Without dead ends: 241 [2024-11-28 03:49:12,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 435 SyntacticMatches, 23 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=609, Invalid=2253, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:49:12,175 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:49:12,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 214 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:49:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-28 03:49:12,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 240. [2024-11-28 03:49:12,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.0376569037656904) internal successors, (248), 239 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 248 transitions. [2024-11-28 03:49:12,294 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 248 transitions. Word has length 237 [2024-11-28 03:49:12,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:49:12,295 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 248 transitions. [2024-11-28 03:49:12,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 43 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:49:12,295 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 248 transitions. [2024-11-28 03:49:12,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-28 03:49:12,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:49:12,297 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:49:12,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:49:12,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-28 03:49:12,497 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:49:12,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:49:12,498 INFO L85 PathProgramCache]: Analyzing trace with hash -250118934, now seen corresponding path program 37 times [2024-11-28 03:49:12,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:49:12,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831944841] [2024-11-28 03:49:12,498 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:49:12,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:49:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:06,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 162 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:06,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831944841] [2024-11-28 03:50:06,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831944841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:50:06,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547493234] [2024-11-28 03:50:06,164 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:50:06,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:06,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:50:06,166 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:50:06,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:50:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:06,483 WARN L254 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 420 conjuncts are in the unsatisfiable core [2024-11-28 03:50:06,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:50:07,556 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 03:50:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1296 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:50:09,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:50:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 03:50:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547493234] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:50:16,813 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:50:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 42, 29] total 144 [2024-11-28 03:50:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572025425] [2024-11-28 03:50:16,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:50:16,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2024-11-28 03:50:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:16,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2024-11-28 03:50:16,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=909, Invalid=19683, Unknown=0, NotChecked=0, Total=20592 [2024-11-28 03:50:16,816 INFO L87 Difference]: Start difference. First operand 240 states and 248 transitions. Second operand has 144 states, 144 states have (on average 4.194444444444445) internal successors, (604), 144 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:47,996 INFO L93 Difference]: Finished difference Result 906 states and 948 transitions. [2024-11-28 03:50:47,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2024-11-28 03:50:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 144 states have (on average 4.194444444444445) internal successors, (604), 144 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2024-11-28 03:50:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:47,999 INFO L225 Difference]: With dead ends: 906 [2024-11-28 03:50:47,999 INFO L226 Difference]: Without dead ends: 654 [2024-11-28 03:50:48,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 682 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14351 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=2768, Invalid=47184, Unknown=0, NotChecked=0, Total=49952 [2024-11-28 03:50:48,002 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 1423 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 19106 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 20716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 19106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:48,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 393 Invalid, 20716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1610 Valid, 19106 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2024-11-28 03:50:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-28 03:50:48,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 511. [2024-11-28 03:50:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.0431372549019609) internal successors, (532), 510 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:48,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 532 transitions. [2024-11-28 03:50:48,267 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 532 transitions. Word has length 239 [2024-11-28 03:50:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:48,267 INFO L471 AbstractCegarLoop]: Abstraction has 511 states and 532 transitions. [2024-11-28 03:50:48,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 144 states have (on average 4.194444444444445) internal successors, (604), 144 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:48,267 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 532 transitions. [2024-11-28 03:50:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 03:50:48,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:48,270 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:48,284 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 03:50:48,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 03:50:48,470 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:48,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash -384699662, now seen corresponding path program 38 times [2024-11-28 03:50:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:48,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410514239] [2024-11-28 03:50:48,471 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:50:48,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:48,525 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:50:48,525 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:50:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 121 proven. 192 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2024-11-28 03:50:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:50:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410514239] [2024-11-28 03:50:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410514239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:50:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337417318] [2024-11-28 03:50:49,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:50:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:50:49,275 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:50:49,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:50:49,562 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:50:49,562 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:50:49,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:50:49,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:50:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2024-11-28 03:50:50,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:50:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1346 backedges. 144 proven. 169 refuted. 0 times theorem prover too weak. 1033 trivial. 0 not checked. [2024-11-28 03:50:50,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337417318] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:50:50,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:50:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-28 03:50:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007130321] [2024-11-28 03:50:50,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:50:50,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:50:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:50:50,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:50:50,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=451, Invalid=1441, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:50:50,556 INFO L87 Difference]: Start difference. First operand 511 states and 532 transitions. Second operand has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:51,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:50:51,554 INFO L93 Difference]: Finished difference Result 695 states and 729 transitions. [2024-11-28 03:50:51,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:50:51,554 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 243 [2024-11-28 03:50:51,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:50:51,556 INFO L225 Difference]: With dead ends: 695 [2024-11-28 03:50:51,556 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 03:50:51,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 445 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1399 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:50:51,557 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 398 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:50:51,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 59 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:50:51,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 03:50:51,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 258. [2024-11-28 03:50:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.0350194552529184) internal successors, (266), 257 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:51,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 266 transitions. [2024-11-28 03:50:51,666 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 266 transitions. Word has length 243 [2024-11-28 03:50:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:50:51,667 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 266 transitions. [2024-11-28 03:50:51,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.7045454545454546) internal successors, (119), 44 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:50:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 266 transitions. [2024-11-28 03:50:51,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2024-11-28 03:50:51,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:50:51,668 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:50:51,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-28 03:50:51,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:50:51,868 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:50:51,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:50:51,869 INFO L85 PathProgramCache]: Analyzing trace with hash -549939218, now seen corresponding path program 39 times [2024-11-28 03:50:51,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:50:51,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392317727] [2024-11-28 03:50:51,869 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:50:51,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:50:52,299 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 03:50:52,299 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:51:34,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 12 proven. 1365 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 03:51:34,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:51:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392317727] [2024-11-28 03:51:34,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392317727] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:51:34,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914699527] [2024-11-28 03:51:34,555 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:51:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:51:34,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:51:34,557 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:51:34,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fc2f482-025e-4d03-9797-faf9c5b23c31/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:51:35,273 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2024-11-28 03:51:35,273 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:51:35,286 WARN L254 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 462 conjuncts are in the unsatisfiable core [2024-11-28 03:51:35,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:51:35,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:51:35,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:51:35,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:51:35,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:51:35,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 03:51:35,434 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 1 [2024-11-28 03:51:47,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:51:47,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:51:47,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 45 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 86 treesize of output 185 [2024-11-28 03:51:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 25 proven. 1352 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 03:51:48,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:52:32,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1521 backedges. 0 proven. 1465 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 03:52:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914699527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:52:32,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:52:32,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 76, 123] total 234 [2024-11-28 03:52:32,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477344124] [2024-11-28 03:52:32,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:52:32,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 234 states [2024-11-28 03:52:32,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:52:32,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 234 interpolants. [2024-11-28 03:52:32,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3470, Invalid=51052, Unknown=0, NotChecked=0, Total=54522 [2024-11-28 03:52:32,828 INFO L87 Difference]: Start difference. First operand 258 states and 266 transitions. Second operand has 234 states, 234 states have (on average 2.9358974358974357) internal successors, (687), 234 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:52:47,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:52:57,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:10,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:19,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:27,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:40,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:45,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:50,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:53:54,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:08,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:15,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:19,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:30,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:34,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:45,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:52,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:54:58,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:55:53,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]