./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/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_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:15:28,430 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:15:28,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:15:28,593 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:15:28,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:15:28,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:15:28,658 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:15:28,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:15:28,659 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:15:28,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:15:28,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:15:28,662 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:15:28,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:15:28,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:15:28,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:15:28,663 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:15:28,664 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:15:28,665 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:15:28,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:28,665 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:28,665 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:28,665 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:28,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:15:28,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:15:28,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:15:28,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:15:28,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:28,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:15:28,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:15:28,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:15:28,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:15:28,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:15:28,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:15:28,668 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:15:28,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:15:28,669 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_9f516f94-ba5e-414c-b07c-5a33d085b634/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2024-11-28 03:15:29,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:15:29,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:15:29,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:15:29,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:15:29,260 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:15:29,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/forester-heap/sll-01-1.i [2024-11-28 03:15:33,618 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/4893453cd/adbc7de90afa458e98bb1a1a23641d1a/FLAG115449466 [2024-11-28 03:15:34,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:15:34,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/sv-benchmarks/c/forester-heap/sll-01-1.i [2024-11-28 03:15:34,183 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/4893453cd/adbc7de90afa458e98bb1a1a23641d1a/FLAG115449466 [2024-11-28 03:15:34,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/4893453cd/adbc7de90afa458e98bb1a1a23641d1a [2024-11-28 03:15:34,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:15:34,212 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:15:34,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:34,214 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:15:34,221 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:15:34,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:34,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773fb69d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34, skipping insertion in model container [2024-11-28 03:15:34,225 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:34,276 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:15:34,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:34,809 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:15:34,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:15:34,947 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:15:34,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34 WrapperNode [2024-11-28 03:15:34,948 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:15:34,949 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:34,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:15:34,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:15:34,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,063 INFO L138 Inliner]: procedures = 119, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 213 [2024-11-28 03:15:35,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:15:35,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:15:35,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:15:35,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:15:35,088 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,088 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,096 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,138 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 11 writes are split as follows [0, 11]. [2024-11-28 03:15:35,139 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,143 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,172 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:15:35,178 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:15:35,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:15:35,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:15:35,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (1/1) ... [2024-11-28 03:15:35,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:15:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:35,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:15:35,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:15:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 03:15:35,287 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 03:15:35,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:15:35,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:15:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:15:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:15:35,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:15:35,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:15:35,496 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:15:35,501 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:15:36,669 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2024-11-28 03:15:36,670 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:15:36,708 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:15:36,708 INFO L312 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-28 03:15:36,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:36 BoogieIcfgContainer [2024-11-28 03:15:36,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:15:36,735 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:15:36,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:15:36,747 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:15:36,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:15:34" (1/3) ... [2024-11-28 03:15:36,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f41967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:36, skipping insertion in model container [2024-11-28 03:15:36,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:15:34" (2/3) ... [2024-11-28 03:15:36,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f41967e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:15:36, skipping insertion in model container [2024-11-28 03:15:36,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:15:36" (3/3) ... [2024-11-28 03:15:36,755 INFO L128 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2024-11-28 03:15:36,776 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:15:36,778 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-01-1.i that has 2 procedures, 197 locations, 1 initial locations, 17 loop locations, and 66 error locations. [2024-11-28 03:15:36,856 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:15:36,883 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=None, 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;@27c31e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:15:36,883 INFO L334 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2024-11-28 03:15:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 116 states have (on average 2.0344827586206895) internal successors, (236), 182 states have internal predecessors, (236), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:15:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:15:36,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:36,901 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:15:36,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:36,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2024-11-28 03:15:36,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:36,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118246771] [2024-11-28 03:15:36,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:36,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:37,243 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 03:15:37,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118246771] [2024-11-28 03:15:37,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118246771] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:37,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:37,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:37,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346943397] [2024-11-28 03:15:37,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:37,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:37,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:37,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:37,298 INFO L87 Difference]: Start difference. First operand has 197 states, 116 states have (on average 2.0344827586206895) internal successors, (236), 182 states have internal predecessors, (236), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:37,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:37,725 INFO L93 Difference]: Finished difference Result 177 states and 201 transitions. [2024-11-28 03:15:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:37,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-28 03:15:37,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:37,740 INFO L225 Difference]: With dead ends: 177 [2024-11-28 03:15:37,740 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 03:15:37,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:15:37,750 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 156 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:37,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 127 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:15:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 03:15:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-28 03:15:37,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 104 states have (on average 1.7884615384615385) internal successors, (186), 173 states have internal predecessors, (186), 13 states have call successors, (13), 1 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:37,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-28 03:15:37,808 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 3 [2024-11-28 03:15:37,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:37,808 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-28 03:15:37,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:37,809 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-28 03:15:37,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:15:37,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:37,809 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:15:37,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:15:37,810 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:37,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:37,815 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2024-11-28 03:15:37,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:37,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451661269] [2024-11-28 03:15:37,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:37,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:37,992 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 03:15:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:37,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451661269] [2024-11-28 03:15:37,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451661269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:37,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:37,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:15:37,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347755277] [2024-11-28 03:15:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:37,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:37,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:37,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:37,998 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:38,358 INFO L93 Difference]: Finished difference Result 195 states and 223 transitions. [2024-11-28 03:15:38,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:38,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-28 03:15:38,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:38,364 INFO L225 Difference]: With dead ends: 195 [2024-11-28 03:15:38,365 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:15:38,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:15:38,367 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 154 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:38,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 151 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:38,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:15:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2024-11-28 03:15:38,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 121 states have (on average 1.7107438016528926) internal successors, (207), 183 states have internal predecessors, (207), 13 states have call successors, (13), 1 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 220 transitions. [2024-11-28 03:15:38,387 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 220 transitions. Word has length 3 [2024-11-28 03:15:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:38,388 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 220 transitions. [2024-11-28 03:15:38,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 220 transitions. [2024-11-28 03:15:38,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:15:38,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:38,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:38,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:15:38,390 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:38,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1467462287, now seen corresponding path program 1 times [2024-11-28 03:15:38,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:38,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142735271] [2024-11-28 03:15:38,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:38,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:38,509 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 03:15:38,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:38,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142735271] [2024-11-28 03:15:38,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142735271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:38,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:38,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:38,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15478345] [2024-11-28 03:15:38,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:38,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:38,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:38,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:38,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:38,512 INFO L87 Difference]: Start difference. First operand 185 states and 220 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:38,628 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2024-11-28 03:15:38,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:38,629 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:15:38,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:38,631 INFO L225 Difference]: With dead ends: 196 [2024-11-28 03:15:38,631 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 03:15:38,632 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 03:15:38,637 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 157 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:38,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 211 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:15:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 03:15:38,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2024-11-28 03:15:38,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 121 states have (on average 1.6942148760330578) internal successors, (205), 182 states have internal predecessors, (205), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2024-11-28 03:15:38,669 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 7 [2024-11-28 03:15:38,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:38,669 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2024-11-28 03:15:38,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:38,670 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2024-11-28 03:15:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:15:38,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:38,671 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:38,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:15:38,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:38,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:38,672 INFO L85 PathProgramCache]: Analyzing trace with hash -463705026, now seen corresponding path program 1 times [2024-11-28 03:15:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:38,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610327488] [2024-11-28 03:15:38,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:38,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:39,209 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 03:15:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:39,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610327488] [2024-11-28 03:15:39,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610327488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:39,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:39,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628005097] [2024-11-28 03:15:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:39,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:39,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:39,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:39,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:39,213 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:39,603 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-28 03:15:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:39,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:15:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:39,607 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:15:39,607 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:15:39,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:39,609 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:39,609 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 534 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:39,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:15:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-28 03:15:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 181 states have internal predecessors, (204), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2024-11-28 03:15:39,634 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 11 [2024-11-28 03:15:39,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:39,635 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2024-11-28 03:15:39,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:39,636 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2024-11-28 03:15:39,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:15:39,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:39,640 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:39,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:15:39,641 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:39,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:39,642 INFO L85 PathProgramCache]: Analyzing trace with hash -463705025, now seen corresponding path program 1 times [2024-11-28 03:15:39,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:39,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 03:15:39,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:39,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:40,265 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 03:15:40,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:40,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 03:15:40,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035156914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:40,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:40,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:40,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417145542] [2024-11-28 03:15:40,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:40,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:40,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:40,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:40,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:40,268 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:40,646 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2024-11-28 03:15:40,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:40,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:15:40,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:40,648 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:15:40,648 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:15:40,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:40,650 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 1 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:40,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 545 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:40,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:15:40,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:15:40,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 121 states have (on average 1.677685950413223) internal successors, (203), 180 states have internal predecessors, (203), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2024-11-28 03:15:40,660 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 11 [2024-11-28 03:15:40,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:40,660 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2024-11-28 03:15:40,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2024-11-28 03:15:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:15:40,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:40,661 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:40,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:15:40,661 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:40,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash 981250330, now seen corresponding path program 1 times [2024-11-28 03:15:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:40,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699899647] [2024-11-28 03:15:40,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:40,726 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 03:15:40,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:40,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699899647] [2024-11-28 03:15:40,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699899647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:40,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:40,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:40,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905014505] [2024-11-28 03:15:40,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:40,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:40,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:40,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:40,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:40,728 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:40,758 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-28 03:15:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:15:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:40,765 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:15:40,765 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:15:40,765 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 03:15:40,769 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:40,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:15:40,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:15:40,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-28 03:15:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 122 states have (on average 1.6721311475409837) internal successors, (204), 181 states have internal predecessors, (204), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2024-11-28 03:15:40,782 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 15 [2024-11-28 03:15:40,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:40,782 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2024-11-28 03:15:40,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:40,782 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2024-11-28 03:15:40,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:15:40,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:40,783 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:40,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:15:40,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:40,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1621581763, now seen corresponding path program 1 times [2024-11-28 03:15:40,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:40,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302627254] [2024-11-28 03:15:40,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:40,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:41,206 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 03:15:41,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302627254] [2024-11-28 03:15:41,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302627254] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:41,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:41,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:41,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995061427] [2024-11-28 03:15:41,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:41,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:41,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:41,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:41,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:41,212 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:41,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:41,905 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2024-11-28 03:15:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:15:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 03:15:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:41,908 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:15:41,908 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:15:41,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:15:41,910 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 154 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:41,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 423 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:15:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:15:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:15:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 122 states have (on average 1.6639344262295082) internal successors, (203), 180 states have internal predecessors, (203), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2024-11-28 03:15:41,921 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 14 [2024-11-28 03:15:41,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:41,921 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2024-11-28 03:15:41,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:41,925 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2024-11-28 03:15:41,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:15:41,926 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:41,926 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:41,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:15:41,926 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:41,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:41,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1621581762, now seen corresponding path program 1 times [2024-11-28 03:15:41,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:41,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857264621] [2024-11-28 03:15:41,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:41,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:42,618 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 03:15:42,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:42,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857264621] [2024-11-28 03:15:42,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857264621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:42,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:42,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009430197] [2024-11-28 03:15:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:42,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:42,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:42,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:42,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:42,623 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:43,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:43,482 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2024-11-28 03:15:43,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:15:43,484 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 03:15:43,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:43,485 INFO L225 Difference]: With dead ends: 181 [2024-11-28 03:15:43,485 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 03:15:43,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:15:43,487 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 151 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:43,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 501 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:15:43,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 03:15:43,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-28 03:15:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 122 states have (on average 1.6557377049180328) internal successors, (202), 179 states have internal predecessors, (202), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:43,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 214 transitions. [2024-11-28 03:15:43,498 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 214 transitions. Word has length 14 [2024-11-28 03:15:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:43,498 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 214 transitions. [2024-11-28 03:15:43,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 214 transitions. [2024-11-28 03:15:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:15:43,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:43,500 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:43,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:15:43,501 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:43,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:43,502 INFO L85 PathProgramCache]: Analyzing trace with hash -701450337, now seen corresponding path program 1 times [2024-11-28 03:15:43,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:43,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669591205] [2024-11-28 03:15:43,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:43,769 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 03:15:43,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:43,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669591205] [2024-11-28 03:15:43,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669591205] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:43,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:43,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:43,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038878567] [2024-11-28 03:15:43,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:43,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:15:43,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:43,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:15:43,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:15:43,773 INFO L87 Difference]: Start difference. First operand 181 states and 214 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:44,132 INFO L93 Difference]: Finished difference Result 259 states and 306 transitions. [2024-11-28 03:15:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:15:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 03:15:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:44,134 INFO L225 Difference]: With dead ends: 259 [2024-11-28 03:15:44,135 INFO L226 Difference]: Without dead ends: 259 [2024-11-28 03:15:44,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:15:44,135 INFO L435 NwaCegarLoop]: 158 mSDtfsCounter, 164 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:44,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 625 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-28 03:15:44,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 179. [2024-11-28 03:15:44,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 121 states have (on average 1.6528925619834711) internal successors, (200), 177 states have internal predecessors, (200), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 211 transitions. [2024-11-28 03:15:44,148 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 211 transitions. Word has length 17 [2024-11-28 03:15:44,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:44,149 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 211 transitions. [2024-11-28 03:15:44,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,149 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 211 transitions. [2024-11-28 03:15:44,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 03:15:44,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:44,150 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:44,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:15:44,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:44,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2115416272, now seen corresponding path program 1 times [2024-11-28 03:15:44,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:44,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091177061] [2024-11-28 03:15:44,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:44,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:44,356 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 03:15:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091177061] [2024-11-28 03:15:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091177061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:44,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:15:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428901156] [2024-11-28 03:15:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:44,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:44,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:44,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:44,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:44,358 INFO L87 Difference]: Start difference. First operand 179 states and 211 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:44,624 INFO L93 Difference]: Finished difference Result 260 states and 306 transitions. [2024-11-28 03:15:44,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 03:15:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:44,626 INFO L225 Difference]: With dead ends: 260 [2024-11-28 03:15:44,627 INFO L226 Difference]: Without dead ends: 260 [2024-11-28 03:15:44,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:15:44,628 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 83 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:44,628 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 597 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:15:44,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-28 03:15:44,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 182. [2024-11-28 03:15:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 124 states have (on average 1.6370967741935485) internal successors, (203), 180 states have internal predecessors, (203), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2024-11-28 03:15:44,648 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 18 [2024-11-28 03:15:44,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:44,648 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2024-11-28 03:15:44,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:44,649 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2024-11-28 03:15:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:15:44,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:44,650 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] [2024-11-28 03:15:44,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:15:44,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:44,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:44,652 INFO L85 PathProgramCache]: Analyzing trace with hash -656842709, now seen corresponding path program 1 times [2024-11-28 03:15:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:44,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661409489] [2024-11-28 03:15:44,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:44,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:44,823 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 03:15:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:44,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661409489] [2024-11-28 03:15:44,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661409489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:44,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:44,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:44,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809628484] [2024-11-28 03:15:44,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:44,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:44,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:44,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:44,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:44,828 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:45,115 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2024-11-28 03:15:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:15:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:15:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:45,117 INFO L225 Difference]: With dead ends: 174 [2024-11-28 03:15:45,117 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 03:15:45,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:45,118 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 207 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:45,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 121 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:45,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 03:15:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-28 03:15:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 172 states have internal predecessors, (195), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2024-11-28 03:15:45,130 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 20 [2024-11-28 03:15:45,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:45,130 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2024-11-28 03:15:45,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,131 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2024-11-28 03:15:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:15:45,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:45,131 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] [2024-11-28 03:15:45,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:15:45,132 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:45,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:45,134 INFO L85 PathProgramCache]: Analyzing trace with hash -656842708, now seen corresponding path program 1 times [2024-11-28 03:15:45,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:45,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273153744] [2024-11-28 03:15:45,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:45,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:45,362 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 03:15:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273153744] [2024-11-28 03:15:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273153744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:45,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:45,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:45,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544758424] [2024-11-28 03:15:45,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:45,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:45,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:45,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:45,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:45,364 INFO L87 Difference]: Start difference. First operand 174 states and 206 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:45,692 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2024-11-28 03:15:45,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:15:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:15:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:45,694 INFO L225 Difference]: With dead ends: 215 [2024-11-28 03:15:45,694 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 03:15:45,695 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:45,697 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 199 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:45,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 200 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:45,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 03:15:45,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 196. [2024-11-28 03:15:45,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.5369127516778522) internal successors, (229), 194 states have internal predecessors, (229), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2024-11-28 03:15:45,712 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 20 [2024-11-28 03:15:45,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:45,712 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2024-11-28 03:15:45,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:45,713 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2024-11-28 03:15:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:15:45,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:45,715 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 03:15:45,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:15:45,715 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:45,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:45,717 INFO L85 PathProgramCache]: Analyzing trace with hash 37329395, now seen corresponding path program 1 times [2024-11-28 03:15:45,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:45,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051134176] [2024-11-28 03:15:45,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:45,796 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 03:15:45,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:45,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051134176] [2024-11-28 03:15:45,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051134176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:45,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:45,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:45,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15552503] [2024-11-28 03:15:45,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:45,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:45,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:45,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:45,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:45,800 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:46,011 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2024-11-28 03:15:46,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:15:46,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:15:46,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:46,013 INFO L225 Difference]: With dead ends: 216 [2024-11-28 03:15:46,013 INFO L226 Difference]: Without dead ends: 216 [2024-11-28 03:15:46,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:46,014 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 200 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:46,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 281 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:15:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-28 03:15:46,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 195. [2024-11-28 03:15:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.523489932885906) internal successors, (227), 193 states have internal predecessors, (227), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 237 transitions. [2024-11-28 03:15:46,032 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 237 transitions. Word has length 23 [2024-11-28 03:15:46,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:46,032 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 237 transitions. [2024-11-28 03:15:46,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,033 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 237 transitions. [2024-11-28 03:15:46,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:15:46,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:46,034 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] [2024-11-28 03:15:46,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:15:46,034 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:46,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:46,035 INFO L85 PathProgramCache]: Analyzing trace with hash 263021357, now seen corresponding path program 1 times [2024-11-28 03:15:46,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:46,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972419933] [2024-11-28 03:15:46,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:46,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:46,271 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 03:15:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:46,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972419933] [2024-11-28 03:15:46,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972419933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:46,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:15:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525806380] [2024-11-28 03:15:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:46,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:46,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:46,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:46,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:46,274 INFO L87 Difference]: Start difference. First operand 195 states and 237 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:46,754 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2024-11-28 03:15:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:15:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 03:15:46,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:46,756 INFO L225 Difference]: With dead ends: 195 [2024-11-28 03:15:46,757 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:15:46,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:46,758 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 73 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:46,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 424 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:15:46,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:15:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-11-28 03:15:46,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 149 states have (on average 1.516778523489933) internal successors, (226), 192 states have internal predecessors, (226), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2024-11-28 03:15:46,767 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 24 [2024-11-28 03:15:46,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:46,767 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2024-11-28 03:15:46,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:46,768 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2024-11-28 03:15:46,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:15:46,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:46,769 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] [2024-11-28 03:15:46,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:15:46,769 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:46,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash 263021358, now seen corresponding path program 1 times [2024-11-28 03:15:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:46,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911087315] [2024-11-28 03:15:46,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:46,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:47,110 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 03:15:47,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:47,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911087315] [2024-11-28 03:15:47,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911087315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:47,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:47,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:15:47,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596846358] [2024-11-28 03:15:47,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:47,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:47,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:47,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:47,112 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:47,590 INFO L93 Difference]: Finished difference Result 186 states and 228 transitions. [2024-11-28 03:15:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:15:47,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 03:15:47,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:47,592 INFO L225 Difference]: With dead ends: 186 [2024-11-28 03:15:47,592 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 03:15:47,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:47,593 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 36 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:47,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 503 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:15:47,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 03:15:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2024-11-28 03:15:47,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 143 states have (on average 1.4685314685314685) internal successors, (210), 177 states have internal predecessors, (210), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:47,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 220 transitions. [2024-11-28 03:15:47,611 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 220 transitions. Word has length 24 [2024-11-28 03:15:47,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:47,614 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 220 transitions. [2024-11-28 03:15:47,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:47,615 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 220 transitions. [2024-11-28 03:15:47,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:15:47,616 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:47,616 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] [2024-11-28 03:15:47,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:15:47,616 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:47,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:47,617 INFO L85 PathProgramCache]: Analyzing trace with hash -420525490, now seen corresponding path program 1 times [2024-11-28 03:15:47,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:47,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007552081] [2024-11-28 03:15:47,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:47,785 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 03:15:47,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:47,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007552081] [2024-11-28 03:15:47,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007552081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:47,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:47,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:15:47,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247116585] [2024-11-28 03:15:47,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:47,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:47,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:47,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:47,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:47,788 INFO L87 Difference]: Start difference. First operand 179 states and 220 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:48,009 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2024-11-28 03:15:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:15:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-28 03:15:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:48,011 INFO L225 Difference]: With dead ends: 184 [2024-11-28 03:15:48,011 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 03:15:48,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:48,013 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 35 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:48,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 617 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:15:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 03:15:48,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2024-11-28 03:15:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 143 states have (on average 1.4545454545454546) internal successors, (208), 175 states have internal predecessors, (208), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 216 transitions. [2024-11-28 03:15:48,022 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 216 transitions. Word has length 28 [2024-11-28 03:15:48,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:48,022 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 216 transitions. [2024-11-28 03:15:48,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,023 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 216 transitions. [2024-11-28 03:15:48,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:15:48,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:48,024 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] [2024-11-28 03:15:48,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:15:48,024 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:48,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:48,025 INFO L85 PathProgramCache]: Analyzing trace with hash -675665190, now seen corresponding path program 1 times [2024-11-28 03:15:48,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:48,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744963807] [2024-11-28 03:15:48,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:48,112 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 03:15:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744963807] [2024-11-28 03:15:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744963807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:48,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383817115] [2024-11-28 03:15:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:48,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:48,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:48,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:48,114 INFO L87 Difference]: Start difference. First operand 177 states and 216 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:48,137 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2024-11-28 03:15:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:15:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:48,140 INFO L225 Difference]: With dead ends: 189 [2024-11-28 03:15:48,140 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 03:15:48,140 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 03:15:48,141 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 7 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:48,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 289 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:15:48,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 03:15:48,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2024-11-28 03:15:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 149 states have (on average 1.4496644295302012) internal successors, (216), 181 states have internal predecessors, (216), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2024-11-28 03:15:48,155 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 30 [2024-11-28 03:15:48,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:48,156 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2024-11-28 03:15:48,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,156 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2024-11-28 03:15:48,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:15:48,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:48,160 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] [2024-11-28 03:15:48,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:15:48,160 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:48,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:48,161 INFO L85 PathProgramCache]: Analyzing trace with hash 393950009, now seen corresponding path program 1 times [2024-11-28 03:15:48,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:48,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503503123] [2024-11-28 03:15:48,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:48,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:48,237 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 03:15:48,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503503123] [2024-11-28 03:15:48,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503503123] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:48,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:48,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:48,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872647556] [2024-11-28 03:15:48,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:48,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:48,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:48,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:48,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:48,240 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:48,296 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2024-11-28 03:15:48,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:48,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 03:15:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:48,301 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:15:48,302 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:15:48,302 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 03:15:48,303 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 11 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:48,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 263 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:15:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:15:48,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:15:48,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 149 states have (on average 1.436241610738255) internal successors, (214), 180 states have internal predecessors, (214), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 221 transitions. [2024-11-28 03:15:48,329 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 221 transitions. Word has length 31 [2024-11-28 03:15:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:48,330 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 221 transitions. [2024-11-28 03:15:48,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 221 transitions. [2024-11-28 03:15:48,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:15:48,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:48,332 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] [2024-11-28 03:15:48,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:15:48,332 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:48,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:48,337 INFO L85 PathProgramCache]: Analyzing trace with hash -680030663, now seen corresponding path program 1 times [2024-11-28 03:15:48,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:48,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324122941] [2024-11-28 03:15:48,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:48,768 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 03:15:48,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:48,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324122941] [2024-11-28 03:15:48,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324122941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:48,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:48,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:15:48,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958888210] [2024-11-28 03:15:48,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:48,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:48,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:48,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:48,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:48,772 INFO L87 Difference]: Start difference. First operand 182 states and 221 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:49,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:49,518 INFO L93 Difference]: Finished difference Result 277 states and 332 transitions. [2024-11-28 03:15:49,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:15:49,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:15:49,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:49,521 INFO L225 Difference]: With dead ends: 277 [2024-11-28 03:15:49,521 INFO L226 Difference]: Without dead ends: 277 [2024-11-28 03:15:49,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:15:49,523 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 100 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 840 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:49,523 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 840 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:15:49,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-28 03:15:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 195. [2024-11-28 03:15:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 162 states have (on average 1.4074074074074074) internal successors, (228), 193 states have internal predecessors, (228), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 235 transitions. [2024-11-28 03:15:49,533 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 235 transitions. Word has length 30 [2024-11-28 03:15:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:49,533 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 235 transitions. [2024-11-28 03:15:49,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 235 transitions. [2024-11-28 03:15:49,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:15:49,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:49,535 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] [2024-11-28 03:15:49,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:15:49,536 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:49,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:49,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1766175305, now seen corresponding path program 1 times [2024-11-28 03:15:49,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:49,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145741326] [2024-11-28 03:15:49,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:49,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:49,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:49,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:49,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145741326] [2024-11-28 03:15:49,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145741326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:15:49,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103644451] [2024-11-28 03:15:49,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:49,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:49,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:49,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:49,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:15:50,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:50,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:15:50,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:50,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:15:50,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:15:50,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 03:15:50,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:15:50,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:50,821 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:51,938 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 10 treesize of output 8 [2024-11-28 03:15:51,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-11-28 03:15:51,978 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 10 treesize of output 8 [2024-11-28 03:15:51,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:52,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:52,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103644451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:15:52,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:15:52,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 13 [2024-11-28 03:15:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664793069] [2024-11-28 03:15:52,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:15:52,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:15:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:52,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:15:52,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:15:52,019 INFO L87 Difference]: Start difference. First operand 195 states and 235 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 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 03:15:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:52,883 INFO L93 Difference]: Finished difference Result 320 states and 372 transitions. [2024-11-28 03:15:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:15:52,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 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 33 [2024-11-28 03:15:52,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:52,887 INFO L225 Difference]: With dead ends: 320 [2024-11-28 03:15:52,888 INFO L226 Difference]: Without dead ends: 320 [2024-11-28 03:15:52,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:15:52,894 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 746 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:52,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 801 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:15:52,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-28 03:15:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 224. [2024-11-28 03:15:52,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 191 states have (on average 1.4136125654450262) internal successors, (270), 222 states have internal predecessors, (270), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 277 transitions. [2024-11-28 03:15:52,909 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 277 transitions. Word has length 33 [2024-11-28 03:15:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:52,910 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 277 transitions. [2024-11-28 03:15:52,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 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 03:15:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 277 transitions. [2024-11-28 03:15:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:15:52,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:52,912 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] [2024-11-28 03:15:52,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:15:53,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:53,114 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:53,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:53,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1063035240, now seen corresponding path program 1 times [2024-11-28 03:15:53,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:53,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114317999] [2024-11-28 03:15:53,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:53,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:53,480 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 03:15:53,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:53,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114317999] [2024-11-28 03:15:53,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114317999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:53,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:53,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:53,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212435297] [2024-11-28 03:15:53,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:53,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:53,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:53,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:53,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:53,486 INFO L87 Difference]: Start difference. First operand 224 states and 277 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:53,811 INFO L93 Difference]: Finished difference Result 223 states and 276 transitions. [2024-11-28 03:15:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:53,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-28 03:15:53,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:53,814 INFO L225 Difference]: With dead ends: 223 [2024-11-28 03:15:53,814 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 03:15:53,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:53,815 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:53,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 427 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:15:53,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 03:15:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2024-11-28 03:15:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 191 states have (on average 1.4083769633507854) internal successors, (269), 221 states have internal predecessors, (269), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:53,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 276 transitions. [2024-11-28 03:15:53,827 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 276 transitions. Word has length 34 [2024-11-28 03:15:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:53,828 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 276 transitions. [2024-11-28 03:15:53,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 276 transitions. [2024-11-28 03:15:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:15:53,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:53,829 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] [2024-11-28 03:15:53,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:15:53,830 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:53,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1063035239, now seen corresponding path program 1 times [2024-11-28 03:15:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:53,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924539353] [2024-11-28 03:15:53,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:54,062 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 03:15:54,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:54,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924539353] [2024-11-28 03:15:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924539353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:54,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976055712] [2024-11-28 03:15:54,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:54,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:54,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:54,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:54,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:54,065 INFO L87 Difference]: Start difference. First operand 223 states and 276 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:54,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:54,490 INFO L93 Difference]: Finished difference Result 222 states and 275 transitions. [2024-11-28 03:15:54,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-28 03:15:54,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:54,493 INFO L225 Difference]: With dead ends: 222 [2024-11-28 03:15:54,493 INFO L226 Difference]: Without dead ends: 222 [2024-11-28 03:15:54,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:54,502 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:54,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 424 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:15:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-28 03:15:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2024-11-28 03:15:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 191 states have (on average 1.4031413612565444) internal successors, (268), 220 states have internal predecessors, (268), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 275 transitions. [2024-11-28 03:15:54,531 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 275 transitions. Word has length 34 [2024-11-28 03:15:54,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:54,534 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 275 transitions. [2024-11-28 03:15:54,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 275 transitions. [2024-11-28 03:15:54,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:15:54,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:54,536 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] [2024-11-28 03:15:54,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:15:54,537 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:54,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 634644650, now seen corresponding path program 1 times [2024-11-28 03:15:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:54,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596779504] [2024-11-28 03:15:54,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:54,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:55,128 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 03:15:55,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:55,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596779504] [2024-11-28 03:15:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596779504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:55,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:15:55,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946318071] [2024-11-28 03:15:55,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:55,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:15:55,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:55,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:15:55,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:15:55,134 INFO L87 Difference]: Start difference. First operand 222 states and 275 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:56,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:56,287 INFO L93 Difference]: Finished difference Result 280 states and 331 transitions. [2024-11-28 03:15:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:15:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:15:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:56,290 INFO L225 Difference]: With dead ends: 280 [2024-11-28 03:15:56,290 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 03:15:56,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:15:56,292 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 342 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:56,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 721 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:15:56,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 03:15:56,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 223. [2024-11-28 03:15:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 194 states have (on average 1.3711340206185567) internal successors, (266), 221 states have internal predecessors, (266), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:56,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 273 transitions. [2024-11-28 03:15:56,302 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 273 transitions. Word has length 35 [2024-11-28 03:15:56,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:56,303 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 273 transitions. [2024-11-28 03:15:56,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:56,303 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 273 transitions. [2024-11-28 03:15:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:15:56,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:56,304 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] [2024-11-28 03:15:56,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:15:56,305 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:56,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:56,306 INFO L85 PathProgramCache]: Analyzing trace with hash 634644651, now seen corresponding path program 1 times [2024-11-28 03:15:56,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:56,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662328284] [2024-11-28 03:15:56,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:57,324 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 03:15:57,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:57,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662328284] [2024-11-28 03:15:57,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662328284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:57,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:57,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:15:57,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379958107] [2024-11-28 03:15:57,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:57,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:15:57,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:57,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:15:57,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:15:57,327 INFO L87 Difference]: Start difference. First operand 223 states and 273 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:58,714 INFO L93 Difference]: Finished difference Result 289 states and 342 transitions. [2024-11-28 03:15:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:15:58,715 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:15:58,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:58,717 INFO L225 Difference]: With dead ends: 289 [2024-11-28 03:15:58,717 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 03:15:58,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:15:58,720 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 289 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:58,722 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 863 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:15:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 03:15:58,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 229. [2024-11-28 03:15:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 200 states have (on average 1.365) internal successors, (273), 227 states have internal predecessors, (273), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 280 transitions. [2024-11-28 03:15:58,735 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 280 transitions. Word has length 35 [2024-11-28 03:15:58,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:58,736 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 280 transitions. [2024-11-28 03:15:58,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 280 transitions. [2024-11-28 03:15:58,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:15:58,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:58,738 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] [2024-11-28 03:15:58,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-28 03:15:58,738 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:58,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 47458798, now seen corresponding path program 1 times [2024-11-28 03:15:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:58,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537055574] [2024-11-28 03:15:58,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:58,827 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 03:15:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537055574] [2024-11-28 03:15:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537055574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:58,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:58,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252907277] [2024-11-28 03:15:58,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:58,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:15:58,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:58,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:15:58,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:15:58,832 INFO L87 Difference]: Start difference. First operand 229 states and 280 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:58,853 INFO L93 Difference]: Finished difference Result 230 states and 281 transitions. [2024-11-28 03:15:58,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:58,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:15:58,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:58,856 INFO L225 Difference]: With dead ends: 230 [2024-11-28 03:15:58,856 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 03:15:58,857 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 03:15:58,858 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:58,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:15:58,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 03:15:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2024-11-28 03:15:58,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 201 states have (on average 1.36318407960199) internal successors, (274), 228 states have internal predecessors, (274), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 281 transitions. [2024-11-28 03:15:58,869 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 281 transitions. Word has length 38 [2024-11-28 03:15:58,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:58,870 INFO L471 AbstractCegarLoop]: Abstraction has 230 states and 281 transitions. [2024-11-28 03:15:58,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:58,870 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 281 transitions. [2024-11-28 03:15:58,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:15:58,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:58,872 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] [2024-11-28 03:15:58,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 03:15:58,872 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:15:58,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 2089077647, now seen corresponding path program 1 times [2024-11-28 03:15:58,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:58,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347577663] [2024-11-28 03:15:58,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:58,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:59,390 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 03:15:59,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:15:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347577663] [2024-11-28 03:15:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347577663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:59,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:59,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:15:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240247989] [2024-11-28 03:15:59,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:59,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:15:59,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:59,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:15:59,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:15:59,393 INFO L87 Difference]: Start difference. First operand 230 states and 281 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:00,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:00,076 INFO L93 Difference]: Finished difference Result 231 states and 282 transitions. [2024-11-28 03:16:00,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:16:00,077 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-28 03:16:00,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:00,079 INFO L225 Difference]: With dead ends: 231 [2024-11-28 03:16:00,079 INFO L226 Difference]: Without dead ends: 231 [2024-11-28 03:16:00,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:16:00,080 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 62 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:00,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 723 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:16:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-28 03:16:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2024-11-28 03:16:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 201 states have (on average 1.3582089552238805) internal successors, (273), 227 states have internal predecessors, (273), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 280 transitions. [2024-11-28 03:16:00,089 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 280 transitions. Word has length 37 [2024-11-28 03:16:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:00,089 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 280 transitions. [2024-11-28 03:16:00,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 280 transitions. [2024-11-28 03:16:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:16:00,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:00,090 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] [2024-11-28 03:16:00,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 03:16:00,090 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:00,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:00,091 INFO L85 PathProgramCache]: Analyzing trace with hash 2089077648, now seen corresponding path program 1 times [2024-11-28 03:16:00,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249377761] [2024-11-28 03:16:00,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:00,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:00,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:00,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249377761] [2024-11-28 03:16:00,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249377761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:00,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:00,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:16:00,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012859405] [2024-11-28 03:16:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:00,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:16:00,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:00,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:16:00,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:16:00,753 INFO L87 Difference]: Start difference. First operand 229 states and 280 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:01,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:01,528 INFO L93 Difference]: Finished difference Result 230 states and 281 transitions. [2024-11-28 03:16:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:16:01,529 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-28 03:16:01,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:01,530 INFO L225 Difference]: With dead ends: 230 [2024-11-28 03:16:01,531 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 03:16:01,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:16:01,532 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 60 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:01,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 740 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:16:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 03:16:01,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 228. [2024-11-28 03:16:01,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 201 states have (on average 1.3532338308457712) internal successors, (272), 226 states have internal predecessors, (272), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:01,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 279 transitions. [2024-11-28 03:16:01,543 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 279 transitions. Word has length 37 [2024-11-28 03:16:01,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:01,543 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 279 transitions. [2024-11-28 03:16:01,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 279 transitions. [2024-11-28 03:16:01,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:16:01,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:01,545 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] [2024-11-28 03:16:01,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 03:16:01,545 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:01,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:01,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1994733467, now seen corresponding path program 1 times [2024-11-28 03:16:01,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:01,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506263999] [2024-11-28 03:16:01,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:01,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:01,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506263999] [2024-11-28 03:16:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506263999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:01,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:01,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:16:01,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973040223] [2024-11-28 03:16:01,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:01,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:16:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:01,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:16:01,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:01,799 INFO L87 Difference]: Start difference. First operand 228 states and 279 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:02,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:02,224 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2024-11-28 03:16:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:16:02,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:16:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:02,227 INFO L225 Difference]: With dead ends: 242 [2024-11-28 03:16:02,227 INFO L226 Difference]: Without dead ends: 242 [2024-11-28 03:16:02,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:16:02,231 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 10 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:02,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 631 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:16:02,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-28 03:16:02,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 237. [2024-11-28 03:16:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 210 states have (on average 1.338095238095238) internal successors, (281), 235 states have internal predecessors, (281), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 288 transitions. [2024-11-28 03:16:02,245 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 288 transitions. Word has length 39 [2024-11-28 03:16:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:02,245 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 288 transitions. [2024-11-28 03:16:02,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 288 transitions. [2024-11-28 03:16:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:16:02,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:02,247 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] [2024-11-28 03:16:02,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 03:16:02,250 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:02,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -746876152, now seen corresponding path program 1 times [2024-11-28 03:16:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:02,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523952655] [2024-11-28 03:16:02,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:03,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523952655] [2024-11-28 03:16:03,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523952655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:03,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:03,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:16:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717889726] [2024-11-28 03:16:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:03,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:16:03,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:03,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:16:03,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:16:03,644 INFO L87 Difference]: Start difference. First operand 237 states and 288 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:05,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:05,502 INFO L93 Difference]: Finished difference Result 320 states and 369 transitions. [2024-11-28 03:16:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:16:05,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:16:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:05,505 INFO L225 Difference]: With dead ends: 320 [2024-11-28 03:16:05,505 INFO L226 Difference]: Without dead ends: 320 [2024-11-28 03:16:05,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=193, Invalid=677, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:16:05,511 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 629 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:05,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 890 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:16:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-28 03:16:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 237. [2024-11-28 03:16:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 210 states have (on average 1.3333333333333333) internal successors, (280), 235 states have internal predecessors, (280), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 287 transitions. [2024-11-28 03:16:05,533 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 287 transitions. Word has length 39 [2024-11-28 03:16:05,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:05,534 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 287 transitions. [2024-11-28 03:16:05,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:05,534 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 287 transitions. [2024-11-28 03:16:05,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:16:05,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:05,535 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] [2024-11-28 03:16:05,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 03:16:05,536 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:05,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash -315225709, now seen corresponding path program 1 times [2024-11-28 03:16:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034278580] [2024-11-28 03:16:05,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:05,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:05,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:05,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034278580] [2024-11-28 03:16:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034278580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:05,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:16:05,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640213847] [2024-11-28 03:16:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:05,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:16:05,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:05,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:16:05,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:05,788 INFO L87 Difference]: Start difference. First operand 237 states and 287 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:06,149 INFO L93 Difference]: Finished difference Result 248 states and 299 transitions. [2024-11-28 03:16:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:16:06,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 03:16:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:06,151 INFO L225 Difference]: With dead ends: 248 [2024-11-28 03:16:06,152 INFO L226 Difference]: Without dead ends: 248 [2024-11-28 03:16:06,152 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:16:06,154 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 20 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:06,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 587 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:16:06,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-28 03:16:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 235. [2024-11-28 03:16:06,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 209 states have (on average 1.3301435406698565) internal successors, (278), 233 states have internal predecessors, (278), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 284 transitions. [2024-11-28 03:16:06,165 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 284 transitions. Word has length 40 [2024-11-28 03:16:06,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:06,166 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 284 transitions. [2024-11-28 03:16:06,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,166 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 284 transitions. [2024-11-28 03:16:06,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:16:06,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:06,167 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] [2024-11-28 03:16:06,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 03:16:06,168 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:06,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash 2063233724, now seen corresponding path program 1 times [2024-11-28 03:16:06,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:06,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415602164] [2024-11-28 03:16:06,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:06,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:06,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415602164] [2024-11-28 03:16:06,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415602164] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:06,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:16:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748330668] [2024-11-28 03:16:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:06,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:06,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:06,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:06,239 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:06,239 INFO L87 Difference]: Start difference. First operand 235 states and 284 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:06,344 INFO L93 Difference]: Finished difference Result 244 states and 288 transitions. [2024-11-28 03:16:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:06,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:16:06,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:06,347 INFO L225 Difference]: With dead ends: 244 [2024-11-28 03:16:06,347 INFO L226 Difference]: Without dead ends: 244 [2024-11-28 03:16:06,347 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:06,348 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 85 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:06,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 147 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-28 03:16:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 236. [2024-11-28 03:16:06,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 234 states have internal predecessors, (279), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 285 transitions. [2024-11-28 03:16:06,360 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 285 transitions. Word has length 39 [2024-11-28 03:16:06,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:06,360 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 285 transitions. [2024-11-28 03:16:06,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:06,361 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 285 transitions. [2024-11-28 03:16:06,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:16:06,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:06,362 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, 1] [2024-11-28 03:16:06,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 03:16:06,362 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:06,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash 730999830, now seen corresponding path program 1 times [2024-11-28 03:16:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948000578] [2024-11-28 03:16:06,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948000578] [2024-11-28 03:16:07,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948000578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:07,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:07,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:16:07,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159421046] [2024-11-28 03:16:07,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:07,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:16:07,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:07,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:16:07,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:16:07,564 INFO L87 Difference]: Start difference. First operand 236 states and 285 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:08,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:08,883 INFO L93 Difference]: Finished difference Result 305 states and 349 transitions. [2024-11-28 03:16:08,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:16:08,884 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-28 03:16:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:08,886 INFO L225 Difference]: With dead ends: 305 [2024-11-28 03:16:08,886 INFO L226 Difference]: Without dead ends: 305 [2024-11-28 03:16:08,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:16:08,887 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 614 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:08,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 881 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:16:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-28 03:16:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 236. [2024-11-28 03:16:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 234 states have internal predecessors, (278), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 284 transitions. [2024-11-28 03:16:08,899 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 284 transitions. Word has length 42 [2024-11-28 03:16:08,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:08,900 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 284 transitions. [2024-11-28 03:16:08,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 284 transitions. [2024-11-28 03:16:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:16:08,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:08,901 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-28 03:16:08,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-28 03:16:08,902 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:08,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:08,902 INFO L85 PathProgramCache]: Analyzing trace with hash 519386200, now seen corresponding path program 1 times [2024-11-28 03:16:08,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:08,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427906993] [2024-11-28 03:16:08,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:08,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:08,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:09,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:09,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427906993] [2024-11-28 03:16:09,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427906993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:09,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862053116] [2024-11-28 03:16:09,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:09,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:09,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:09,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:09,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:16:09,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:09,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:16:09,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:09,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:16:09,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:16:09,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 03:16:09,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:16:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:10,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862053116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:10,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 8 [2024-11-28 03:16:10,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247811458] [2024-11-28 03:16:10,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:10,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:16:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:10,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:16:10,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:10,307 INFO L87 Difference]: Start difference. First operand 236 states and 284 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:10,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:10,841 INFO L93 Difference]: Finished difference Result 304 states and 354 transitions. [2024-11-28 03:16:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:16:10,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-28 03:16:10,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:10,844 INFO L225 Difference]: With dead ends: 304 [2024-11-28 03:16:10,844 INFO L226 Difference]: Without dead ends: 304 [2024-11-28 03:16:10,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:16:10,845 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 87 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:10,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 570 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:16:10,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2024-11-28 03:16:10,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 258. [2024-11-28 03:16:10,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 232 states have (on average 1.3362068965517242) internal successors, (310), 256 states have internal predecessors, (310), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 316 transitions. [2024-11-28 03:16:10,856 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 316 transitions. Word has length 42 [2024-11-28 03:16:10,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:10,856 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 316 transitions. [2024-11-28 03:16:10,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 316 transitions. [2024-11-28 03:16:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:16:10,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:10,858 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, 1, 1] [2024-11-28 03:16:10,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:16:11,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:11,063 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:11,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1078891740, now seen corresponding path program 1 times [2024-11-28 03:16:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:11,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873556242] [2024-11-28 03:16:11,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:11,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:11,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873556242] [2024-11-28 03:16:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873556242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001594609] [2024-11-28 03:16:11,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:11,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:11,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:11,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:11,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:16:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:11,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:16:11,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:11,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 13 treesize of output 9 [2024-11-28 03:16:11,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:11,564 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:11,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001594609] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:11,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:11,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2024-11-28 03:16:11,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903831863] [2024-11-28 03:16:11,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:11,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:11,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:11,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:11,696 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:11,696 INFO L87 Difference]: Start difference. First operand 258 states and 316 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:11,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:11,902 INFO L93 Difference]: Finished difference Result 291 states and 349 transitions. [2024-11-28 03:16:11,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:16:11,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:16:11,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:11,905 INFO L225 Difference]: With dead ends: 291 [2024-11-28 03:16:11,905 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 03:16:11,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:11,907 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:11,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 306 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:11,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 03:16:11,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 265. [2024-11-28 03:16:11,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 239 states have (on average 1.3263598326359833) internal successors, (317), 263 states have internal predecessors, (317), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:11,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 323 transitions. [2024-11-28 03:16:11,920 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 323 transitions. Word has length 43 [2024-11-28 03:16:11,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:11,920 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 323 transitions. [2024-11-28 03:16:11,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 323 transitions. [2024-11-28 03:16:11,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:16:11,922 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:11,922 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, 1, 1, 1] [2024-11-28 03:16:11,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:16:12,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:12,128 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:12,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 909708362, now seen corresponding path program 1 times [2024-11-28 03:16:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:12,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660815384] [2024-11-28 03:16:12,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:12,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:12,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:12,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660815384] [2024-11-28 03:16:12,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660815384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:12,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:12,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:12,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866995062] [2024-11-28 03:16:12,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:12,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:12,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:12,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:12,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:12,214 INFO L87 Difference]: Start difference. First operand 265 states and 323 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:12,341 INFO L93 Difference]: Finished difference Result 268 states and 323 transitions. [2024-11-28 03:16:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-28 03:16:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:12,344 INFO L225 Difference]: With dead ends: 268 [2024-11-28 03:16:12,344 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 03:16:12,344 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:12,345 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 68 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:12,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 171 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:16:12,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 03:16:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 264. [2024-11-28 03:16:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 239 states have (on average 1.3138075313807531) internal successors, (314), 262 states have internal predecessors, (314), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 319 transitions. [2024-11-28 03:16:12,359 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 319 transitions. Word has length 44 [2024-11-28 03:16:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:12,360 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 319 transitions. [2024-11-28 03:16:12,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 319 transitions. [2024-11-28 03:16:12,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:16:12,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:12,362 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, 1, 1] [2024-11-28 03:16:12,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 03:16:12,362 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:12,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash 167894032, now seen corresponding path program 1 times [2024-11-28 03:16:12,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:12,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671289728] [2024-11-28 03:16:12,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:12,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671289728] [2024-11-28 03:16:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671289728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:12,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:16:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89694707] [2024-11-28 03:16:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:12,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:16:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:12,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:16:12,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:16:12,807 INFO L87 Difference]: Start difference. First operand 264 states and 319 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:13,512 INFO L93 Difference]: Finished difference Result 281 states and 327 transitions. [2024-11-28 03:16:13,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:16:13,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:16:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:13,514 INFO L225 Difference]: With dead ends: 281 [2024-11-28 03:16:13,514 INFO L226 Difference]: Without dead ends: 281 [2024-11-28 03:16:13,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:16:13,515 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 397 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:13,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 428 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:16:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-28 03:16:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 264. [2024-11-28 03:16:13,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 239 states have (on average 1.3096234309623431) internal successors, (313), 262 states have internal predecessors, (313), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:13,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 318 transitions. [2024-11-28 03:16:13,530 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 318 transitions. Word has length 43 [2024-11-28 03:16:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:13,530 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 318 transitions. [2024-11-28 03:16:13,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:13,531 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 318 transitions. [2024-11-28 03:16:13,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:16:13,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:13,532 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, 1, 1] [2024-11-28 03:16:13,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 03:16:13,534 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:13,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash 167894033, now seen corresponding path program 1 times [2024-11-28 03:16:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336114711] [2024-11-28 03:16:13,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:13,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:16:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336114711] [2024-11-28 03:16:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336114711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:16:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107303209] [2024-11-28 03:16:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:14,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:16:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:14,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:16:14,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:16:14,115 INFO L87 Difference]: Start difference. First operand 264 states and 318 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:15,030 INFO L93 Difference]: Finished difference Result 276 states and 322 transitions. [2024-11-28 03:16:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:16:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:16:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:15,032 INFO L225 Difference]: With dead ends: 276 [2024-11-28 03:16:15,033 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 03:16:15,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:16:15,033 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 245 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:15,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 551 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:16:15,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 03:16:15,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 264. [2024-11-28 03:16:15,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 239 states have (on average 1.297071129707113) internal successors, (310), 262 states have internal predecessors, (310), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 315 transitions. [2024-11-28 03:16:15,043 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 315 transitions. Word has length 43 [2024-11-28 03:16:15,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:15,043 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 315 transitions. [2024-11-28 03:16:15,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,043 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 315 transitions. [2024-11-28 03:16:15,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:16:15,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:15,044 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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:15,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-28 03:16:15,045 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:15,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:15,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1429806982, now seen corresponding path program 1 times [2024-11-28 03:16:15,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:15,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220804012] [2024-11-28 03:16:15,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:15,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220804012] [2024-11-28 03:16:15,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220804012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:15,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:15,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:16:15,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747115558] [2024-11-28 03:16:15,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:15,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:16:15,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:15,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:16:15,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:15,106 INFO L87 Difference]: Start difference. First operand 264 states and 315 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:15,128 INFO L93 Difference]: Finished difference Result 318 states and 386 transitions. [2024-11-28 03:16:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:16:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:16:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:15,130 INFO L225 Difference]: With dead ends: 318 [2024-11-28 03:16:15,130 INFO L226 Difference]: Without dead ends: 318 [2024-11-28 03:16:15,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:16:15,131 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 11 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:15,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 286 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:16:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2024-11-28 03:16:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 300. [2024-11-28 03:16:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 275 states have (on average 1.3345454545454545) internal successors, (367), 298 states have internal predecessors, (367), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 372 transitions. [2024-11-28 03:16:15,142 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 372 transitions. Word has length 47 [2024-11-28 03:16:15,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:15,142 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 372 transitions. [2024-11-28 03:16:15,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:15,143 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 372 transitions. [2024-11-28 03:16:15,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:16:15,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:15,144 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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:15,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 03:16:15,144 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:15,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1061710598, now seen corresponding path program 1 times [2024-11-28 03:16:15,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:15,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133852793] [2024-11-28 03:16:15,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:15,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:15,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:15,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:15,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133852793] [2024-11-28 03:16:15,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133852793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:15,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:15,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:16:15,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740675747] [2024-11-28 03:16:15,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:15,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:16:15,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:15,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:16:15,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:16:15,602 INFO L87 Difference]: Start difference. First operand 300 states and 372 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:16,420 INFO L93 Difference]: Finished difference Result 319 states and 385 transitions. [2024-11-28 03:16:16,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:16:16,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:16:16,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:16,423 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:16:16,423 INFO L226 Difference]: Without dead ends: 319 [2024-11-28 03:16:16,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:16:16,424 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 77 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:16,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 606 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:16:16,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-28 03:16:16,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 300. [2024-11-28 03:16:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 275 states have (on average 1.3309090909090908) internal successors, (366), 298 states have internal predecessors, (366), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 371 transitions. [2024-11-28 03:16:16,435 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 371 transitions. Word has length 47 [2024-11-28 03:16:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:16,436 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 371 transitions. [2024-11-28 03:16:16,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 371 transitions. [2024-11-28 03:16:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:16:16,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:16,437 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:16,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 03:16:16,438 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:16,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:16,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1425501091, now seen corresponding path program 1 times [2024-11-28 03:16:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:16,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001692010] [2024-11-28 03:16:16,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:16,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001692010] [2024-11-28 03:16:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001692010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:16,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:16:16,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267770544] [2024-11-28 03:16:16,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:16,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:16:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:16,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:16:16,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:16:16,616 INFO L87 Difference]: Start difference. First operand 300 states and 371 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:16,827 INFO L93 Difference]: Finished difference Result 248 states and 283 transitions. [2024-11-28 03:16:16,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:16:16,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:16:16,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:16,830 INFO L225 Difference]: With dead ends: 248 [2024-11-28 03:16:16,830 INFO L226 Difference]: Without dead ends: 248 [2024-11-28 03:16:16,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:16:16,832 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:16,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 559 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-28 03:16:16,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-28 03:16:16,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 224 states have (on average 1.2455357142857142) internal successors, (279), 246 states have internal predecessors, (279), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 283 transitions. [2024-11-28 03:16:16,842 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 283 transitions. Word has length 47 [2024-11-28 03:16:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:16,845 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 283 transitions. [2024-11-28 03:16:16,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 283 transitions. [2024-11-28 03:16:16,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:16:16,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:16,846 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:16,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 03:16:16,847 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:16,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:16,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1065277009, now seen corresponding path program 1 times [2024-11-28 03:16:16,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:16,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255225364] [2024-11-28 03:16:16,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:16,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:17,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:17,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:17,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255225364] [2024-11-28 03:16:17,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255225364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:17,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:17,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:16:17,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543984046] [2024-11-28 03:16:17,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:17,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:16:17,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:17,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:16:17,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:16:17,068 INFO L87 Difference]: Start difference. First operand 248 states and 283 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 03:16:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:17,255 INFO L93 Difference]: Finished difference Result 262 states and 298 transitions. [2024-11-28 03:16:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:16:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 03:16:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:17,258 INFO L225 Difference]: With dead ends: 262 [2024-11-28 03:16:17,258 INFO L226 Difference]: Without dead ends: 262 [2024-11-28 03:16:17,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:16:17,259 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 12 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:17,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 488 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:16:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-28 03:16:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 251. [2024-11-28 03:16:17,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 227 states have (on average 1.2422907488986785) internal successors, (282), 249 states have internal predecessors, (282), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:17,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 286 transitions. [2024-11-28 03:16:17,267 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 286 transitions. Word has length 50 [2024-11-28 03:16:17,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:17,267 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 286 transitions. [2024-11-28 03:16:17,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 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 03:16:17,268 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 286 transitions. [2024-11-28 03:16:17,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:16:17,269 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:17,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:17,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 03:16:17,269 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:17,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:17,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1657372056, now seen corresponding path program 1 times [2024-11-28 03:16:17,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:17,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613125528] [2024-11-28 03:16:17,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:17,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:16:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613125528] [2024-11-28 03:16:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613125528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:16:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:16:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 03:16:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178131880] [2024-11-28 03:16:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:16:17,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:16:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:17,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:16:17,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:16:17,657 INFO L87 Difference]: Start difference. First operand 251 states and 286 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 03:16:18,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:16:18,273 INFO L93 Difference]: Finished difference Result 232 states and 264 transitions. [2024-11-28 03:16:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:16:18,274 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 03:16:18,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:16:18,275 INFO L225 Difference]: With dead ends: 232 [2024-11-28 03:16:18,275 INFO L226 Difference]: Without dead ends: 232 [2024-11-28 03:16:18,275 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:16:18,276 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 396 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:16:18,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 626 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:16:18,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-28 03:16:18,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2024-11-28 03:16:18,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 203 states have (on average 1.2610837438423645) internal successors, (256), 225 states have internal predecessors, (256), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:18,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 260 transitions. [2024-11-28 03:16:18,282 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 260 transitions. Word has length 50 [2024-11-28 03:16:18,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:16:18,282 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 260 transitions. [2024-11-28 03:16:18,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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 03:16:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 260 transitions. [2024-11-28 03:16:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:16:18,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:16:18,283 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:16:18,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 03:16:18,284 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:16:18,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:16:18,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2105370230, now seen corresponding path program 1 times [2024-11-28 03:16:18,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:16:18,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924549413] [2024-11-28 03:16:18,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:18,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:16:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:19,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:19,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:19,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924549413] [2024-11-28 03:16:19,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924549413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:19,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414147547] [2024-11-28 03:16:19,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:16:19,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:19,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:19,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:19,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:16:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:16:19,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 03:16:19,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:16:19,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:16:19,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:16:19,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:16:20,155 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:16:20,155 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 11 treesize of output 11 [2024-11-28 03:16:20,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:16:20,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:16:20,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:16:20,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:16:20,584 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:16:20,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2024-11-28 03:16:20,625 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:16:20,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:16:20,963 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:16:20,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 43 [2024-11-28 03:16:20,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:16:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:21,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:16:21,607 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_1068 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1068) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1067 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1067) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)))) is different from false [2024-11-28 03:16:21,717 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_1067 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1067) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)) (forall ((v_ArrVal_1068 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1068) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 0)))) is different from false [2024-11-28 03:16:26,752 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:16:26,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:16:26,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 31 [2024-11-28 03:16:26,770 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 36 treesize of output 24 [2024-11-28 03:16:26,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:16:26,787 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:16:26,794 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2024-11-28 03:16:26,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 1 [2024-11-28 03:16:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:16:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414147547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:16:26,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:16:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13, 13] total 34 [2024-11-28 03:16:26,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015941119] [2024-11-28 03:16:26,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:16:26,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 03:16:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:16:26,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 03:16:26,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=822, Unknown=22, NotChecked=122, Total=1122 [2024-11-28 03:16:26,880 INFO L87 Difference]: Start difference. First operand 227 states and 260 transitions. Second operand has 34 states, 34 states have (on average 4.147058823529412) internal successors, (141), 34 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:16:31,065 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 03:16:35,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:16:39,355 WARN L539 Checker$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 03:16:44,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:16:52,636 WARN L539 Checker$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 03:17:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:17:14,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:17:30,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:17:39,352 WARN L539 Checker$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 03:17:43,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:17:47,531 WARN L539 Checker$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 03:18:07,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:18:11,890 WARN L539 Checker$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 03:18:16,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:18:48,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:19:17,067 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 03:19:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:17,073 INFO L93 Difference]: Finished difference Result 492 states and 543 transitions. [2024-11-28 03:19:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:19:17,074 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 4.147058823529412) internal successors, (141), 34 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-28 03:19:17,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:17,076 INFO L225 Difference]: With dead ends: 492 [2024-11-28 03:19:17,076 INFO L226 Difference]: Without dead ends: 492 [2024-11-28 03:19:17,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 108.7s TimeCoverageRelationStatistics Valid=752, Invalid=2866, Unknown=50, NotChecked=238, Total=3906 [2024-11-28 03:19:17,078 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 1364 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 157 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1364 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 2771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 959 IncrementalHoareTripleChecker+Unchecked, 66.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:17,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1364 Valid, 1825 Invalid, 2771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1627 Invalid, 28 Unknown, 959 Unchecked, 66.9s Time] [2024-11-28 03:19:17,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-28 03:19:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 267. [2024-11-28 03:19:17,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 243 states have (on average 1.2304526748971194) internal successors, (299), 265 states have internal predecessors, (299), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:17,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 303 transitions. [2024-11-28 03:19:17,088 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 303 transitions. Word has length 52 [2024-11-28 03:19:17,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:17,088 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 303 transitions. [2024-11-28 03:19:17,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.147058823529412) internal successors, (141), 34 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:17,088 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 303 transitions. [2024-11-28 03:19:17,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:19:17,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:17,089 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:17,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:19:17,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-28 03:19:17,294 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:19:17,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1418947348, now seen corresponding path program 1 times [2024-11-28 03:19:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266047601] [2024-11-28 03:19:17,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:17,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:17,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:17,742 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:17,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:17,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266047601] [2024-11-28 03:19:17,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266047601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:17,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518894645] [2024-11-28 03:19:17,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:17,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:17,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:17,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:17,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:19:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:17,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:19:17,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:17,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:19:18,136 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-28 03:19:18,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-28 03:19:18,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:19:18,415 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:19:18,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 03:19:18,565 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:19:18,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 03:19:18,883 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 25 treesize of output 13 [2024-11-28 03:19:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:19,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:19,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:19,647 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-11-28 03:19:19,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:19,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2024-11-28 03:19:19,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 03:19:21,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518894645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:21,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:21,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2024-11-28 03:19:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540892608] [2024-11-28 03:19:21,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:21,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:19:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:21,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:19:21,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=732, Unknown=10, NotChecked=0, Total=870 [2024-11-28 03:19:21,298 INFO L87 Difference]: Start difference. First operand 267 states and 303 transitions. Second operand has 30 states, 29 states have (on average 5.482758620689655) internal successors, (159), 30 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:23,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:23,644 INFO L93 Difference]: Finished difference Result 513 states and 563 transitions. [2024-11-28 03:19:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:19:23,645 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.482758620689655) internal successors, (159), 30 states have internal predecessors, (159), 0 states have call successors, (0), 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 55 [2024-11-28 03:19:23,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:23,647 INFO L225 Difference]: With dead ends: 513 [2024-11-28 03:19:23,647 INFO L226 Difference]: Without dead ends: 513 [2024-11-28 03:19:23,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=200, Invalid=1050, Unknown=10, NotChecked=0, Total=1260 [2024-11-28 03:19:23,648 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 950 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 1732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:23,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 1595 Invalid, 1732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:19:23,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2024-11-28 03:19:23,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 345. [2024-11-28 03:19:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 321 states have (on average 1.2149532710280373) internal successors, (390), 343 states have internal predecessors, (390), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 394 transitions. [2024-11-28 03:19:23,658 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 394 transitions. Word has length 55 [2024-11-28 03:19:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:23,658 INFO L471 AbstractCegarLoop]: Abstraction has 345 states and 394 transitions. [2024-11-28 03:19:23,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.482758620689655) internal successors, (159), 30 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 394 transitions. [2024-11-28 03:19:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:19:23,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:23,659 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:19:23,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:19:23,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:23,860 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:19:23,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1418947347, now seen corresponding path program 1 times [2024-11-28 03:19:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:23,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883572928] [2024-11-28 03:19:23,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883572928] [2024-11-28 03:19:24,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883572928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:24,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703035446] [2024-11-28 03:19:24,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:24,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:24,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:24,452 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:24,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:19:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:24,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 03:19:24,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:24,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:19:24,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-28 03:19:24,819 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:19:24,820 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 11 treesize of output 11 [2024-11-28 03:19:24,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:19:24,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:19:25,121 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:19:25,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:19:25,150 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:19:25,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 03:19:25,313 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:19:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:19:25,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:19:25,662 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 25 treesize of output 13 [2024-11-28 03:19:25,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:19:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:25,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:26,419 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1218 (Array Int Int)) (v_ArrVal_1217 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int)) (or (< |v_ULTIMATE.start_main_~end~0#1.offset_86| 0) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_86|) (< (+ 7 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1218) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1217) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))))) (forall ((v_ArrVal_1218 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int)) (or (< |v_ULTIMATE.start_main_~end~0#1.offset_86| 0) (< 0 (+ 5 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1218) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_86|)))) is different from false [2024-11-28 03:19:26,656 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1218 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int)) (or (< 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1218) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|) 5)) (< |v_ULTIMATE.start_main_~end~0#1.offset_86| 0) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_86|))) (forall ((v_ArrVal_1218 (Array Int Int)) (v_ArrVal_1217 (Array Int Int)) (|v_ULTIMATE.start_main_~end~0#1.offset_86| Int)) (or (< (+ 7 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1218) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1217) |c_ULTIMATE.start_main_~list~0#1.base|) |v_ULTIMATE.start_main_~end~0#1.offset_86|))) (< |v_ULTIMATE.start_main_~end~0#1.offset_86| 0) (< |c_ULTIMATE.start_main_~list~0#1.offset| |v_ULTIMATE.start_main_~end~0#1.offset_86|)))) is different from false [2024-11-28 03:19:26,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:26,895 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 03:19:26,905 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:26,906 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 03:19:26,922 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:26,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-28 03:19:26,962 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:26,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2024-11-28 03:19:26,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2024-11-28 03:19:26,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-28 03:19:27,072 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:27,072 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2024-11-28 03:19:27,078 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:27,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:19:27,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:19:27,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-28 03:19:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:27,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703035446] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:27,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:27,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-28 03:19:27,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011524425] [2024-11-28 03:19:27,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:27,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:19:27,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:27,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:19:27,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=780, Unknown=4, NotChecked=114, Total=992 [2024-11-28 03:19:27,568 INFO L87 Difference]: Start difference. First operand 345 states and 394 transitions. Second operand has 32 states, 31 states have (on average 5.258064516129032) internal successors, (163), 32 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:29,941 INFO L93 Difference]: Finished difference Result 467 states and 513 transitions. [2024-11-28 03:19:29,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 03:19:29,943 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.258064516129032) internal successors, (163), 32 states have internal predecessors, (163), 0 states have call successors, (0), 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 55 [2024-11-28 03:19:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:29,944 INFO L225 Difference]: With dead ends: 467 [2024-11-28 03:19:29,944 INFO L226 Difference]: Without dead ends: 467 [2024-11-28 03:19:29,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=291, Invalid=1693, Unknown=4, NotChecked=174, Total=2162 [2024-11-28 03:19:29,946 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 1248 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 2391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 695 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:29,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1430 Invalid, 2391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1630 Invalid, 0 Unknown, 695 Unchecked, 1.6s Time] [2024-11-28 03:19:29,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-28 03:19:29,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 343. [2024-11-28 03:19:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 319 states have (on average 1.213166144200627) internal successors, (387), 341 states have internal predecessors, (387), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 391 transitions. [2024-11-28 03:19:29,956 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 391 transitions. Word has length 55 [2024-11-28 03:19:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:29,957 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 391 transitions. [2024-11-28 03:19:29,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.258064516129032) internal successors, (163), 32 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 391 transitions. [2024-11-28 03:19:29,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:19:29,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:29,958 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:19:29,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:19:30,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:30,163 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:19:30,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1902189017, now seen corresponding path program 1 times [2024-11-28 03:19:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:30,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697401876] [2024-11-28 03:19:30,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:30,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:31,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:31,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:19:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697401876] [2024-11-28 03:19:31,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697401876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:19:31,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774627814] [2024-11-28 03:19:31,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:19:31,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:19:31,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:19:31,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:19:31,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:19:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:19:31,387 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 03:19:31,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:19:31,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:19:31,432 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:19:31,432 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 11 treesize of output 11 [2024-11-28 03:19:31,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:19:31,505 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:19:31,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-28 03:19:31,595 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:19:31,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-11-28 03:19:31,837 INFO L349 Elim1Store]: treesize reduction 52, result has 34.2 percent of original size [2024-11-28 03:19:31,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 36 [2024-11-28 03:19:31,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:19:31,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2024-11-28 03:19:32,268 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:19:32,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2024-11-28 03:19:32,481 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:19:32,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2024-11-28 03:19:32,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:19:32,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-11-28 03:19:33,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:33,128 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:33,190 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1323 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1323) |c_ULTIMATE.start_main_~list~0#1.base|) (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) 1)) is different from false [2024-11-28 03:19:35,025 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:35,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:19:35,033 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 58 [2024-11-28 03:19:35,042 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 276 treesize of output 260 [2024-11-28 03:19:35,050 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:35,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 92 [2024-11-28 03:19:35,194 INFO L349 Elim1Store]: treesize reduction 256, result has 15.0 percent of original size [2024-11-28 03:19:35,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 202 treesize of output 208 [2024-11-28 03:19:35,222 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:35,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 58 [2024-11-28 03:19:35,265 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:19:35,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-28 03:19:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:19:43,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774627814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:43,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 40 [2024-11-28 03:19:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905645777] [2024-11-28 03:19:43,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:43,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:19:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:43,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:19:43,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1315, Unknown=32, NotChecked=76, Total=1640 [2024-11-28 03:19:43,383 INFO L87 Difference]: Start difference. First operand 343 states and 391 transitions. Second operand has 41 states, 40 states have (on average 3.525) internal successors, (141), 41 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:19:47,583 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 03:19:51,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:19:55,881 WARN L539 Checker$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 03:20:01,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:20:05,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:20:09,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:20:13,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 03:20:22,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:26,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:36,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:40,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:44,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:48,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 03:20:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:48,834 INFO L93 Difference]: Finished difference Result 564 states and 629 transitions. [2024-11-28 03:20:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:20:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 3.525) internal successors, (141), 41 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-28 03:20:48,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:48,837 INFO L225 Difference]: With dead ends: 564 [2024-11-28 03:20:48,837 INFO L226 Difference]: Without dead ends: 564 [2024-11-28 03:20:48,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=676, Invalid=3711, Unknown=39, NotChecked=130, Total=4556 [2024-11-28 03:20:48,839 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 1211 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 2246 mSolverCounterSat, 57 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2306 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2246 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 55.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:48,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 2306 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2246 Invalid, 31 Unknown, 449 Unchecked, 55.3s Time] [2024-11-28 03:20:48,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-28 03:20:48,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 377. [2024-11-28 03:20:48,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 353 states have (on average 1.2011331444759208) internal successors, (424), 375 states have internal predecessors, (424), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:48,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 428 transitions. [2024-11-28 03:20:48,848 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 428 transitions. Word has length 57 [2024-11-28 03:20:48,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:48,849 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 428 transitions. [2024-11-28 03:20:48,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 3.525) internal successors, (141), 41 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:20:48,849 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 428 transitions. [2024-11-28 03:20:48,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:20:48,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:48,850 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:20:48,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:20:49,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:49,055 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:20:49,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1902189016, now seen corresponding path program 1 times [2024-11-28 03:20:49,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:49,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973029167] [2024-11-28 03:20:49,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:50,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:50,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973029167] [2024-11-28 03:20:50,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973029167] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:50,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244676029] [2024-11-28 03:20:50,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:20:50,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:50,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:50,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:20:51,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:51,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 03:20:51,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:51,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:20:51,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-28 03:20:51,257 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:20:51,258 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 11 treesize of output 11 [2024-11-28 03:20:51,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:20:51,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:20:51,516 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:20:51,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-28 03:20:51,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:20:51,744 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:20:51,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2024-11-28 03:20:51,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:20:52,102 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 03:20:52,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-28 03:20:52,164 INFO L349 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2024-11-28 03:20:52,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-28 03:20:52,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:20:52,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:20:52,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:20:52,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 25 [2024-11-28 03:20:52,663 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:20:52,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 38 [2024-11-28 03:20:52,704 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:20:52,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:20:53,020 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:20:53,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 59 [2024-11-28 03:20:53,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:20:53,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:20:53,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-11-28 03:20:53,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:20:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:20:53,659 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:54,027 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_1437 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1437 (Array Int Int)) (v_ArrVal_1436 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1436) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:20:54,122 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_1437 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1437 (Array Int Int)) (v_ArrVal_1436 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1436) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:20:54,286 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (and (forall ((v_ArrVal_1437 (Array Int Int)) (v_ArrVal_1433 Int)) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1433)) |c_ULTIMATE.start_main_#t~malloc10#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1) 4))) (forall ((v_ArrVal_1437 (Array Int Int)) (v_ArrVal_1436 (Array Int Int)) (v_ArrVal_1433 Int)) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~end~0#1.offset| v_ArrVal_1433)) |c_ULTIMATE.start_main_#t~malloc10#1.base| v_ArrVal_1437) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1) 8) (select |c_#length| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset| |c_ULTIMATE.start_main_#t~malloc10#1.base|)) |c_ULTIMATE.start_main_#t~malloc10#1.base| v_ArrVal_1436) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:21:23,953 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:21:23,954 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 310 [2024-11-28 03:21:23,976 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:21:23,977 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 319 treesize of output 260 [2024-11-28 03:21:23,991 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 599 treesize of output 575 [2024-11-28 03:21:24,017 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 1389 treesize of output 1367 [2024-11-28 03:21:24,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 340 [2024-11-28 03:21:24,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 330 treesize of output 322 [2024-11-28 03:21:24,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 306 treesize of output 282 [2024-11-28 03:21:24,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 232 treesize of output 220 [2024-11-28 03:21:24,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2024-11-28 03:21:24,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 233 treesize of output 221 [2024-11-28 03:21:24,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 169 [2024-11-28 03:21:24,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 165 [2024-11-28 03:21:24,295 INFO L349 Elim1Store]: treesize reduction 8, result has 83.7 percent of original size [2024-11-28 03:21:24,295 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 178 treesize of output 210 [2024-11-28 03:21:24,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 173 [2024-11-28 03:21:24,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 166 [2024-11-28 03:21:24,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 139 [2024-11-28 03:21:24,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 135 [2024-11-28 03:21:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:21:24,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244676029] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:24,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:24,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 46 [2024-11-28 03:21:24,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157256098] [2024-11-28 03:21:24,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:24,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:21:24,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:24,750 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:21:24,750 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1638, Unknown=24, NotChecked=258, Total=2162 [2024-11-28 03:21:24,751 INFO L87 Difference]: Start difference. First operand 377 states and 428 transitions. Second operand has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:21:29,151 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 03:21:33,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:21:37,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:21:41,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:21:45,960 WARN L539 Checker$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 03:21:59,913 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 03:22:02,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:22:02,120 INFO L93 Difference]: Finished difference Result 588 states and 659 transitions. [2024-11-28 03:22:02,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:22:02,120 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 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 57 [2024-11-28 03:22:02,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:22:02,122 INFO L225 Difference]: With dead ends: 588 [2024-11-28 03:22:02,122 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 03:22:02,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 69 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1215 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=747, Invalid=3795, Unknown=26, NotChecked=402, Total=4970 [2024-11-28 03:22:02,124 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 1302 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 3433 mSolverCounterSat, 142 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 4918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 3433 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 1337 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:22:02,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 3246 Invalid, 4918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 3433 Invalid, 6 Unknown, 1337 Unchecked, 30.0s Time] [2024-11-28 03:22:02,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 03:22:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 379. [2024-11-28 03:22:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 356 states have (on average 1.1853932584269662) internal successors, (422), 377 states have internal predecessors, (422), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:02,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 426 transitions. [2024-11-28 03:22:02,133 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 426 transitions. Word has length 57 [2024-11-28 03:22:02,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:22:02,133 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 426 transitions. [2024-11-28 03:22:02,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 3.5434782608695654) internal successors, (163), 47 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:22:02,134 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 426 transitions. [2024-11-28 03:22:02,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:22:02,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:22:02,135 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:22:02,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:22:02,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2024-11-28 03:22:02,336 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:22:02,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:22:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1786346303, now seen corresponding path program 1 times [2024-11-28 03:22:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:22:02,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56866150] [2024-11-28 03:22:02,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:02,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:22:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:03,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:03,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:22:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56866150] [2024-11-28 03:22:03,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56866150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:22:03,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537505499] [2024-11-28 03:22:03,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:22:03,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:22:03,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:22:03,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:22:03,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:22:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:22:03,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 03:22:03,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:22:03,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:22:03,639 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 03:22:03,640 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 11 treesize of output 11 [2024-11-28 03:22:03,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:22:03,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:22:03,724 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:22:03,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-28 03:22:03,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:22:03,814 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:22:03,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-28 03:22:03,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:22:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:22:05,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:22:09,466 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:09,467 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 257 treesize of output 227 [2024-11-28 03:22:09,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:09,482 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 303 treesize of output 193 [2024-11-28 03:22:09,677 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:09,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 3893 treesize of output 3049 [2024-11-28 03:22:10,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:10,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 28 case distinctions, treesize of input 1739 treesize of output 2000 [2024-11-28 03:22:10,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:10,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 909 treesize of output 693 [2024-11-28 03:22:10,571 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:10,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 885 treesize of output 721 [2024-11-28 03:22:10,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:10,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 385 treesize of output 393 [2024-11-28 03:22:11,066 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:22:11,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 405 treesize of output 453 [2024-11-28 03:26:34,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 03:26:34,505 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 03:26:34,507 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 03:26:34,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:26:34,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-28 03:26:34,711 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-11-28 03:26:34,718 INFO L158 Benchmark]: Toolchain (without parser) took 660506.90ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 91.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 03:26:34,720 INFO L158 Benchmark]: CDTParser took 3.22ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:34,720 INFO L158 Benchmark]: CACSL2BoogieTranslator took 734.89ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 73.6MB in the end (delta: 18.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:26:34,720 INFO L158 Benchmark]: Boogie Procedure Inliner took 113.74ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 71.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:34,721 INFO L158 Benchmark]: Boogie Preprocessor took 113.22ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 68.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:26:34,721 INFO L158 Benchmark]: RCFGBuilder took 1531.17ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 38.1MB in the end (delta: 30.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:26:34,721 INFO L158 Benchmark]: TraceAbstraction took 657982.61ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 90.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 03:26:34,722 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.22ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 734.89ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 73.6MB in the end (delta: 18.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 113.74ms. Allocated memory is still 117.4MB. Free memory was 73.6MB in the beginning and 71.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 113.22ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 68.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1531.17ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 38.1MB in the end (delta: 30.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 657982.61ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 90.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/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_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-01-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:37,784 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:37,928 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 03:26:37,937 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:37,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:38,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:38,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:38,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:38,035 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:38,035 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:38,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:38,036 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:38,037 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:38,037 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:38,038 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:38,039 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:38,039 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:38,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:38,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:38,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:38,048 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:26:38,048 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:26:38,049 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:26:38,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:38,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:26:38,052 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:26:38,052 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:38,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:38,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:38,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:38,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:26:38,054 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:26:38,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:38,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:38,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:38,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:38,055 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_9f516f94-ba5e-414c-b07c-5a33d085b634/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> ba1a5c8c8cff607fde50280cfe0e0975858a4c6ed38f8443d26bb1773b66a31d [2024-11-28 03:26:38,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:38,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:38,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:38,462 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:38,462 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:38,464 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/forester-heap/sll-01-1.i [2024-11-28 03:26:42,242 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/2ce981e7a/9ba578ca8b5b46a6be8b061472ea40c4/FLAG608951d19 [2024-11-28 03:26:42,690 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:42,691 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/sv-benchmarks/c/forester-heap/sll-01-1.i [2024-11-28 03:26:42,715 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/2ce981e7a/9ba578ca8b5b46a6be8b061472ea40c4/FLAG608951d19 [2024-11-28 03:26:42,741 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/data/2ce981e7a/9ba578ca8b5b46a6be8b061472ea40c4 [2024-11-28 03:26:42,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:42,749 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:42,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:42,751 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:42,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:42,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d6efce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42, skipping insertion in model container [2024-11-28 03:26:42,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,821 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:43,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:43,322 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:43,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:43,462 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:43,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43 WrapperNode [2024-11-28 03:26:43,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:43,465 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:43,465 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:43,465 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:43,478 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,549 INFO L138 Inliner]: procedures = 120, calls = 54, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 211 [2024-11-28 03:26:43,550 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:43,551 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:43,551 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:43,551 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:43,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,617 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 11 writes are split as follows [0, 11]. [2024-11-28 03:26:43,619 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,619 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,639 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,660 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:43,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:43,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:43,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:43,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (1/1) ... [2024-11-28 03:26:43,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:43,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:43,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:43,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 03:26:43,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 03:26:43,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:26:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:26:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:26:43,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:26:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:26:43,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:26:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:26:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:26:43,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:43,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:43,938 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:43,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:44,987 INFO L? ?]: Removed 141 outVars from TransFormulas that were not future-live. [2024-11-28 03:26:44,988 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:45,018 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:45,018 INFO L312 CfgBuilder]: Removed 17 assume(true) statements. [2024-11-28 03:26:45,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:45 BoogieIcfgContainer [2024-11-28 03:26:45,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:45,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:45,024 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:45,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:45,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:42" (1/3) ... [2024-11-28 03:26:45,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fa8448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:45, skipping insertion in model container [2024-11-28 03:26:45,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:43" (2/3) ... [2024-11-28 03:26:45,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26fa8448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:45, skipping insertion in model container [2024-11-28 03:26:45,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:45" (3/3) ... [2024-11-28 03:26:45,040 INFO L128 eAbstractionObserver]: Analyzing ICFG sll-01-1.i [2024-11-28 03:26:45,062 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:45,065 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-01-1.i that has 2 procedures, 197 locations, 1 initial locations, 17 loop locations, and 66 error locations. [2024-11-28 03:26:45,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:45,163 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=None, 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;@3a30f727, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:45,164 INFO L334 AbstractCegarLoop]: Starting to check reachability of 66 error locations. [2024-11-28 03:26:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 116 states have (on average 2.0344827586206895) internal successors, (236), 182 states have internal predecessors, (236), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:26:45,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:26:45,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:45,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:26:45,179 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:45,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2024-11-28 03:26:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:45,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132101203] [2024-11-28 03:26:45,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:45,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:45,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:45,212 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:45,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:26:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:45,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:26:45,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:45,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:26:45,420 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 03:26:45,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:45,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:45,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132101203] [2024-11-28 03:26:45,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132101203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:45,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:45,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:45,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854695253] [2024-11-28 03:26:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:45,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:45,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:45,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:45,473 INFO L87 Difference]: Start difference. First operand has 197 states, 116 states have (on average 2.0344827586206895) internal successors, (236), 182 states have internal predecessors, (236), 13 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:45,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:45,980 INFO L93 Difference]: Finished difference Result 177 states and 201 transitions. [2024-11-28 03:26:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-28 03:26:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:45,992 INFO L225 Difference]: With dead ends: 177 [2024-11-28 03:26:45,992 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 03:26:45,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:26:45,997 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 156 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:45,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 127 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:26:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 03:26:46,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-28 03:26:46,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 104 states have (on average 1.7884615384615385) internal successors, (186), 173 states have internal predecessors, (186), 13 states have call successors, (13), 1 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-28 03:26:46,046 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 3 [2024-11-28 03:26:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:46,047 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-28 03:26:46,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-28 03:26:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:26:46,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:46,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:26:46,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:26:46,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:46,253 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:46,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:46,254 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2024-11-28 03:26:46,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:46,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490004297] [2024-11-28 03:26:46,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:46,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:46,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:46,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:46,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:26:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:46,338 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:26:46,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:46,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:26:46,380 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 03:26:46,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:46,381 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:46,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490004297] [2024-11-28 03:26:46,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490004297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:46,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:46,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:46,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064326172] [2024-11-28 03:26:46,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:46,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:46,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:46,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:46,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:46,419 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:46,948 INFO L93 Difference]: Finished difference Result 195 states and 223 transitions. [2024-11-28 03:26:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-28 03:26:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:46,951 INFO L225 Difference]: With dead ends: 195 [2024-11-28 03:26:46,952 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:26:46,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 03:26:46,953 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 154 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:46,954 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 151 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:26:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:26:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 185. [2024-11-28 03:26:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 121 states have (on average 1.7107438016528926) internal successors, (207), 183 states have internal predecessors, (207), 13 states have call successors, (13), 1 states have call predecessors, (13), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 220 transitions. [2024-11-28 03:26:46,968 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 220 transitions. Word has length 3 [2024-11-28 03:26:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:46,968 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 220 transitions. [2024-11-28 03:26:46,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:46,969 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 220 transitions. [2024-11-28 03:26:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:26:46,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:46,969 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:46,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:47,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:47,170 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:47,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1467462287, now seen corresponding path program 1 times [2024-11-28 03:26:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:47,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058962679] [2024-11-28 03:26:47,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:47,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:47,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:47,174 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:47,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:26:47,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:47,262 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:26:47,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:47,279 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 03:26:47,280 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:47,280 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:47,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058962679] [2024-11-28 03:26:47,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058962679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:47,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:47,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:47,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249636941] [2024-11-28 03:26:47,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:47,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:47,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:47,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:47,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:47,282 INFO L87 Difference]: Start difference. First operand 185 states and 220 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:47,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:47,396 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2024-11-28 03:26:47,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:47,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:26:47,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:47,398 INFO L225 Difference]: With dead ends: 196 [2024-11-28 03:26:47,399 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 03:26:47,399 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 03:26:47,400 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 157 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:47,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 211 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:26:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 03:26:47,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 184. [2024-11-28 03:26:47,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 121 states have (on average 1.6942148760330578) internal successors, (205), 182 states have internal predecessors, (205), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 217 transitions. [2024-11-28 03:26:47,418 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 217 transitions. Word has length 7 [2024-11-28 03:26:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:47,418 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 217 transitions. [2024-11-28 03:26:47,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 217 transitions. [2024-11-28 03:26:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:26:47,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:47,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:47,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:47,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:47,620 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:47,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash -463705026, now seen corresponding path program 1 times [2024-11-28 03:26:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064182463] [2024-11-28 03:26:47,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:47,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:47,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:47,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:47,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:26:47,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:47,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:26:47,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:47,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:26:47,758 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 03:26:47,796 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 23 treesize of output 11 [2024-11-28 03:26:47,812 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 03:26:47,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:47,813 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:47,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064182463] [2024-11-28 03:26:47,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064182463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:47,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:47,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:47,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166418101] [2024-11-28 03:26:47,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:47,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:47,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:47,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:47,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:47,815 INFO L87 Difference]: Start difference. First operand 184 states and 217 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:48,493 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-28 03:26:48,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:48,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:26:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:48,495 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:26:48,495 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:26:48,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:48,496 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:48,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 534 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:26:48,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:26:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-28 03:26:48,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 121 states have (on average 1.6859504132231404) internal successors, (204), 181 states have internal predecessors, (204), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:48,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2024-11-28 03:26:48,507 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 11 [2024-11-28 03:26:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:48,507 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2024-11-28 03:26:48,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2024-11-28 03:26:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 03:26:48,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:48,508 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:48,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:48,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:48,713 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:48,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash -463705025, now seen corresponding path program 1 times [2024-11-28 03:26:48,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:48,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1307346851] [2024-11-28 03:26:48,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:48,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:48,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:48,718 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:48,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:26:48,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:48,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:26:48,834 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:48,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:26:48,910 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 13 treesize of output 9 [2024-11-28 03:26:48,928 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 03:26:49,015 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 21 treesize of output 9 [2024-11-28 03:26:49,048 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 03:26:49,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:49,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:49,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307346851] [2024-11-28 03:26:49,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307346851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:49,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:49,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:49,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178419931] [2024-11-28 03:26:49,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:49,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:26:49,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:49,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:26:49,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:49,053 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:49,834 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2024-11-28 03:26:49,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:49,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 03:26:49,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:49,836 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:26:49,836 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:26:49,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:49,838 INFO L435 NwaCegarLoop]: 179 mSDtfsCounter, 1 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:49,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 545 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:26:49,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:26:49,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:26:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 121 states have (on average 1.677685950413223) internal successors, (203), 180 states have internal predecessors, (203), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2024-11-28 03:26:49,849 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 11 [2024-11-28 03:26:49,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:49,849 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2024-11-28 03:26:49,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2024-11-28 03:26:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:26:49,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:49,850 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:49,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:26:50,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:50,052 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:50,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:50,052 INFO L85 PathProgramCache]: Analyzing trace with hash 981250330, now seen corresponding path program 1 times [2024-11-28 03:26:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:50,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672846709] [2024-11-28 03:26:50,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:50,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:50,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:50,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:50,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:26:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:50,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:26:50,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:50,156 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 03:26:50,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:50,156 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672846709] [2024-11-28 03:26:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672846709] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:50,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:50,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:50,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172769885] [2024-11-28 03:26:50,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:50,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:50,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:50,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:50,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:50,159 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:50,182 INFO L93 Difference]: Finished difference Result 183 states and 216 transitions. [2024-11-28 03:26:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 03:26:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:50,184 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:26:50,184 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:26:50,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 03:26:50,185 INFO L435 NwaCegarLoop]: 181 mSDtfsCounter, 0 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:50,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:26:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:26:50,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2024-11-28 03:26:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 122 states have (on average 1.6721311475409837) internal successors, (204), 181 states have internal predecessors, (204), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 216 transitions. [2024-11-28 03:26:50,207 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 216 transitions. Word has length 15 [2024-11-28 03:26:50,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:50,208 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 216 transitions. [2024-11-28 03:26:50,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 216 transitions. [2024-11-28 03:26:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:26:50,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:50,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:50,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:26:50,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:50,410 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:50,411 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:50,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1621581763, now seen corresponding path program 1 times [2024-11-28 03:26:50,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [995893249] [2024-11-28 03:26:50,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:50,414 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:50,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:26:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:50,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:26:50,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:50,608 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:26:50,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:26:50,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:26:50,898 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:26:50,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:26:50,964 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 33 treesize of output 15 [2024-11-28 03:26:51,043 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 03:26:51,043 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:51,043 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995893249] [2024-11-28 03:26:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995893249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:51,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:51,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:51,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068442247] [2024-11-28 03:26:51,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:51,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:26:51,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:51,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:26:51,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:51,046 INFO L87 Difference]: Start difference. First operand 183 states and 216 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:52,105 INFO L93 Difference]: Finished difference Result 182 states and 215 transitions. [2024-11-28 03:26:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 03:26:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:52,107 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:26:52,107 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:26:52,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:26:52,108 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 143 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:52,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 420 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:26:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:26:52,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:26:52,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 122 states have (on average 1.6639344262295082) internal successors, (203), 180 states have internal predecessors, (203), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 215 transitions. [2024-11-28 03:26:52,123 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 215 transitions. Word has length 14 [2024-11-28 03:26:52,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:52,123 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 215 transitions. [2024-11-28 03:26:52,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:52,123 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 215 transitions. [2024-11-28 03:26:52,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:26:52,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:52,124 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:52,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:26:52,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:52,325 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:52,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:52,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1621581762, now seen corresponding path program 1 times [2024-11-28 03:26:52,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:52,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [185941273] [2024-11-28 03:26:52,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:52,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:52,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:52,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:52,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:26:52,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:52,433 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:26:52,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:52,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:26:52,508 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:26:52,509 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 13 treesize of output 13 [2024-11-28 03:26:52,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:26:52,571 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 13 treesize of output 9 [2024-11-28 03:26:52,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:26:52,752 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:26:52,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:26:52,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:26:52,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:26:52,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:26:52,873 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 03:26:52,873 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:52,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185941273] [2024-11-28 03:26:52,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185941273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:52,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:52,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:26:52,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873475529] [2024-11-28 03:26:52,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:52,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:26:52,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:52,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:26:52,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:52,876 INFO L87 Difference]: Start difference. First operand 182 states and 215 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:53,921 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2024-11-28 03:26:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 03:26:53,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:53,923 INFO L225 Difference]: With dead ends: 181 [2024-11-28 03:26:53,923 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 03:26:53,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:26:53,924 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 148 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:53,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 409 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:26:53,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 03:26:53,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-28 03:26:53,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 122 states have (on average 1.6557377049180328) internal successors, (202), 179 states have internal predecessors, (202), 12 states have call successors, (12), 1 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 214 transitions. [2024-11-28 03:26:53,931 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 214 transitions. Word has length 14 [2024-11-28 03:26:53,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:53,931 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 214 transitions. [2024-11-28 03:26:53,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:53,931 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 214 transitions. [2024-11-28 03:26:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 03:26:53,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:53,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:53,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:26:54,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:54,133 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:54,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:54,134 INFO L85 PathProgramCache]: Analyzing trace with hash -701450337, now seen corresponding path program 1 times [2024-11-28 03:26:54,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:54,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892685567] [2024-11-28 03:26:54,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:54,136 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:54,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:26:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:54,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:26:54,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:54,393 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 03:26:54,393 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:54,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:54,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892685567] [2024-11-28 03:26:54,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892685567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:54,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:54,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:26:54,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434242597] [2024-11-28 03:26:54,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:54,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:26:54,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:54,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:26:54,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:54,396 INFO L87 Difference]: Start difference. First operand 181 states and 214 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:55,223 INFO L93 Difference]: Finished difference Result 258 states and 304 transitions. [2024-11-28 03:26:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:26:55,225 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 03:26:55,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:55,231 INFO L225 Difference]: With dead ends: 258 [2024-11-28 03:26:55,232 INFO L226 Difference]: Without dead ends: 258 [2024-11-28 03:26:55,232 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:26:55,233 INFO L435 NwaCegarLoop]: 156 mSDtfsCounter, 83 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:55,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 829 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:26:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-28 03:26:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 182. [2024-11-28 03:26:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 124 states have (on average 1.6370967741935485) internal successors, (203), 180 states have internal predecessors, (203), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:55,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 214 transitions. [2024-11-28 03:26:55,245 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 214 transitions. Word has length 17 [2024-11-28 03:26:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:55,245 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 214 transitions. [2024-11-28 03:26:55,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 214 transitions. [2024-11-28 03:26:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:26:55,246 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:55,246 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] [2024-11-28 03:26:55,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:26:55,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:55,447 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:55,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:55,448 INFO L85 PathProgramCache]: Analyzing trace with hash -656842709, now seen corresponding path program 1 times [2024-11-28 03:26:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753209741] [2024-11-28 03:26:55,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:55,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:55,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:55,451 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:55,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:26:55,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:55,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:26:55,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:55,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:26:55,664 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:26:55,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:26:55,669 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 03:26:55,670 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:55,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:55,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753209741] [2024-11-28 03:26:55,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753209741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:55,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:55,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:55,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110821854] [2024-11-28 03:26:55,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:55,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:55,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:55,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:55,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:55,671 INFO L87 Difference]: Start difference. First operand 182 states and 214 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:56,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:56,204 INFO L93 Difference]: Finished difference Result 174 states and 206 transitions. [2024-11-28 03:26:56,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:56,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:26:56,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:56,209 INFO L225 Difference]: With dead ends: 174 [2024-11-28 03:26:56,209 INFO L226 Difference]: Without dead ends: 174 [2024-11-28 03:26:56,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:56,210 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 207 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:56,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 121 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:26:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-28 03:26:56,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-28 03:26:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 127 states have (on average 1.5354330708661417) internal successors, (195), 172 states have internal predecessors, (195), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:56,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 206 transitions. [2024-11-28 03:26:56,219 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 206 transitions. Word has length 20 [2024-11-28 03:26:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:56,221 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 206 transitions. [2024-11-28 03:26:56,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 206 transitions. [2024-11-28 03:26:56,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:26:56,222 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:56,222 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] [2024-11-28 03:26:56,234 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:56,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:56,423 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:56,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -656842708, now seen corresponding path program 1 times [2024-11-28 03:26:56,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:56,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140979640] [2024-11-28 03:26:56,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:56,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:56,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:56,427 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:56,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:26:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:56,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:26:56,528 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:56,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:26:56,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:26:56,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:26:56,856 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:26:56,856 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 13 treesize of output 13 [2024-11-28 03:26:56,876 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 03:26:56,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:56,877 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:56,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140979640] [2024-11-28 03:26:56,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140979640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:56,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:56,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:26:56,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454925521] [2024-11-28 03:26:56,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:56,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:56,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:56,878 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:56,878 INFO L87 Difference]: Start difference. First operand 174 states and 206 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:57,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:57,753 INFO L93 Difference]: Finished difference Result 215 states and 248 transitions. [2024-11-28 03:26:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:26:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:57,755 INFO L225 Difference]: With dead ends: 215 [2024-11-28 03:26:57,755 INFO L226 Difference]: Without dead ends: 215 [2024-11-28 03:26:57,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:57,756 INFO L435 NwaCegarLoop]: 98 mSDtfsCounter, 199 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:57,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 269 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:26:57,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-28 03:26:57,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 196. [2024-11-28 03:26:57,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 149 states have (on average 1.5369127516778522) internal successors, (229), 194 states have internal predecessors, (229), 11 states have call successors, (11), 1 states have call predecessors, (11), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:57,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2024-11-28 03:26:57,764 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 20 [2024-11-28 03:26:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:57,764 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2024-11-28 03:26:57,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2024-11-28 03:26:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:26:57,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:57,765 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 03:26:57,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:26:57,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:57,966 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:57,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash 37329395, now seen corresponding path program 1 times [2024-11-28 03:26:57,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:57,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242327004] [2024-11-28 03:26:57,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:57,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:57,969 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:57,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:26:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:58,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:26:58,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:58,122 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 03:26:58,122 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:58,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242327004] [2024-11-28 03:26:58,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242327004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:58,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:58,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:26:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051417958] [2024-11-28 03:26:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:58,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:58,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:58,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:58,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:58,124 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:58,476 INFO L93 Difference]: Finished difference Result 216 states and 248 transitions. [2024-11-28 03:26:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 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 03:26:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:58,478 INFO L225 Difference]: With dead ends: 216 [2024-11-28 03:26:58,478 INFO L226 Difference]: Without dead ends: 216 [2024-11-28 03:26:58,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:26:58,479 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 200 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:58,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 281 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:26:58,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-28 03:26:58,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 195. [2024-11-28 03:26:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 149 states have (on average 1.523489932885906) internal successors, (227), 193 states have internal predecessors, (227), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 237 transitions. [2024-11-28 03:26:58,489 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 237 transitions. Word has length 23 [2024-11-28 03:26:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:58,489 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 237 transitions. [2024-11-28 03:26:58,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 237 transitions. [2024-11-28 03:26:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:26:58,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:58,491 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] [2024-11-28 03:26:58,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:26:58,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:58,696 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:58,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash 263021357, now seen corresponding path program 1 times [2024-11-28 03:26:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709005867] [2024-11-28 03:26:58,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:58,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:58,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:58,701 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:58,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:26:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:58,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:26:58,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:58,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:26:58,836 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 03:26:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:26:58,889 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 03:26:58,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:58,889 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:26:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709005867] [2024-11-28 03:26:58,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709005867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:58,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:26:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041234664] [2024-11-28 03:26:58,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:58,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:26:58,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:58,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:58,892 INFO L87 Difference]: Start difference. First operand 195 states and 237 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:59,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:26:59,726 INFO L93 Difference]: Finished difference Result 195 states and 237 transitions. [2024-11-28 03:26:59,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:26:59,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 03:26:59,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:26:59,728 INFO L225 Difference]: With dead ends: 195 [2024-11-28 03:26:59,728 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 03:26:59,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:26:59,729 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 73 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:26:59,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 424 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:26:59,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 03:26:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2024-11-28 03:26:59,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 149 states have (on average 1.516778523489933) internal successors, (226), 192 states have internal predecessors, (226), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:59,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 236 transitions. [2024-11-28 03:26:59,736 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 236 transitions. Word has length 24 [2024-11-28 03:26:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:26:59,736 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 236 transitions. [2024-11-28 03:26:59,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:26:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 236 transitions. [2024-11-28 03:26:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:26:59,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:26:59,740 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] [2024-11-28 03:26:59,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:59,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:59,941 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:26:59,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:59,942 INFO L85 PathProgramCache]: Analyzing trace with hash 263021358, now seen corresponding path program 1 times [2024-11-28 03:26:59,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:26:59,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598175281] [2024-11-28 03:26:59,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:59,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:59,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:59,944 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:59,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:27:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:00,034 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:27:00,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:00,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:27:00,079 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 03:27:00,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:00,135 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 17 treesize of output 9 [2024-11-28 03:27:00,191 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 03:27:00,191 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:00,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598175281] [2024-11-28 03:27:00,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598175281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:00,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:00,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:27:00,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042652701] [2024-11-28 03:27:00,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:00,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:00,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:00,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:00,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:00,193 INFO L87 Difference]: Start difference. First operand 194 states and 236 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:00,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:00,971 INFO L93 Difference]: Finished difference Result 186 states and 228 transitions. [2024-11-28 03:27:00,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:27:00,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2024-11-28 03:27:00,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:00,972 INFO L225 Difference]: With dead ends: 186 [2024-11-28 03:27:00,972 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 03:27:00,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:27:00,973 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 36 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:00,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 503 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 03:27:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 179. [2024-11-28 03:27:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 143 states have (on average 1.4685314685314685) internal successors, (210), 177 states have internal predecessors, (210), 10 states have call successors, (10), 1 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:00,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 220 transitions. [2024-11-28 03:27:00,979 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 220 transitions. Word has length 24 [2024-11-28 03:27:00,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:00,979 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 220 transitions. [2024-11-28 03:27:00,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:00,980 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 220 transitions. [2024-11-28 03:27:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 03:27:00,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:00,980 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] [2024-11-28 03:27:00,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 03:27:01,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:01,181 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:01,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash -420525490, now seen corresponding path program 1 times [2024-11-28 03:27:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:01,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806226076] [2024-11-28 03:27:01,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:01,185 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:01,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:27:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:01,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:27:01,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:01,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:01,337 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-28 03:27:01,365 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 03:27:01,365 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:01,365 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:01,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806226076] [2024-11-28 03:27:01,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806226076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:01,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:01,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:01,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282164890] [2024-11-28 03:27:01,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:01,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:01,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:01,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:01,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:01,367 INFO L87 Difference]: Start difference. First operand 179 states and 220 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:01,780 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2024-11-28 03:27:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:27:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-28 03:27:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:01,781 INFO L225 Difference]: With dead ends: 184 [2024-11-28 03:27:01,782 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 03:27:01,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:27:01,782 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 35 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:01,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 617 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:27:01,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 03:27:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 177. [2024-11-28 03:27:01,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 143 states have (on average 1.4545454545454546) internal successors, (208), 175 states have internal predecessors, (208), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 216 transitions. [2024-11-28 03:27:01,789 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 216 transitions. Word has length 28 [2024-11-28 03:27:01,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:01,789 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 216 transitions. [2024-11-28 03:27:01,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:01,790 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 216 transitions. [2024-11-28 03:27:01,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:27:01,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:01,791 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] [2024-11-28 03:27:01,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:27:01,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:01,992 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:01,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:01,992 INFO L85 PathProgramCache]: Analyzing trace with hash -675665190, now seen corresponding path program 1 times [2024-11-28 03:27:01,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:01,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730817666] [2024-11-28 03:27:01,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:01,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:01,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:01,997 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:01,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:27:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:02,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:27:02,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:02,136 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 03:27:02,136 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:02,136 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730817666] [2024-11-28 03:27:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730817666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:02,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:27:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502712973] [2024-11-28 03:27:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:02,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:02,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:02,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:02,140 INFO L87 Difference]: Start difference. First operand 177 states and 216 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:02,161 INFO L93 Difference]: Finished difference Result 189 states and 230 transitions. [2024-11-28 03:27:02,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:02,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:27:02,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:02,163 INFO L225 Difference]: With dead ends: 189 [2024-11-28 03:27:02,164 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 03:27:02,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 03:27:02,166 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 7 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:02,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 289 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:27:02,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 03:27:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2024-11-28 03:27:02,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 149 states have (on average 1.4496644295302012) internal successors, (216), 181 states have internal predecessors, (216), 8 states have call successors, (8), 1 states have call predecessors, (8), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2024-11-28 03:27:02,176 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 30 [2024-11-28 03:27:02,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:02,176 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2024-11-28 03:27:02,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,176 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2024-11-28 03:27:02,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:27:02,177 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:02,177 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] [2024-11-28 03:27:02,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:27:02,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:02,378 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:02,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:02,378 INFO L85 PathProgramCache]: Analyzing trace with hash 393950009, now seen corresponding path program 1 times [2024-11-28 03:27:02,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:02,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598527124] [2024-11-28 03:27:02,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:02,381 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:02,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:27:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:02,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:27:02,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:02,502 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 03:27:02,502 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:02,502 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:02,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598527124] [2024-11-28 03:27:02,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598527124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:02,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:02,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:27:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012717280] [2024-11-28 03:27:02,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:02,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:02,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:02,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:02,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:02,504 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:02,552 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2024-11-28 03:27:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:02,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 03:27:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:02,554 INFO L225 Difference]: With dead ends: 182 [2024-11-28 03:27:02,554 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:27:02,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 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 03:27:02,554 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 11 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:02,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 263 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:27:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:27:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-28 03:27:02,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 149 states have (on average 1.436241610738255) internal successors, (214), 180 states have internal predecessors, (214), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 221 transitions. [2024-11-28 03:27:02,561 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 221 transitions. Word has length 31 [2024-11-28 03:27:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:02,561 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 221 transitions. [2024-11-28 03:27:02,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 221 transitions. [2024-11-28 03:27:02,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:27:02,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:02,562 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] [2024-11-28 03:27:02,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 03:27:02,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:02,763 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:02,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:02,763 INFO L85 PathProgramCache]: Analyzing trace with hash -680030663, now seen corresponding path program 1 times [2024-11-28 03:27:02,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:02,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221917597] [2024-11-28 03:27:02,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:02,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:02,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:02,765 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:02,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:27:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:02,862 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:27:02,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:02,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:02,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:03,150 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 03:27:03,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:03,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:03,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221917597] [2024-11-28 03:27:03,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221917597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:03,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:03,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:27:03,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881838305] [2024-11-28 03:27:03,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:03,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:27:03,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:03,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:27:03,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:27:03,152 INFO L87 Difference]: Start difference. First operand 182 states and 221 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:04,151 INFO L93 Difference]: Finished difference Result 298 states and 348 transitions. [2024-11-28 03:27:04,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:27:04,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 03:27:04,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:04,153 INFO L225 Difference]: With dead ends: 298 [2024-11-28 03:27:04,153 INFO L226 Difference]: Without dead ends: 298 [2024-11-28 03:27:04,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:27:04,154 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 295 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:04,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 646 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:27:04,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-28 03:27:04,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 219. [2024-11-28 03:27:04,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 186 states have (on average 1.3763440860215055) internal successors, (256), 217 states have internal predecessors, (256), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:04,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 263 transitions. [2024-11-28 03:27:04,162 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 263 transitions. Word has length 30 [2024-11-28 03:27:04,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:04,163 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 263 transitions. [2024-11-28 03:27:04,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:04,163 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 263 transitions. [2024-11-28 03:27:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 03:27:04,164 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:04,164 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] [2024-11-28 03:27:04,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:27:04,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:04,365 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:04,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1766175305, now seen corresponding path program 1 times [2024-11-28 03:27:04,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:04,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094426920] [2024-11-28 03:27:04,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:04,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:04,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:04,367 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:04,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:27:04,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:04,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:27:04,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:04,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:04,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:04,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 03:27:04,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 03:27:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:04,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:05,007 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:05,007 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:05,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094426920] [2024-11-28 03:27:05,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094426920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:05,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:27:05,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-11-28 03:27:05,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582761901] [2024-11-28 03:27:05,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:05,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:05,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:05,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:05,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:05,009 INFO L87 Difference]: Start difference. First operand 219 states and 263 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:05,773 INFO L93 Difference]: Finished difference Result 294 states and 350 transitions. [2024-11-28 03:27:05,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:27:05,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-28 03:27:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:05,775 INFO L225 Difference]: With dead ends: 294 [2024-11-28 03:27:05,776 INFO L226 Difference]: Without dead ends: 294 [2024-11-28 03:27:05,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:05,776 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 125 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:05,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 451 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:27:05,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-28 03:27:05,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 256. [2024-11-28 03:27:05,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 223 states have (on average 1.3721973094170403) internal successors, (306), 254 states have internal predecessors, (306), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:05,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 313 transitions. [2024-11-28 03:27:05,785 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 313 transitions. Word has length 33 [2024-11-28 03:27:05,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:05,786 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 313 transitions. [2024-11-28 03:27:05,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:05,786 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 313 transitions. [2024-11-28 03:27:05,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:27:05,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:05,787 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] [2024-11-28 03:27:05,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:27:05,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:05,988 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:05,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:05,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1063035240, now seen corresponding path program 1 times [2024-11-28 03:27:05,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:05,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040204477] [2024-11-28 03:27:05,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:05,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:05,991 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:05,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:27:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:06,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:27:06,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:06,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:27:06,146 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 03:27:06,151 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 13 treesize of output 9 [2024-11-28 03:27:06,197 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 21 treesize of output 9 [2024-11-28 03:27:06,219 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 03:27:06,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:06,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:06,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040204477] [2024-11-28 03:27:06,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040204477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:06,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:06,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:27:06,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474295051] [2024-11-28 03:27:06,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:06,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:27:06,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:06,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:27:06,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:27:06,221 INFO L87 Difference]: Start difference. First operand 256 states and 313 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:06,756 INFO L93 Difference]: Finished difference Result 255 states and 312 transitions. [2024-11-28 03:27:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:27:06,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-28 03:27:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:06,758 INFO L225 Difference]: With dead ends: 255 [2024-11-28 03:27:06,758 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 03:27:06,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:06,759 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 2 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:06,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 427 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:27:06,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 03:27:06,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-28 03:27:06,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 223 states have (on average 1.3677130044843049) internal successors, (305), 253 states have internal predecessors, (305), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:06,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 312 transitions. [2024-11-28 03:27:06,767 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 312 transitions. Word has length 34 [2024-11-28 03:27:06,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:06,767 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 312 transitions. [2024-11-28 03:27:06,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:06,768 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 312 transitions. [2024-11-28 03:27:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:27:06,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:06,768 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] [2024-11-28 03:27:06,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:27:06,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:06,969 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:06,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1063035239, now seen corresponding path program 1 times [2024-11-28 03:27:06,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:06,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687097347] [2024-11-28 03:27:06,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:06,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:06,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:06,973 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:06,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:27:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:07,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:27:07,089 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:07,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:07,110 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 03:27:07,136 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 23 treesize of output 11 [2024-11-28 03:27:07,150 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 03:27:07,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:07,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:07,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687097347] [2024-11-28 03:27:07,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687097347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:07,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:07,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:27:07,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896763100] [2024-11-28 03:27:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:07,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:27:07,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:07,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:27:07,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:27:07,152 INFO L87 Difference]: Start difference. First operand 255 states and 312 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:07,633 INFO L93 Difference]: Finished difference Result 254 states and 311 transitions. [2024-11-28 03:27:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:27:07,634 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-28 03:27:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:07,635 INFO L225 Difference]: With dead ends: 254 [2024-11-28 03:27:07,635 INFO L226 Difference]: Without dead ends: 254 [2024-11-28 03:27:07,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:07,636 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 1 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:07,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 424 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:27:07,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-28 03:27:07,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-28 03:27:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 223 states have (on average 1.3632286995515694) internal successors, (304), 252 states have internal predecessors, (304), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 311 transitions. [2024-11-28 03:27:07,658 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 311 transitions. Word has length 34 [2024-11-28 03:27:07,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:07,658 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 311 transitions. [2024-11-28 03:27:07,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 311 transitions. [2024-11-28 03:27:07,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:27:07,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:07,659 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] [2024-11-28 03:27:07,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:07,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:07,860 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:07,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 634644650, now seen corresponding path program 1 times [2024-11-28 03:27:07,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:07,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [321021267] [2024-11-28 03:27:07,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:07,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:07,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:07,863 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:07,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:27:07,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:07,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:27:07,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:07,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:08,063 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:27:08,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:27:08,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:08,256 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:08,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 03:27:08,369 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:08,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 03:27:08,654 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 27 treesize of output 15 [2024-11-28 03:27:08,825 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 03:27:08,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:08,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321021267] [2024-11-28 03:27:08,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321021267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:08,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:08,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:27:08,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954221492] [2024-11-28 03:27:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:08,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:27:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:08,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:27:08,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:27:08,827 INFO L87 Difference]: Start difference. First operand 254 states and 311 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:10,717 INFO L93 Difference]: Finished difference Result 311 states and 362 transitions. [2024-11-28 03:27:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:27:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:27:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:10,720 INFO L225 Difference]: With dead ends: 311 [2024-11-28 03:27:10,720 INFO L226 Difference]: Without dead ends: 311 [2024-11-28 03:27:10,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:27:10,722 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 223 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:10,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 828 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:27:10,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-28 03:27:10,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 257. [2024-11-28 03:27:10,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 226 states have (on average 1.3539823008849559) internal successors, (306), 255 states have internal predecessors, (306), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:10,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 313 transitions. [2024-11-28 03:27:10,732 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 313 transitions. Word has length 35 [2024-11-28 03:27:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:10,733 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 313 transitions. [2024-11-28 03:27:10,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 313 transitions. [2024-11-28 03:27:10,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:27:10,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:10,734 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] [2024-11-28 03:27:10,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:10,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:10,934 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:10,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 634644651, now seen corresponding path program 1 times [2024-11-28 03:27:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:10,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657084065] [2024-11-28 03:27:10,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:10,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:10,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:10,937 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:10,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:27:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:11,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:27:11,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:11,100 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:27:11,100 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 13 treesize of output 13 [2024-11-28 03:27:11,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:27:11,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:11,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:11,282 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:11,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:27:11,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:27:11,411 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:11,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:27:11,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:27:11,694 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 25 treesize of output 13 [2024-11-28 03:27:11,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:27:11,778 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 03:27:11,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:11,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:11,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657084065] [2024-11-28 03:27:11,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657084065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:11,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:11,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:27:11,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214285684] [2024-11-28 03:27:11,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:11,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:27:11,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:11,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:27:11,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:11,780 INFO L87 Difference]: Start difference. First operand 257 states and 313 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:13,747 INFO L93 Difference]: Finished difference Result 319 states and 371 transitions. [2024-11-28 03:27:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:27:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:27:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:13,749 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:27:13,749 INFO L226 Difference]: Without dead ends: 319 [2024-11-28 03:27:13,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:27:13,750 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 283 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:13,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 858 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:27:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-28 03:27:13,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 263. [2024-11-28 03:27:13,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 232 states have (on average 1.3491379310344827) internal successors, (313), 261 states have internal predecessors, (313), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 320 transitions. [2024-11-28 03:27:13,759 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 320 transitions. Word has length 35 [2024-11-28 03:27:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:13,759 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 320 transitions. [2024-11-28 03:27:13,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 320 transitions. [2024-11-28 03:27:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:27:13,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:13,760 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] [2024-11-28 03:27:13,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:13,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:13,961 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:13,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:13,962 INFO L85 PathProgramCache]: Analyzing trace with hash 47458798, now seen corresponding path program 1 times [2024-11-28 03:27:13,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [733788663] [2024-11-28 03:27:13,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:13,966 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:13,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:27:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:14,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:27:14,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:14,112 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 03:27:14,112 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:14,112 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733788663] [2024-11-28 03:27:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733788663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:27:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817710267] [2024-11-28 03:27:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:14,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:14,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:14,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:14,114 INFO L87 Difference]: Start difference. First operand 263 states and 320 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:14,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:14,128 INFO L93 Difference]: Finished difference Result 265 states and 322 transitions. [2024-11-28 03:27:14,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:14,129 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:27:14,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:14,130 INFO L225 Difference]: With dead ends: 265 [2024-11-28 03:27:14,130 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 03:27:14,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 03:27:14,131 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:14,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:27:14,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 03:27:14,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-28 03:27:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 234 states have (on average 1.3461538461538463) internal successors, (315), 263 states have internal predecessors, (315), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 322 transitions. [2024-11-28 03:27:14,140 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 322 transitions. Word has length 38 [2024-11-28 03:27:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:14,140 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 322 transitions. [2024-11-28 03:27:14,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:14,140 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 322 transitions. [2024-11-28 03:27:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:27:14,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:14,141 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] [2024-11-28 03:27:14,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:27:14,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:14,342 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:14,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:14,342 INFO L85 PathProgramCache]: Analyzing trace with hash 2089077647, now seen corresponding path program 1 times [2024-11-28 03:27:14,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:14,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [49815525] [2024-11-28 03:27:14,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:14,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:14,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:14,345 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:14,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:27:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:14,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:27:14,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:14,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:14,502 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 03:27:14,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:27:14,590 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:27:14,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:27:14,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:14,746 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:27:14,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:27:14,781 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 33 treesize of output 15 [2024-11-28 03:27:14,830 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 03:27:14,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:14,830 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:14,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49815525] [2024-11-28 03:27:14,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49815525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:14,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:27:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001553103] [2024-11-28 03:27:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:14,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:27:14,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:14,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:27:14,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:27:14,832 INFO L87 Difference]: Start difference. First operand 265 states and 322 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:16,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:16,082 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2024-11-28 03:27:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:27:16,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-28 03:27:16,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:16,084 INFO L225 Difference]: With dead ends: 266 [2024-11-28 03:27:16,084 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 03:27:16,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:27:16,085 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 55 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:16,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 692 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:27:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 03:27:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2024-11-28 03:27:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 234 states have (on average 1.3418803418803418) internal successors, (314), 262 states have internal predecessors, (314), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 321 transitions. [2024-11-28 03:27:16,092 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 321 transitions. Word has length 37 [2024-11-28 03:27:16,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:16,092 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 321 transitions. [2024-11-28 03:27:16,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 321 transitions. [2024-11-28 03:27:16,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 03:27:16,093 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:16,093 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] [2024-11-28 03:27:16,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:27:16,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:16,298 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:16,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:16,298 INFO L85 PathProgramCache]: Analyzing trace with hash 2089077648, now seen corresponding path program 1 times [2024-11-28 03:27:16,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:16,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222730243] [2024-11-28 03:27:16,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:16,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:16,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:16,301 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:16,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:27:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:16,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 03:27:16,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:16,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:16,463 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 03:27:16,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:27:16,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-11-28 03:27:16,537 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:27:16,537 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 13 treesize of output 13 [2024-11-28 03:27:16,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:16,577 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 13 treesize of output 9 [2024-11-28 03:27:16,723 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:27:16,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:27:16,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:27:16,765 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 31 treesize of output 13 [2024-11-28 03:27:16,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:27:16,798 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 03:27:16,799 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:16,799 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:16,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222730243] [2024-11-28 03:27:16,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222730243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:16,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:16,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:27:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223138402] [2024-11-28 03:27:16,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:16,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:27:16,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:16,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:27:16,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:27:16,801 INFO L87 Difference]: Start difference. First operand 264 states and 321 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:18,008 INFO L93 Difference]: Finished difference Result 265 states and 322 transitions. [2024-11-28 03:27:18,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:27:18,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-28 03:27:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:18,010 INFO L225 Difference]: With dead ends: 265 [2024-11-28 03:27:18,010 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 03:27:18,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:27:18,011 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 60 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:18,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 663 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:27:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 03:27:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2024-11-28 03:27:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 234 states have (on average 1.3376068376068375) internal successors, (313), 261 states have internal predecessors, (313), 7 states have call successors, (7), 1 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 320 transitions. [2024-11-28 03:27:18,020 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 320 transitions. Word has length 37 [2024-11-28 03:27:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:18,021 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 320 transitions. [2024-11-28 03:27:18,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 320 transitions. [2024-11-28 03:27:18,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:27:18,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:18,022 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] [2024-11-28 03:27:18,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:18,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:18,222 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:18,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:18,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1994733467, now seen corresponding path program 1 times [2024-11-28 03:27:18,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:18,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448075443] [2024-11-28 03:27:18,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:18,228 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:18,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 03:27:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:18,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:27:18,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:18,368 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 03:27:18,369 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:18,369 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:18,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448075443] [2024-11-28 03:27:18,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448075443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:18,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:18,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:27:18,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265810976] [2024-11-28 03:27:18,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:18,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:18,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:18,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:18,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:18,371 INFO L87 Difference]: Start difference. First operand 263 states and 320 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:18,525 INFO L93 Difference]: Finished difference Result 266 states and 321 transitions. [2024-11-28 03:27:18,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:18,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:27:18,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:18,527 INFO L225 Difference]: With dead ends: 266 [2024-11-28 03:27:18,527 INFO L226 Difference]: Without dead ends: 266 [2024-11-28 03:27:18,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 03:27:18,527 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 71 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:18,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 176 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:27:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-28 03:27:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 262. [2024-11-28 03:27:18,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 234 states have (on average 1.329059829059829) internal successors, (311), 260 states have internal predecessors, (311), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 317 transitions. [2024-11-28 03:27:18,535 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 317 transitions. Word has length 39 [2024-11-28 03:27:18,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:18,535 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 317 transitions. [2024-11-28 03:27:18,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:18,535 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 317 transitions. [2024-11-28 03:27:18,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 03:27:18,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:18,536 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] [2024-11-28 03:27:18,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 03:27:18,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:18,737 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:18,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1449820831, now seen corresponding path program 1 times [2024-11-28 03:27:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:18,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [449885706] [2024-11-28 03:27:18,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:18,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:18,739 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:27:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:18,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:27:18,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:19,185 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 03:27:19,185 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:19,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:19,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449885706] [2024-11-28 03:27:19,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449885706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:19,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:19,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:27:19,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174271643] [2024-11-28 03:27:19,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:19,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:27:19,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:19,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:27:19,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:27:19,186 INFO L87 Difference]: Start difference. First operand 262 states and 317 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:19,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:19,895 INFO L93 Difference]: Finished difference Result 319 states and 383 transitions. [2024-11-28 03:27:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:27:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 03:27:19,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:19,897 INFO L225 Difference]: With dead ends: 319 [2024-11-28 03:27:19,897 INFO L226 Difference]: Without dead ends: 319 [2024-11-28 03:27:19,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:19,898 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 30 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:19,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 720 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:27:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-28 03:27:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 307. [2024-11-28 03:27:19,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 279 states have (on average 1.3225806451612903) internal successors, (369), 305 states have internal predecessors, (369), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:19,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 375 transitions. [2024-11-28 03:27:19,906 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 375 transitions. Word has length 38 [2024-11-28 03:27:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:19,907 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 375 transitions. [2024-11-28 03:27:19,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 375 transitions. [2024-11-28 03:27:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:27:19,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:19,908 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] [2024-11-28 03:27:19,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 03:27:20,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:20,109 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:20,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:20,109 INFO L85 PathProgramCache]: Analyzing trace with hash -746876152, now seen corresponding path program 1 times [2024-11-28 03:27:20,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:20,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900101252] [2024-11-28 03:27:20,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:20,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:20,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:20,112 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:20,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 03:27:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:20,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-28 03:27:20,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:20,346 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:27:20,347 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 13 treesize of output 13 [2024-11-28 03:27:20,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:20,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:20,507 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:20,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 38 [2024-11-28 03:27:20,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:27:20,608 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:27:20,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 33 [2024-11-28 03:27:20,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-28 03:27:21,263 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 03:27:21,263 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:21,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:21,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900101252] [2024-11-28 03:27:21,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900101252] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:21,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:21,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:27:21,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511105647] [2024-11-28 03:27:21,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:21,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:27:21,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:21,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:27:21,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:27:21,265 INFO L87 Difference]: Start difference. First operand 307 states and 375 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:23,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:23,615 INFO L93 Difference]: Finished difference Result 364 states and 424 transitions. [2024-11-28 03:27:23,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:27:23,616 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:27:23,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:23,617 INFO L225 Difference]: With dead ends: 364 [2024-11-28 03:27:23,618 INFO L226 Difference]: Without dead ends: 364 [2024-11-28 03:27:23,618 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:27:23,618 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 376 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:23,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 928 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:27:23,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-28 03:27:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 307. [2024-11-28 03:27:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 279 states have (on average 1.3154121863799284) internal successors, (367), 305 states have internal predecessors, (367), 6 states have call successors, (6), 1 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 373 transitions. [2024-11-28 03:27:23,627 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 373 transitions. Word has length 39 [2024-11-28 03:27:23,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:23,627 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 373 transitions. [2024-11-28 03:27:23,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:23,628 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 373 transitions. [2024-11-28 03:27:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 03:27:23,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:23,629 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] [2024-11-28 03:27:23,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:23,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,829 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:23,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash -315225709, now seen corresponding path program 1 times [2024-11-28 03:27:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447215307] [2024-11-28 03:27:23,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:23,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:23,832 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:23,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:27:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:23,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:27:23,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:24,121 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 03:27:24,121 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:24,121 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:24,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447215307] [2024-11-28 03:27:24,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447215307] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:24,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:24,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:27:24,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347093617] [2024-11-28 03:27:24,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:24,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:27:24,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:24,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:27:24,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:27:24,123 INFO L87 Difference]: Start difference. First operand 307 states and 373 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:24,803 INFO L93 Difference]: Finished difference Result 316 states and 380 transitions. [2024-11-28 03:27:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:27:24,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2024-11-28 03:27:24,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:24,805 INFO L225 Difference]: With dead ends: 316 [2024-11-28 03:27:24,805 INFO L226 Difference]: Without dead ends: 316 [2024-11-28 03:27:24,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:27:24,807 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 12 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:24,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 668 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:27:24,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-28 03:27:24,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 307. [2024-11-28 03:27:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 280 states have (on average 1.3035714285714286) internal successors, (365), 305 states have internal predecessors, (365), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:24,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 370 transitions. [2024-11-28 03:27:24,814 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 370 transitions. Word has length 40 [2024-11-28 03:27:24,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:24,815 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 370 transitions. [2024-11-28 03:27:24,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:24,815 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 370 transitions. [2024-11-28 03:27:24,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:27:24,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:24,816 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] [2024-11-28 03:27:24,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:27:25,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,017 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:25,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:25,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2063233724, now seen corresponding path program 1 times [2024-11-28 03:27:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1861823518] [2024-11-28 03:27:25,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:25,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:25,020 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:25,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 03:27:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:27:25,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:25,243 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 03:27:25,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:25,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861823518] [2024-11-28 03:27:25,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861823518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:25,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:25,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:27:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29330866] [2024-11-28 03:27:25,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:25,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:25,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:25,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:25,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:25,245 INFO L87 Difference]: Start difference. First operand 307 states and 370 transitions. Second operand has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:25,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:25,381 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2024-11-28 03:27:25,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:25,381 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:27:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:25,383 INFO L225 Difference]: With dead ends: 315 [2024-11-28 03:27:25,383 INFO L226 Difference]: Without dead ends: 315 [2024-11-28 03:27:25,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 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 03:27:25,384 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 86 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:25,384 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 146 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:27:25,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-28 03:27:25,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 308. [2024-11-28 03:27:25,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 281 states have (on average 1.302491103202847) internal successors, (366), 306 states have internal predecessors, (366), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:25,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 371 transitions. [2024-11-28 03:27:25,390 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 371 transitions. Word has length 39 [2024-11-28 03:27:25,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:25,390 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 371 transitions. [2024-11-28 03:27:25,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.5) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:25,391 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 371 transitions. [2024-11-28 03:27:25,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:27:25,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:25,391 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, 1] [2024-11-28 03:27:25,403 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 03:27:25,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,592 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:25,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:25,592 INFO L85 PathProgramCache]: Analyzing trace with hash 730999830, now seen corresponding path program 1 times [2024-11-28 03:27:25,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2065255957] [2024-11-28 03:27:25,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:25,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:25,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:25,597 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:25,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:27:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:25,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:27:25,770 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:25,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:25,832 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:27:25,833 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 13 treesize of output 13 [2024-11-28 03:27:25,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:25,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:27:25,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2024-11-28 03:27:25,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2024-11-28 03:27:26,196 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:27:26,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 54 [2024-11-28 03:27:26,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 25 [2024-11-28 03:27:27,194 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 03:27:27,194 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:27,194 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065255957] [2024-11-28 03:27:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065255957] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:27,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:27,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:27:27,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842774741] [2024-11-28 03:27:27,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:27,195 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:27:27,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:27,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:27:27,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:27:27,196 INFO L87 Difference]: Start difference. First operand 308 states and 371 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:29,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:29,946 INFO L93 Difference]: Finished difference Result 365 states and 421 transitions. [2024-11-28 03:27:29,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:27:29,946 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-28 03:27:29,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:29,947 INFO L225 Difference]: With dead ends: 365 [2024-11-28 03:27:29,947 INFO L226 Difference]: Without dead ends: 365 [2024-11-28 03:27:29,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:27:29,948 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 361 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:29,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 880 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 03:27:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2024-11-28 03:27:29,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 308. [2024-11-28 03:27:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 281 states have (on average 1.295373665480427) internal successors, (364), 306 states have internal predecessors, (364), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 369 transitions. [2024-11-28 03:27:29,957 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 369 transitions. Word has length 42 [2024-11-28 03:27:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:29,957 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 369 transitions. [2024-11-28 03:27:29,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 369 transitions. [2024-11-28 03:27:29,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:27:29,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:29,958 INFO L218 NwaCegarLoop]: trace histogram [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, 1] [2024-11-28 03:27:29,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:27:30,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:30,158 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:30,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 519386200, now seen corresponding path program 1 times [2024-11-28 03:27:30,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:30,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [640853957] [2024-11-28 03:27:30,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:30,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:30,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:30,161 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:30,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 03:27:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:30,289 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:27:30,291 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:30,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:30,764 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 03:27:30,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2024-11-28 03:27:30,787 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 03:27:30,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 12 [2024-11-28 03:27:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:30,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:30,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640853957] [2024-11-28 03:27:30,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640853957] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:30,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:27:30,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2024-11-28 03:27:30,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682057625] [2024-11-28 03:27:30,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:30,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:27:30,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:30,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:27:30,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:30,853 INFO L87 Difference]: Start difference. First operand 308 states and 369 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:32,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:32,228 INFO L93 Difference]: Finished difference Result 398 states and 464 transitions. [2024-11-28 03:27:32,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:27:32,228 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-28 03:27:32,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:32,230 INFO L225 Difference]: With dead ends: 398 [2024-11-28 03:27:32,230 INFO L226 Difference]: Without dead ends: 398 [2024-11-28 03:27:32,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:27:32,231 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 340 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:32,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 908 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:27:32,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2024-11-28 03:27:32,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 332. [2024-11-28 03:27:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 305 states have (on average 1.3049180327868852) internal successors, (398), 330 states have internal predecessors, (398), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 403 transitions. [2024-11-28 03:27:32,239 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 403 transitions. Word has length 42 [2024-11-28 03:27:32,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:32,240 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 403 transitions. [2024-11-28 03:27:32,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 11 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 403 transitions. [2024-11-28 03:27:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:27:32,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:32,241 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, 1, 1] [2024-11-28 03:27:32,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 03:27:32,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:32,442 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:32,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:32,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1078891740, now seen corresponding path program 1 times [2024-11-28 03:27:32,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:32,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1597386438] [2024-11-28 03:27:32,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:32,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:32,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:32,444 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:32,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:27:32,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:32,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:27:32,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:32,856 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~list~0#1.base_43| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~list~0#1.base_43|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~list~0#1.base_43| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-28 03:27:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2024-11-28 03:27:32,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:27:33,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597386438] [2024-11-28 03:27:33,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597386438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:27:33,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:27:33,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2024-11-28 03:27:33,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249226338] [2024-11-28 03:27:33,102 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:27:33,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:27:33,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:33,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:27:33,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-28 03:27:33,104 INFO L87 Difference]: Start difference. First operand 332 states and 403 transitions. Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:33,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:33,535 INFO L93 Difference]: Finished difference Result 349 states and 419 transitions. [2024-11-28 03:27:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:27:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:27:33,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:33,536 INFO L225 Difference]: With dead ends: 349 [2024-11-28 03:27:33,536 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 03:27:33,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2024-11-28 03:27:33,537 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 1 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:33,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 302 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 174 Unchecked, 0.4s Time] [2024-11-28 03:27:33,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 03:27:33,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-28 03:27:33,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 297 states have (on average 1.3097643097643097) internal successors, (389), 322 states have internal predecessors, (389), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:33,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 394 transitions. [2024-11-28 03:27:33,544 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 394 transitions. Word has length 43 [2024-11-28 03:27:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:33,544 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 394 transitions. [2024-11-28 03:27:33,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 394 transitions. [2024-11-28 03:27:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:27:33,545 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:33,545 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, 1, 1] [2024-11-28 03:27:33,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 03:27:33,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:33,750 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:33,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:33,750 INFO L85 PathProgramCache]: Analyzing trace with hash 167894032, now seen corresponding path program 1 times [2024-11-28 03:27:33,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:33,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855007327] [2024-11-28 03:27:33,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:33,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:33,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:33,752 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:33,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 03:27:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:33,898 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:27:33,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:34,193 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 25 treesize of output 17 [2024-11-28 03:27:34,196 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 21 treesize of output 13 [2024-11-28 03:27:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:34,239 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:34,239 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:34,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855007327] [2024-11-28 03:27:34,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855007327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:34,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:34,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:27:34,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715963480] [2024-11-28 03:27:34,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:34,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:27:34,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:34,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:27:34,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:27:34,241 INFO L87 Difference]: Start difference. First operand 324 states and 394 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:35,414 INFO L93 Difference]: Finished difference Result 370 states and 433 transitions. [2024-11-28 03:27:35,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:27:35,415 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-28 03:27:35,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:35,416 INFO L225 Difference]: With dead ends: 370 [2024-11-28 03:27:35,416 INFO L226 Difference]: Without dead ends: 370 [2024-11-28 03:27:35,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:27:35,417 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 273 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:35,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 695 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:27:35,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-28 03:27:35,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 323. [2024-11-28 03:27:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 296 states have (on average 1.3074324324324325) internal successors, (387), 321 states have internal predecessors, (387), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 392 transitions. [2024-11-28 03:27:35,424 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 392 transitions. Word has length 43 [2024-11-28 03:27:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:35,425 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 392 transitions. [2024-11-28 03:27:35,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,425 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 392 transitions. [2024-11-28 03:27:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:27:35,426 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:35,426 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, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:35,438 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 03:27:35,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:35,627 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:35,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:35,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1429806982, now seen corresponding path program 1 times [2024-11-28 03:27:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305423967] [2024-11-28 03:27:35,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:35,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:35,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:35,630 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:35,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 03:27:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:35,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:27:35,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:35,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:35,804 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:35,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:35,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305423967] [2024-11-28 03:27:35,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305423967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:35,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:35,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:27:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151362984] [2024-11-28 03:27:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:35,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:27:35,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:35,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:27:35,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:27:35,805 INFO L87 Difference]: Start difference. First operand 323 states and 392 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:35,824 INFO L93 Difference]: Finished difference Result 396 states and 491 transitions. [2024-11-28 03:27:35,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:27:35,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:27:35,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:35,826 INFO L225 Difference]: With dead ends: 396 [2024-11-28 03:27:35,826 INFO L226 Difference]: Without dead ends: 396 [2024-11-28 03:27:35,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 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 03:27:35,827 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 13 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:35,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 290 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:27:35,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-28 03:27:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 372. [2024-11-28 03:27:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 345 states have (on average 1.3565217391304347) internal successors, (468), 370 states have internal predecessors, (468), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 473 transitions. [2024-11-28 03:27:35,832 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 473 transitions. Word has length 47 [2024-11-28 03:27:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:35,833 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 473 transitions. [2024-11-28 03:27:35,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 473 transitions. [2024-11-28 03:27:35,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 03:27:35,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:35,834 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:35,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 03:27:36,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:36,035 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:36,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:36,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1425501091, now seen corresponding path program 1 times [2024-11-28 03:27:36,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:36,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500954895] [2024-11-28 03:27:36,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:36,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:36,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:36,038 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:36,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 03:27:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:36,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:27:36,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:36,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:36,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:36,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500954895] [2024-11-28 03:27:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500954895] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:27:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743438122] [2024-11-28 03:27:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:36,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:27:36,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:36,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:27:36,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:36,287 INFO L87 Difference]: Start difference. First operand 372 states and 473 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:36,678 INFO L93 Difference]: Finished difference Result 297 states and 342 transitions. [2024-11-28 03:27:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:27:36,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 03:27:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:36,680 INFO L225 Difference]: With dead ends: 297 [2024-11-28 03:27:36,680 INFO L226 Difference]: Without dead ends: 297 [2024-11-28 03:27:36,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:27:36,681 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:36,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 559 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:27:36,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-28 03:27:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2024-11-28 03:27:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 294 states have internal predecessors, (337), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 341 transitions. [2024-11-28 03:27:36,686 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 341 transitions. Word has length 47 [2024-11-28 03:27:36,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:36,686 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 341 transitions. [2024-11-28 03:27:36,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:36,687 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 341 transitions. [2024-11-28 03:27:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 03:27:36,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:36,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:27:36,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-28 03:27:36,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:36,888 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:36,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1657372056, now seen corresponding path program 1 times [2024-11-28 03:27:36,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:36,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337350725] [2024-11-28 03:27:36,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:36,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:36,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:36,891 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:36,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 03:27:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:37,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:27:37,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:37,101 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-28 03:27:37,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2024-11-28 03:27:37,186 INFO L349 Elim1Store]: treesize reduction 34, result has 26.1 percent of original size [2024-11-28 03:27:37,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2024-11-28 03:27:37,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 03:27:37,396 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:27:37,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 40 [2024-11-28 03:27:37,517 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:27:37,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 03:27:37,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:37,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2024-11-28 03:27:37,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-28 03:27:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:27:37,824 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:27:37,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:27:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337350725] [2024-11-28 03:27:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337350725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:27:37,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:27:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 03:27:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135333266] [2024-11-28 03:27:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:27:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:27:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:27:37,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:27:37,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:27:37,826 INFO L87 Difference]: Start difference. First operand 296 states and 341 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 03:27:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:27:39,256 INFO L93 Difference]: Finished difference Result 323 states and 370 transitions. [2024-11-28 03:27:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:27:39,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-11-28 03:27:39,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:27:39,258 INFO L225 Difference]: With dead ends: 323 [2024-11-28 03:27:39,258 INFO L226 Difference]: Without dead ends: 294 [2024-11-28 03:27:39,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:27:39,259 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 456 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:27:39,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 491 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:27:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-28 03:27:39,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 271. [2024-11-28 03:27:39,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 245 states have (on average 1.2653061224489797) internal successors, (310), 269 states have internal predecessors, (310), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:27:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 314 transitions. [2024-11-28 03:27:39,264 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 314 transitions. Word has length 50 [2024-11-28 03:27:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:27:39,265 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 314 transitions. [2024-11-28 03:27:39,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 10 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 03:27:39,265 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 314 transitions. [2024-11-28 03:27:39,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:27:39,266 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:27:39,266 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:27:39,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 03:27:39,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:39,466 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:27:39,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:27:39,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1418947348, now seen corresponding path program 1 times [2024-11-28 03:27:39,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:27:39,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459882372] [2024-11-28 03:27:39,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:27:39,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:27:39,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:27:39,472 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:27:39,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 03:27:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:27:39,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:27:39,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:27:39,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:27:39,753 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:27:39,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:27:39,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:27:39,975 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:27:39,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2024-11-28 03:27:40,106 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:27:40,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-28 03:27:40,387 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 27 treesize of output 15 [2024-11-28 03:27:40,483 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:27:40,483 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:27:40,769 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_951 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|) v_ArrVal_951) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2024-11-28 03:27:40,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:40,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-28 03:27:40,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:27:40,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 41 [2024-11-28 03:27:40,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-28 03:28:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:02,955 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:02,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459882372] [2024-11-28 03:28:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459882372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:02,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:02,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-28 03:28:02,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250738415] [2024-11-28 03:28:02,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:28:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:02,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:28:02,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=322, Unknown=18, NotChecked=38, Total=462 [2024-11-28 03:28:02,959 INFO L87 Difference]: Start difference. First operand 271 states and 314 transitions. Second operand has 22 states, 21 states have (on average 5.190476190476191) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:10,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:10,732 INFO L93 Difference]: Finished difference Result 469 states and 533 transitions. [2024-11-28 03:28:10,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:28:10,733 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.190476190476191) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 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 55 [2024-11-28 03:28:10,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:10,735 INFO L225 Difference]: With dead ends: 469 [2024-11-28 03:28:10,735 INFO L226 Difference]: Without dead ends: 469 [2024-11-28 03:28:10,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=135, Invalid=498, Unknown=21, NotChecked=48, Total=702 [2024-11-28 03:28:10,736 INFO L435 NwaCegarLoop]: 131 mSDtfsCounter, 653 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 1481 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1465 SdHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:10,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 1465 Invalid, 1879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1481 Invalid, 0 Unknown, 359 Unchecked, 3.5s Time] [2024-11-28 03:28:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-28 03:28:10,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 320. [2024-11-28 03:28:10,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 318 states have internal predecessors, (372), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:10,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 376 transitions. [2024-11-28 03:28:10,743 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 376 transitions. Word has length 55 [2024-11-28 03:28:10,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:10,743 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 376 transitions. [2024-11-28 03:28:10,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.190476190476191) internal successors, (109), 22 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:10,743 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 376 transitions. [2024-11-28 03:28:10,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:28:10,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:10,744 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:28:10,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-28 03:28:10,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:10,945 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:28:10,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:10,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1418947347, now seen corresponding path program 1 times [2024-11-28 03:28:10,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:10,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2042659812] [2024-11-28 03:28:10,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:10,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:10,948 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:10,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-28 03:28:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:11,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 03:28:11,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:11,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:28:11,190 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:28:11,190 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 13 treesize of output 13 [2024-11-28 03:28:11,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:28:11,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:11,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 03:28:11,437 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:28:11,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:28:11,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 03:28:11,474 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:28:11,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2024-11-28 03:28:11,648 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-28 03:28:11,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-28 03:28:11,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-28 03:28:12,001 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 25 treesize of output 13 [2024-11-28 03:28:12,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 03:28:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:12,084 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:12,562 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_993) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))))) is different from false [2024-11-28 03:28:12,687 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_993) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32)))))) is different from false [2024-11-28 03:28:12,721 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|))) (and (forall ((v_ArrVal_993 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_993) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)))) (forall ((v_ArrVal_994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_994) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-28 03:28:12,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:12,762 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2024-11-28 03:28:12,773 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:12,773 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-28 03:28:12,795 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:12,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2024-11-28 03:28:12,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:12,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2024-11-28 03:28:12,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 03:28:12,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-28 03:28:12,981 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:12,982 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 30 [2024-11-28 03:28:13,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:13,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:28:13,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:13,293 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:13,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042659812] [2024-11-28 03:28:13,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042659812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:13,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:13,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-28 03:28:13,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350821448] [2024-11-28 03:28:13,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:13,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:28:13,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:13,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:28:13,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=260, Unknown=3, NotChecked=102, Total=420 [2024-11-28 03:28:13,295 INFO L87 Difference]: Start difference. First operand 320 states and 376 transitions. Second operand has 21 states, 20 states have (on average 4.75) internal successors, (95), 21 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 03:28:18,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:18,057 INFO L93 Difference]: Finished difference Result 448 states and 511 transitions. [2024-11-28 03:28:18,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:28:18,058 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 21 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 55 [2024-11-28 03:28:18,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:18,060 INFO L225 Difference]: With dead ends: 448 [2024-11-28 03:28:18,060 INFO L226 Difference]: Without dead ends: 448 [2024-11-28 03:28:18,060 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=170, Invalid=769, Unknown=3, NotChecked=180, Total=1122 [2024-11-28 03:28:18,061 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 586 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 997 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:18,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 1091 Invalid, 2404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1376 Invalid, 0 Unknown, 997 Unchecked, 3.9s Time] [2024-11-28 03:28:18,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2024-11-28 03:28:18,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 337. [2024-11-28 03:28:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 311 states have (on average 1.2765273311897105) internal successors, (397), 335 states have internal predecessors, (397), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:18,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 401 transitions. [2024-11-28 03:28:18,067 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 401 transitions. Word has length 55 [2024-11-28 03:28:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:18,067 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 401 transitions. [2024-11-28 03:28:18,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 21 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 03:28:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 401 transitions. [2024-11-28 03:28:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:28:18,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:18,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:18,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-28 03:28:18,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:18,270 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:28:18,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:18,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1303382859, now seen corresponding path program 1 times [2024-11-28 03:28:18,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:18,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360749271] [2024-11-28 03:28:18,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:18,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:18,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:18,273 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:18,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-28 03:28:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:18,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:28:18,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:18,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:28:18,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:18,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:18,940 INFO L349 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2024-11-28 03:28:18,940 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 22 treesize of output 21 [2024-11-28 03:28:19,035 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 03:28:19,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 03:28:19,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:19,088 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:19,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360749271] [2024-11-28 03:28:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360749271] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:19,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2024-11-28 03:28:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449865219] [2024-11-28 03:28:19,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:19,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:28:19,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:19,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:28:19,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:28:19,089 INFO L87 Difference]: Start difference. First operand 337 states and 401 transitions. Second operand has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 13 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 03:28:20,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:20,824 INFO L93 Difference]: Finished difference Result 455 states and 530 transitions. [2024-11-28 03:28:20,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:28:20,825 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 13 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 55 [2024-11-28 03:28:20,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:20,827 INFO L225 Difference]: With dead ends: 455 [2024-11-28 03:28:20,827 INFO L226 Difference]: Without dead ends: 455 [2024-11-28 03:28:20,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:28:20,827 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 380 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:20,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 696 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:28:20,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-28 03:28:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 402. [2024-11-28 03:28:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 376 states have (on average 1.2925531914893618) internal successors, (486), 400 states have internal predecessors, (486), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 490 transitions. [2024-11-28 03:28:20,835 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 490 transitions. Word has length 55 [2024-11-28 03:28:20,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:20,835 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 490 transitions. [2024-11-28 03:28:20,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.666666666666666) internal successors, (104), 13 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 03:28:20,836 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 490 transitions. [2024-11-28 03:28:20,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:28:20,837 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:20,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:20,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-28 03:28:21,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:21,040 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:28:21,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1303382860, now seen corresponding path program 1 times [2024-11-28 03:28:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:21,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534708503] [2024-11-28 03:28:21,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:21,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:21,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:21,043 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-28 03:28:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:21,248 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:28:21,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:21,913 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 23 treesize of output 15 [2024-11-28 03:28:21,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 23 [2024-11-28 03:28:22,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:22,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:22,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:22,729 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 56 treesize of output 58 [2024-11-28 03:28:27,304 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:27,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 54 [2024-11-28 03:28:27,354 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-28 03:28:27,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 40 [2024-11-28 03:28:27,476 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:27,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:27,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534708503] [2024-11-28 03:28:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534708503] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:27,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:27,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2024-11-28 03:28:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270090226] [2024-11-28 03:28:27,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:27,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:28:27,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:27,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:28:27,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:28:27,478 INFO L87 Difference]: Start difference. First operand 402 states and 490 transitions. Second operand has 17 states, 16 states have (on average 6.8125) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:28:32,358 INFO L93 Difference]: Finished difference Result 454 states and 528 transitions. [2024-11-28 03:28:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:28:32,359 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.8125) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 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 55 [2024-11-28 03:28:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:28:32,361 INFO L225 Difference]: With dead ends: 454 [2024-11-28 03:28:32,361 INFO L226 Difference]: Without dead ends: 454 [2024-11-28 03:28:32,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=185, Invalid=627, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:28:32,362 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 311 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:28:32,363 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1081 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 03:28:32,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2024-11-28 03:28:32,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 408. [2024-11-28 03:28:32,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 382 states have (on average 1.2827225130890052) internal successors, (490), 406 states have internal predecessors, (490), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 494 transitions. [2024-11-28 03:28:32,370 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 494 transitions. Word has length 55 [2024-11-28 03:28:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:28:32,370 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 494 transitions. [2024-11-28 03:28:32,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.8125) internal successors, (109), 17 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:28:32,370 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 494 transitions. [2024-11-28 03:28:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:28:32,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:28:32,371 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:28:32,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-28 03:28:32,572 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:32,572 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 63 more)] === [2024-11-28 03:28:32,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:28:32,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1889328466, now seen corresponding path program 1 times [2024-11-28 03:28:32,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:28:32,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564345462] [2024-11-28 03:28:32,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:28:32,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:28:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:32,575 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:28:32,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f516f94-ba5e-414c-b07c-5a33d085b634/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-28 03:28:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:28:32,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-28 03:28:32,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:28:32,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 7 [2024-11-28 03:28:32,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:32,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:28:33,088 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 03:28:33,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 03:28:33,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:28:33,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:28:33,452 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-28 03:28:33,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 31 [2024-11-28 03:28:33,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:28:33,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 03:28:33,677 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-28 03:28:33,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-28 03:28:33,793 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 03:28:33,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 03:28:33,886 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-28 03:28:33,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 56 treesize of output 35 [2024-11-28 03:28:34,178 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2024-11-28 03:28:34,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 75 treesize of output 71 [2024-11-28 03:28:34,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 11 [2024-11-28 03:28:34,469 INFO L349 Elim1Store]: treesize reduction 48, result has 18.6 percent of original size [2024-11-28 03:28:34,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 79 [2024-11-28 03:28:34,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 11 [2024-11-28 03:28:35,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:35,197 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:28:35,403 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1116) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem15#1.base| v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0) (_ bv0 32))))) is different from false [2024-11-28 03:28:35,426 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) (bvadd |c_ULTIMATE.start_main_~end~0#1.offset| (_ bv4 32)))) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1) (_ bv0 32))) (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1116) |c_ULTIMATE.start_main_~list~0#1.base|) .cse1) (_ bv0 32))))) is different from false [2024-11-28 03:28:35,470 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~end~0#1.offset| (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_1113))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1116)) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))) (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem14#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse2) (_ bv0 32))))) is different from false [2024-11-28 03:28:35,500 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~end~0#1.offset| (_ bv4 32)))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) .cse1)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_1113))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1116)) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (forall ((v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse2 v_ArrVal_1114) (select (select (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))) is different from false [2024-11-28 03:28:35,545 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (let ((.cse1 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse2 .cse1 |c_ULTIMATE.start_main_#t~malloc13#1.base|)) |c_ULTIMATE.start_main_#t~malloc13#1.base| v_ArrVal_1113))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1116))) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3))) (forall ((v_ArrVal_1110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1110) |c_ULTIMATE.start_main_#t~malloc13#1.base| v_ArrVal_1114) (let ((.cse4 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| (store .cse2 .cse4 |c_ULTIMATE.start_main_#t~malloc13#1.base|)) |c_ULTIMATE.start_main_#t~malloc13#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) .cse4)) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3) (_ bv0 32))))) is different from false [2024-11-28 03:28:36,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:36,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 39 [2024-11-28 03:28:36,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:36,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2024-11-28 03:28:36,154 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_6 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse2 (select v_arrayElimArr_6 .cse1))) (or (= (_ bv0 32) (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_6) .cse2 v_ArrVal_1113))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~end~0#1.base|) .cse1) v_ArrVal_1116)) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)) (not (= (_ bv0 1) (select |c_#valid| .cse2))))))) (forall ((v_ArrVal_1110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse4 (select v_arrayElimArr_5 .cse5))) (or (not (= (_ bv0 1) (select |c_#valid| .cse4))) (= (_ bv0 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~end~0#1.base| v_ArrVal_1110) .cse4 v_ArrVal_1114) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base| v_arrayElimArr_5) .cse4 v_ArrVal_1113) |c_ULTIMATE.start_main_~end~0#1.base|) .cse5) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))))) is different from false [2024-11-28 03:28:36,205 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_6 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse0 (select v_arrayElimArr_6 .cse2))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (_ bv0 32) (select (select (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_arrayElimArr_6) .cse0 v_ArrVal_1113))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_#t~mem11#1.base|) .cse2) v_ArrVal_1116)) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))) (forall ((v_ArrVal_1110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~end~0#1.offset| (_ BitVec 32)) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (bvadd (_ bv4 32) |ULTIMATE.start_main_~end~0#1.offset|))) (let ((.cse4 (select v_arrayElimArr_5 .cse5))) (or (not (= (_ bv0 1) (select |c_#valid| .cse4))) (= (_ bv0 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem11#1.base| v_ArrVal_1110) .cse4 v_ArrVal_1114) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem11#1.base| v_arrayElimArr_5) .cse4 v_ArrVal_1113) |c_ULTIMATE.start_main_#t~mem11#1.base|) .cse5) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))))) is different from false [2024-11-28 03:28:36,257 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~end~0#1.base|) |c_ULTIMATE.start_main_~end~0#1.offset|)) (.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (and (forall ((v_subst_11 (_ BitVec 32)) (v_ArrVal_1110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1115 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1114 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_5 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd v_subst_11 (_ bv4 32)))) (let ((.cse0 (select v_arrayElimArr_5 .cse2))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (_ bv0 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1110) .cse0 v_ArrVal_1114) (select (select (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_5) .cse0 v_ArrVal_1113) .cse1) .cse2) v_ArrVal_1115) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))) (forall ((v_ArrVal_1116 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1113 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_12 (_ BitVec 32)) (v_arrayElimArr_6 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (bvadd v_subst_12 (_ bv4 32)))) (let ((.cse4 (select v_arrayElimArr_6 .cse6))) (or (not (= (_ bv0 1) (select |c_#valid| .cse4))) (= (_ bv0 32) (select (select (let ((.cse5 (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_6) .cse4 v_ArrVal_1113))) (store .cse5 (select (select .cse5 .cse1) .cse6) v_ArrVal_1116)) |c_ULTIMATE.start_main_~list~0#1.base|) .cse3)))))))) is different from false [2024-11-28 03:28:40,044 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 57 [2024-11-28 03:28:40,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4784 treesize of output 3790 [2024-11-28 03:28:40,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1226 treesize of output 1118 [2024-11-28 03:28:40,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,335 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 1131 treesize of output 911 [2024-11-28 03:28:40,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,398 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 894 treesize of output 734 [2024-11-28 03:28:40,688 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,689 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 64 treesize of output 70 [2024-11-28 03:28:40,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:28:40,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 57 [2024-11-28 03:28:40,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 97 [2024-11-28 03:28:40,760 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:28:40,765 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 130 treesize of output 112 [2024-11-28 03:28:40,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 54 [2024-11-28 03:28:40,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-28 03:28:40,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 60 [2024-11-28 03:28:40,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2024-11-28 03:28:44,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:28:44,060 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:28:44,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564345462] [2024-11-28 03:28:44,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564345462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:28:44,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:28:44,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 32 [2024-11-28 03:28:44,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668401512] [2024-11-28 03:28:44,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:28:44,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:28:44,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:28:44,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:28:44,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=450, Unknown=22, NotChecked=408, Total=992 [2024-11-28 03:28:44,062 INFO L87 Difference]: Start difference. First operand 408 states and 494 transitions. Second operand has 32 states, 32 states have (on average 3.34375) internal successors, (107), 32 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 03:28:49,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:28:53,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:29:00,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0]