./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:03:44,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:03:44,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:03:44,880 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:03:44,880 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:03:44,905 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:03:44,905 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:03:44,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:03:44,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:03:44,906 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:03:44,906 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:03:44,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:03:44,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:03:44,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:03:44,907 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:03:44,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:03:44,908 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:03:44,909 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:03:44,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:03:44,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:44,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:44,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:44,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:44,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:44,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:03:44,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:03:44,912 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:03:44,912 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:03:44,912 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:03:44,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:03:44,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:03:44,912 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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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 -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2024-11-28 04:03:45,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:03:45,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:03:45,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:03:45,252 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:03:45,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:03:45,255 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2024-11-28 04:03:48,248 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0d2ae91/fea73d88ec7445638210c293fcbfdb66/FLAGd1cc72154 [2024-11-28 04:03:48,597 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:03:48,602 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2024-11-28 04:03:48,621 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0d2ae91/fea73d88ec7445638210c293fcbfdb66/FLAGd1cc72154 [2024-11-28 04:03:48,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0d2ae91/fea73d88ec7445638210c293fcbfdb66 [2024-11-28 04:03:48,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:03:48,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:03:48,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:48,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:03:48,652 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:03:48,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:48" (1/1) ... [2024-11-28 04:03:48,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b82cdc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:48, skipping insertion in model container [2024-11-28 04:03:48,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:03:48" (1/1) ... [2024-11-28 04:03:48,687 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:03:49,019 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:03:49,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:49,047 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:03:49,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:03:49,168 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:03:49,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49 WrapperNode [2024-11-28 04:03:49,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:03:49,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:49,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:03:49,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:03:49,178 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,194 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,231 INFO L138 Inliner]: procedures = 168, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 94 [2024-11-28 04:03:49,233 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:03:49,234 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:03:49,234 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:03:49,234 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:03:49,244 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,249 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,280 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [9, 9, 6]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [6, 9, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 04:03:49,280 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,280 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,290 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,293 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,296 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,297 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,298 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,300 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:03:49,301 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:03:49,301 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:03:49,301 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:03:49,302 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (1/1) ... [2024-11-28 04:03:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:03:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:49,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:03:49,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:03:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:03:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:03:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:03:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-28 04:03:49,382 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-28 04:03:49,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:03:49,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:03:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:03:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:03:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:03:49,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:03:49,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:03:49,527 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:03:49,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:03:49,783 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-28 04:03:49,783 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:03:49,795 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:03:49,795 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:03:49,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:49 BoogieIcfgContainer [2024-11-28 04:03:49,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:03:49,798 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:03:49,798 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:03:49,804 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:03:49,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:03:48" (1/3) ... [2024-11-28 04:03:49,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4033416b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:49, skipping insertion in model container [2024-11-28 04:03:49,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:03:49" (2/3) ... [2024-11-28 04:03:49,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4033416b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:03:49, skipping insertion in model container [2024-11-28 04:03:49,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:49" (3/3) ... [2024-11-28 04:03:49,807 INFO L128 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2024-11-28 04:03:49,823 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:03:49,825 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bftpd_2.i that has 2 procedures, 62 locations, 1 initial locations, 1 loop locations, and 20 error locations. [2024-11-28 04:03:49,866 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:03:49,880 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;@2d200c33, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:03:49,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-28 04:03:49,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:03:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:03:49,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:49,893 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:03:49,894 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:49,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash -713284542, now seen corresponding path program 1 times [2024-11-28 04:03:49,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:49,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212380386] [2024-11-28 04:03:49,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:49,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,332 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 04:03:50,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:50,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212380386] [2024-11-28 04:03:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212380386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:50,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:03:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808439184] [2024-11-28 04:03:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:50,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:03:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:50,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:03:50,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:50,378 INFO L87 Difference]: Start difference. First operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 04:03:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:50,595 INFO L93 Difference]: Finished difference Result 127 states and 148 transitions. [2024-11-28 04:03:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-11-28 04:03:50,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:50,611 INFO L225 Difference]: With dead ends: 127 [2024-11-28 04:03:50,612 INFO L226 Difference]: Without dead ends: 121 [2024-11-28 04:03:50,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:03:50,620 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 107 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:50,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 124 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-28 04:03:50,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 95. [2024-11-28 04:03:50,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 68 states have (on average 1.588235294117647) internal successors, (108), 85 states have internal predecessors, (108), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-28 04:03:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2024-11-28 04:03:50,671 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 6 [2024-11-28 04:03:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:50,671 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2024-11-28 04:03:50,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 04:03:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2024-11-28 04:03:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:03:50,672 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:50,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:03:50,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:03:50,672 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:50,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:50,673 INFO L85 PathProgramCache]: Analyzing trace with hash -713284541, now seen corresponding path program 1 times [2024-11-28 04:03:50,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:50,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189870822] [2024-11-28 04:03:50,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:50,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:50,944 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 04:03:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:50,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189870822] [2024-11-28 04:03:50,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189870822] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:50,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:50,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:50,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054128861] [2024-11-28 04:03:50,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:50,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:50,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:50,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:50,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:50,949 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 04:03:51,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:51,152 INFO L93 Difference]: Finished difference Result 196 states and 270 transitions. [2024-11-28 04:03:51,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:03:51,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-11-28 04:03:51,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:51,155 INFO L225 Difference]: With dead ends: 196 [2024-11-28 04:03:51,156 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:03:51,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:51,157 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 143 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:51,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 138 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:51,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:03:51,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 173. [2024-11-28 04:03:51,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 155 states have internal predecessors, (221), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:51,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 266 transitions. [2024-11-28 04:03:51,179 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 266 transitions. Word has length 6 [2024-11-28 04:03:51,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:51,181 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 266 transitions. [2024-11-28 04:03:51,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 04:03:51,182 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 266 transitions. [2024-11-28 04:03:51,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 04:03:51,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:51,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:51,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:03:51,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:51,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -636984340, now seen corresponding path program 1 times [2024-11-28 04:03:51,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11121473] [2024-11-28 04:03:51,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:51,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:51,502 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 04:03:51,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:51,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11121473] [2024-11-28 04:03:51,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11121473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:51,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:51,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:51,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970901180] [2024-11-28 04:03:51,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:51,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:51,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:51,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:51,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:51,504 INFO L87 Difference]: Start difference. First operand 173 states and 266 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:03:51,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:51,700 INFO L93 Difference]: Finished difference Result 213 states and 305 transitions. [2024-11-28 04:03:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:51,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:03:51,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:51,704 INFO L225 Difference]: With dead ends: 213 [2024-11-28 04:03:51,704 INFO L226 Difference]: Without dead ends: 213 [2024-11-28 04:03:51,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:51,708 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 68 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:51,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 168 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:51,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-28 04:03:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 176. [2024-11-28 04:03:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.5886524822695036) internal successors, (224), 158 states have internal predecessors, (224), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 269 transitions. [2024-11-28 04:03:51,741 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 269 transitions. Word has length 7 [2024-11-28 04:03:51,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:51,742 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 269 transitions. [2024-11-28 04:03:51,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:03:51,742 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 269 transitions. [2024-11-28 04:03:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:03:51,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:51,743 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:51,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:03:51,743 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:51,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1728321986, now seen corresponding path program 1 times [2024-11-28 04:03:51,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:51,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949492477] [2024-11-28 04:03:51,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:51,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:52,115 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 04:03:52,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:52,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949492477] [2024-11-28 04:03:52,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949492477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:52,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:52,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:52,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488527114] [2024-11-28 04:03:52,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:52,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:52,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:52,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:52,117 INFO L87 Difference]: Start difference. First operand 176 states and 269 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 04:03:52,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:52,299 INFO L93 Difference]: Finished difference Result 198 states and 271 transitions. [2024-11-28 04:03:52,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2024-11-28 04:03:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:52,302 INFO L225 Difference]: With dead ends: 198 [2024-11-28 04:03:52,302 INFO L226 Difference]: Without dead ends: 198 [2024-11-28 04:03:52,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:52,303 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 64 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:52,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 201 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:52,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-28 04:03:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 176. [2024-11-28 04:03:52,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.574468085106383) internal successors, (222), 158 states have internal predecessors, (222), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:52,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 267 transitions. [2024-11-28 04:03:52,334 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 267 transitions. Word has length 8 [2024-11-28 04:03:52,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:52,334 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 267 transitions. [2024-11-28 04:03:52,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 04:03:52,335 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 267 transitions. [2024-11-28 04:03:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:03:52,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:52,335 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:52,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:03:52,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:52,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:52,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2038374062, now seen corresponding path program 1 times [2024-11-28 04:03:52,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:52,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414185088] [2024-11-28 04:03:52,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:52,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:52,451 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 04:03:52,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:52,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414185088] [2024-11-28 04:03:52,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414185088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:52,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:52,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753565328] [2024-11-28 04:03:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:52,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:52,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:52,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:52,453 INFO L87 Difference]: Start difference. First operand 176 states and 267 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:03:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:52,599 INFO L93 Difference]: Finished difference Result 256 states and 350 transitions. [2024-11-28 04:03:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2024-11-28 04:03:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:52,602 INFO L225 Difference]: With dead ends: 256 [2024-11-28 04:03:52,602 INFO L226 Difference]: Without dead ends: 256 [2024-11-28 04:03:52,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:52,603 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 136 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:52,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 194 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:52,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-28 04:03:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 213. [2024-11-28 04:03:52,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 176 states have (on average 1.5511363636363635) internal successors, (273), 194 states have internal predecessors, (273), 11 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 318 transitions. [2024-11-28 04:03:52,630 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 318 transitions. Word has length 9 [2024-11-28 04:03:52,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:52,630 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 318 transitions. [2024-11-28 04:03:52,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:03:52,631 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 318 transitions. [2024-11-28 04:03:52,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:03:52,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:52,631 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:52,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:03:52,632 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:52,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:52,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1234913468, now seen corresponding path program 1 times [2024-11-28 04:03:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621060510] [2024-11-28 04:03:52,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:52,757 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 04:03:52,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:52,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621060510] [2024-11-28 04:03:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621060510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:52,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981486439] [2024-11-28 04:03:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:52,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:52,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:52,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:52,763 INFO L87 Difference]: Start difference. First operand 213 states and 318 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 04:03:52,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:52,904 INFO L93 Difference]: Finished difference Result 251 states and 333 transitions. [2024-11-28 04:03:52,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:52,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-28 04:03:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:52,907 INFO L225 Difference]: With dead ends: 251 [2024-11-28 04:03:52,907 INFO L226 Difference]: Without dead ends: 251 [2024-11-28 04:03:52,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:52,907 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 163 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:52,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 195 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-28 04:03:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 223. [2024-11-28 04:03:52,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 185 states have (on average 1.545945945945946) internal successors, (286), 204 states have internal predecessors, (286), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 331 transitions. [2024-11-28 04:03:52,928 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 331 transitions. Word has length 10 [2024-11-28 04:03:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:52,929 INFO L471 AbstractCegarLoop]: Abstraction has 223 states and 331 transitions. [2024-11-28 04:03:52,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 04:03:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 331 transitions. [2024-11-28 04:03:52,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:03:52,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:52,930 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:52,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:03:52,930 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:52,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:52,931 INFO L85 PathProgramCache]: Analyzing trace with hash -81492115, now seen corresponding path program 1 times [2024-11-28 04:03:52,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:52,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572655079] [2024-11-28 04:03:52,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:53,180 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 04:03:53,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:53,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572655079] [2024-11-28 04:03:53,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572655079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:53,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033546087] [2024-11-28 04:03:53,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:53,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:53,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:53,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:53,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:03:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:53,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:53,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:53,563 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 04:03:53,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:53,729 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 04:03:53,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033546087] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:53,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:53,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 11 [2024-11-28 04:03:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626164750] [2024-11-28 04:03:53,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:53,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:03:53,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:53,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:03:53,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:03:53,732 INFO L87 Difference]: Start difference. First operand 223 states and 331 transitions. Second operand has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:54,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:54,062 INFO L93 Difference]: Finished difference Result 246 states and 330 transitions. [2024-11-28 04:03:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 04:03:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:54,064 INFO L225 Difference]: With dead ends: 246 [2024-11-28 04:03:54,064 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 04:03:54,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:03:54,066 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 238 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:54,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 487 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 04:03:54,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 226. [2024-11-28 04:03:54,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 188 states have (on average 1.4893617021276595) internal successors, (280), 207 states have internal predecessors, (280), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:54,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 325 transitions. [2024-11-28 04:03:54,081 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 325 transitions. Word has length 14 [2024-11-28 04:03:54,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:54,082 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 325 transitions. [2024-11-28 04:03:54,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.25) internal successors, (39), 11 states have internal predecessors, (39), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:54,082 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 325 transitions. [2024-11-28 04:03:54,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:03:54,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:54,083 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:54,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:54,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:54,284 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:54,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:54,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1768711682, now seen corresponding path program 1 times [2024-11-28 04:03:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048510847] [2024-11-28 04:03:54,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:54,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:54,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:54,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048510847] [2024-11-28 04:03:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048510847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631735798] [2024-11-28 04:03:54,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:54,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:54,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:54,521 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:54,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:03:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:54,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:03:54,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:54,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:54,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:54,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631735798] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:54,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:54,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2024-11-28 04:03:54,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985807962] [2024-11-28 04:03:54,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:54,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:54,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:54,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:54,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:03:54,940 INFO L87 Difference]: Start difference. First operand 226 states and 325 transitions. Second operand has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:55,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:55,321 INFO L93 Difference]: Finished difference Result 264 states and 360 transitions. [2024-11-28 04:03:55,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:03:55,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 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 04:03:55,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:55,324 INFO L225 Difference]: With dead ends: 264 [2024-11-28 04:03:55,324 INFO L226 Difference]: Without dead ends: 264 [2024-11-28 04:03:55,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:03:55,327 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 142 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:55,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 339 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:55,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-28 04:03:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 234. [2024-11-28 04:03:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 196 states have (on average 1.4846938775510203) internal successors, (291), 215 states have internal predecessors, (291), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (34), 11 states have call predecessors, (34), 11 states have call successors, (34) [2024-11-28 04:03:55,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 336 transitions. [2024-11-28 04:03:55,341 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 336 transitions. Word has length 15 [2024-11-28 04:03:55,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:55,342 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 336 transitions. [2024-11-28 04:03:55,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 336 transitions. [2024-11-28 04:03:55,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:03:55,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:55,343 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:55,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:55,548 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:55,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:55,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1004512660, now seen corresponding path program 1 times [2024-11-28 04:03:55,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:55,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524754690] [2024-11-28 04:03:55,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:55,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:55,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:55,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524754690] [2024-11-28 04:03:55,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524754690] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:55,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955004000] [2024-11-28 04:03:55,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:55,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:55,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:55,809 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:55,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:03:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:55,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:03:55,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:56,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:56,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955004000] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:56,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:03:56,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2024-11-28 04:03:56,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471596144] [2024-11-28 04:03:56,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:56,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:03:56,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:56,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:03:56,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:03:56,361 INFO L87 Difference]: Start difference. First operand 234 states and 336 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:56,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:56,972 INFO L93 Difference]: Finished difference Result 394 states and 540 transitions. [2024-11-28 04:03:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:03:56,974 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:03:56,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:56,976 INFO L225 Difference]: With dead ends: 394 [2024-11-28 04:03:56,976 INFO L226 Difference]: Without dead ends: 394 [2024-11-28 04:03:56,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:03:56,977 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 259 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:56,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 491 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-28 04:03:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 332. [2024-11-28 04:03:56,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 288 states have (on average 1.5243055555555556) internal successors, (439), 307 states have internal predecessors, (439), 14 states have call successors, (14), 10 states have call predecessors, (14), 12 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2024-11-28 04:03:57,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 503 transitions. [2024-11-28 04:03:57,001 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 503 transitions. Word has length 16 [2024-11-28 04:03:57,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:57,001 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 503 transitions. [2024-11-28 04:03:57,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 14 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:03:57,001 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 503 transitions. [2024-11-28 04:03:57,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 04:03:57,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:57,003 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 04:03:57,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:57,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:57,207 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:57,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:57,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1915949067, now seen corresponding path program 1 times [2024-11-28 04:03:57,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:57,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526666981] [2024-11-28 04:03:57,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:57,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:57,292 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 04:03:57,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:57,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526666981] [2024-11-28 04:03:57,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526666981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:57,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:57,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:03:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188677628] [2024-11-28 04:03:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:57,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:03:57,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:57,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:03:57,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:03:57,294 INFO L87 Difference]: Start difference. First operand 332 states and 503 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 04:03:57,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:57,326 INFO L93 Difference]: Finished difference Result 344 states and 490 transitions. [2024-11-28 04:03:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:03:57,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 18 [2024-11-28 04:03:57,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:57,328 INFO L225 Difference]: With dead ends: 344 [2024-11-28 04:03:57,328 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 04:03:57,328 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 04:03:57,329 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 27 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:57,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 114 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:03:57,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 04:03:57,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 335. [2024-11-28 04:03:57,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 294 states have (on average 1.510204081632653) internal successors, (444), 315 states have internal predecessors, (444), 11 states have call successors, (11), 8 states have call predecessors, (11), 12 states have return successors, (33), 11 states have call predecessors, (33), 11 states have call successors, (33) [2024-11-28 04:03:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 488 transitions. [2024-11-28 04:03:57,353 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 488 transitions. Word has length 18 [2024-11-28 04:03:57,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:57,353 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 488 transitions. [2024-11-28 04:03:57,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 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 04:03:57,353 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 488 transitions. [2024-11-28 04:03:57,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:03:57,354 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:57,354 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] [2024-11-28 04:03:57,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:03:57,356 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:57,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash 774696235, now seen corresponding path program 1 times [2024-11-28 04:03:57,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:57,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547031351] [2024-11-28 04:03:57,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:57,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:57,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:57,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547031351] [2024-11-28 04:03:57,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547031351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:57,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:57,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:03:57,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142959582] [2024-11-28 04:03:57,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:57,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:03:57,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:57,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:03:57,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:03:57,410 INFO L87 Difference]: Start difference. First operand 335 states and 488 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:03:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:57,425 INFO L93 Difference]: Finished difference Result 259 states and 364 transitions. [2024-11-28 04:03:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:03:57,426 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 04:03:57,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:57,427 INFO L225 Difference]: With dead ends: 259 [2024-11-28 04:03:57,427 INFO L226 Difference]: Without dead ends: 259 [2024-11-28 04:03:57,427 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 04:03:57,428 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 9 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:57,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 116 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:03:57,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-28 04:03:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2024-11-28 04:03:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 224 states have (on average 1.4910714285714286) internal successors, (334), 244 states have internal predecessors, (334), 8 states have call successors, (8), 6 states have call predecessors, (8), 9 states have return successors, (22), 8 states have call predecessors, (22), 8 states have call successors, (22) [2024-11-28 04:03:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 364 transitions. [2024-11-28 04:03:57,449 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 364 transitions. Word has length 25 [2024-11-28 04:03:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:57,451 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 364 transitions. [2024-11-28 04:03:57,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:03:57,451 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 364 transitions. [2024-11-28 04:03:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:03:57,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:57,452 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] [2024-11-28 04:03:57,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:03:57,454 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:57,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:57,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1328994673, now seen corresponding path program 1 times [2024-11-28 04:03:57,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540738981] [2024-11-28 04:03:57,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:57,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:57,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:57,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540738981] [2024-11-28 04:03:57,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540738981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:57,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046702100] [2024-11-28 04:03:57,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:57,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:57,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:57,737 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:57,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:03:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:57,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:03:57,823 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:58,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:03:58,196 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 04:03:58,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:58,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046702100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:58,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:03:58,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 12 [2024-11-28 04:03:58,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963845724] [2024-11-28 04:03:58,490 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:03:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:58,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:03:58,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:03:58,493 INFO L87 Difference]: Start difference. First operand 259 states and 364 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:59,048 INFO L93 Difference]: Finished difference Result 290 states and 387 transitions. [2024-11-28 04:03:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:03:59,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-28 04:03:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:59,051 INFO L225 Difference]: With dead ends: 290 [2024-11-28 04:03:59,051 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:03:59,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=521, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:03:59,052 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 292 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:59,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 187 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:59,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:03:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 280. [2024-11-28 04:03:59,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 241 states have (on average 1.4439834024896265) internal successors, (348), 265 states have internal predecessors, (348), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-28 04:03:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 382 transitions. [2024-11-28 04:03:59,065 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 382 transitions. Word has length 27 [2024-11-28 04:03:59,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:59,067 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 382 transitions. [2024-11-28 04:03:59,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:03:59,067 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 382 transitions. [2024-11-28 04:03:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:03:59,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:59,068 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:59,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:03:59,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:03:59,273 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:59,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:59,273 INFO L85 PathProgramCache]: Analyzing trace with hash -2144774448, now seen corresponding path program 1 times [2024-11-28 04:03:59,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:59,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073152025] [2024-11-28 04:03:59,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:59,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073152025] [2024-11-28 04:03:59,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073152025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:59,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763332353] [2024-11-28 04:03:59,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:59,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:59,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:59,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:59,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:03:59,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:59,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:03:59,480 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:59,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:03:59,636 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:59,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763332353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:59,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:59,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 9 [2024-11-28 04:03:59,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271386837] [2024-11-28 04:03:59,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:59,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:59,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:59,637 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:59,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:59,638 INFO L87 Difference]: Start difference. First operand 280 states and 382 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:03:59,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:59,724 INFO L93 Difference]: Finished difference Result 299 states and 397 transitions. [2024-11-28 04:03:59,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:59,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-28 04:03:59,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:59,726 INFO L225 Difference]: With dead ends: 299 [2024-11-28 04:03:59,726 INFO L226 Difference]: Without dead ends: 299 [2024-11-28 04:03:59,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:03:59,727 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 76 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:59,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 189 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:03:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-28 04:03:59,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 288. [2024-11-28 04:03:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 249 states have (on average 1.429718875502008) internal successors, (356), 273 states have internal predecessors, (356), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-28 04:03:59,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 390 transitions. [2024-11-28 04:03:59,746 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 390 transitions. Word has length 28 [2024-11-28 04:03:59,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:59,746 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 390 transitions. [2024-11-28 04:03:59,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:03:59,747 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 390 transitions. [2024-11-28 04:03:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:03:59,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:59,748 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:59,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:03:59,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:03:59,952 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:03:59,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1558595314, now seen corresponding path program 1 times [2024-11-28 04:03:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771369300] [2024-11-28 04:03:59,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:00,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:00,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771369300] [2024-11-28 04:04:00,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771369300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:00,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894563934] [2024-11-28 04:04:00,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:00,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:00,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:00,539 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:00,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:04:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:00,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:04:00,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:01,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:04:01,068 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 04:04:01,210 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 04:04:01,210 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894563934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:01,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 17 [2024-11-28 04:04:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860311942] [2024-11-28 04:04:01,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:01,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:04:01,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:01,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:04:01,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:01,400 INFO L87 Difference]: Start difference. First operand 288 states and 390 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:01,874 INFO L93 Difference]: Finished difference Result 295 states and 389 transitions. [2024-11-28 04:04:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:04:01,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-28 04:04:01,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:01,876 INFO L225 Difference]: With dead ends: 295 [2024-11-28 04:04:01,876 INFO L226 Difference]: Without dead ends: 295 [2024-11-28 04:04:01,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:04:01,878 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 255 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:01,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 168 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-28 04:04:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2024-11-28 04:04:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 249 states have (on average 1.4136546184738956) internal successors, (352), 273 states have internal predecessors, (352), 8 states have call successors, (8), 6 states have call predecessors, (8), 13 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2024-11-28 04:04:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 386 transitions. [2024-11-28 04:04:01,890 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 386 transitions. Word has length 29 [2024-11-28 04:04:01,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:01,891 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 386 transitions. [2024-11-28 04:04:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 386 transitions. [2024-11-28 04:04:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 04:04:01,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:01,892 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:01,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:04:02,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 04:04:02,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:02,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1071814430, now seen corresponding path program 1 times [2024-11-28 04:04:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971090210] [2024-11-28 04:04:02,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:02,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971090210] [2024-11-28 04:04:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971090210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:02,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800818117] [2024-11-28 04:04:02,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:02,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:02,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:02,337 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:02,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:04:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:02,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:04:02,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:02,553 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:02,553 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 16 [2024-11-28 04:04:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:02,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800818117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:02,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:02,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2024-11-28 04:04:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132723476] [2024-11-28 04:04:02,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:02,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:04:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:02,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:04:02,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:04:02,679 INFO L87 Difference]: Start difference. First operand 288 states and 386 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:04:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:03,109 INFO L93 Difference]: Finished difference Result 415 states and 517 transitions. [2024-11-28 04:04:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:04:03,110 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2024-11-28 04:04:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:03,111 INFO L225 Difference]: With dead ends: 415 [2024-11-28 04:04:03,112 INFO L226 Difference]: Without dead ends: 415 [2024-11-28 04:04:03,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:04:03,113 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 433 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:03,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 360 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:03,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-28 04:04:03,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 370. [2024-11-28 04:04:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 328 states have (on average 1.3689024390243902) internal successors, (449), 353 states have internal predecessors, (449), 8 states have call successors, (8), 8 states have call predecessors, (8), 16 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2024-11-28 04:04:03,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 482 transitions. [2024-11-28 04:04:03,125 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 482 transitions. Word has length 30 [2024-11-28 04:04:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:03,125 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 482 transitions. [2024-11-28 04:04:03,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:04:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 482 transitions. [2024-11-28 04:04:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:04:03,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:03,127 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:03,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:03,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 04:04:03,331 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:03,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1133491088, now seen corresponding path program 1 times [2024-11-28 04:04:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216931587] [2024-11-28 04:04:03,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:03,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:03,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216931587] [2024-11-28 04:04:03,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216931587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:03,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242057187] [2024-11-28 04:04:03,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:03,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:03,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:03,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:03,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:04:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:03,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:04:03,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:03,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:04:03,841 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 04:04:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:03,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:04,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242057187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:04,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:04,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-11-28 04:04:04,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017506781] [2024-11-28 04:04:04,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:04,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:04:04,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:04,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:04:04,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:04:04,083 INFO L87 Difference]: Start difference. First operand 370 states and 482 transitions. Second operand has 15 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:04,853 INFO L93 Difference]: Finished difference Result 436 states and 532 transitions. [2024-11-28 04:04:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:04:04,854 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 04:04:04,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:04,857 INFO L225 Difference]: With dead ends: 436 [2024-11-28 04:04:04,857 INFO L226 Difference]: Without dead ends: 436 [2024-11-28 04:04:04,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:04:04,859 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 558 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:04,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 392 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:04,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2024-11-28 04:04:04,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 386. [2024-11-28 04:04:04,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 343 states have (on average 1.3760932944606414) internal successors, (472), 369 states have internal predecessors, (472), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:04,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 501 transitions. [2024-11-28 04:04:04,874 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 501 transitions. Word has length 31 [2024-11-28 04:04:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:04,875 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 501 transitions. [2024-11-28 04:04:04,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.666666666666667) internal successors, (56), 10 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 501 transitions. [2024-11-28 04:04:04,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:04:04,877 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:04,878 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:04,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:04:05,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:04:05,082 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:05,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:05,082 INFO L85 PathProgramCache]: Analyzing trace with hash -962560583, now seen corresponding path program 1 times [2024-11-28 04:04:05,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:05,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046681671] [2024-11-28 04:04:05,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:05,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046681671] [2024-11-28 04:04:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046681671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:05,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328887553] [2024-11-28 04:04:05,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:05,379 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:05,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:04:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:05,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:04:05,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:05,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:04:05,753 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 04:04:05,912 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:05,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328887553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:06,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 15 [2024-11-28 04:04:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876412277] [2024-11-28 04:04:06,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:06,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:04:06,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:06,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:04:06,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:06,143 INFO L87 Difference]: Start difference. First operand 386 states and 501 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:06,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:06,803 INFO L93 Difference]: Finished difference Result 403 states and 501 transitions. [2024-11-28 04:04:06,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:04:06,803 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-28 04:04:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:06,805 INFO L225 Difference]: With dead ends: 403 [2024-11-28 04:04:06,805 INFO L226 Difference]: Without dead ends: 403 [2024-11-28 04:04:06,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:04:06,806 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 371 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:06,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 291 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:06,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-28 04:04:06,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 385. [2024-11-28 04:04:06,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 345 states have (on average 1.318840579710145) internal successors, (455), 368 states have internal predecessors, (455), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:06,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 484 transitions. [2024-11-28 04:04:06,819 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 484 transitions. Word has length 35 [2024-11-28 04:04:06,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:06,820 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 484 transitions. [2024-11-28 04:04:06,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 14 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:06,820 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 484 transitions. [2024-11-28 04:04:06,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:04:06,820 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:06,820 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:06,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:04:07,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:04:07,021 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:07,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1198975028, now seen corresponding path program 1 times [2024-11-28 04:04:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91230049] [2024-11-28 04:04:07,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:07,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91230049] [2024-11-28 04:04:07,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91230049] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:07,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371923635] [2024-11-28 04:04:07,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:07,091 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:07,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:04:07,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:07,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:04:07,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,225 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:07,269 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371923635] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:07,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:07,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:04:07,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112250195] [2024-11-28 04:04:07,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:07,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:07,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:07,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:07,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:07,271 INFO L87 Difference]: Start difference. First operand 385 states and 484 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:07,302 INFO L93 Difference]: Finished difference Result 383 states and 478 transitions. [2024-11-28 04:04:07,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:07,302 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-28 04:04:07,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:07,304 INFO L225 Difference]: With dead ends: 383 [2024-11-28 04:04:07,304 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 04:04:07,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:07,304 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 44 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:07,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 98 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:07,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 04:04:07,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-28 04:04:07,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 345 states have (on average 1.3014492753623188) internal successors, (449), 366 states have internal predecessors, (449), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 478 transitions. [2024-11-28 04:04:07,317 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 478 transitions. Word has length 40 [2024-11-28 04:04:07,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:07,317 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 478 transitions. [2024-11-28 04:04:07,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:07,317 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 478 transitions. [2024-11-28 04:04:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:04:07,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:07,318 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:07,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:04:07,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:04:07,519 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:07,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1486479697, now seen corresponding path program 1 times [2024-11-28 04:04:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:07,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123265184] [2024-11-28 04:04:07,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:07,609 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123265184] [2024-11-28 04:04:07,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123265184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:07,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069594236] [2024-11-28 04:04:07,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:07,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:07,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:07,612 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:07,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:04:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:07,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:04:07,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:07,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:07,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069594236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:07,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:07,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:04:07,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294750512] [2024-11-28 04:04:07,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:07,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:07,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:07,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:07,838 INFO L87 Difference]: Start difference. First operand 383 states and 478 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:07,893 INFO L93 Difference]: Finished difference Result 381 states and 472 transitions. [2024-11-28 04:04:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:07,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-11-28 04:04:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:07,895 INFO L225 Difference]: With dead ends: 381 [2024-11-28 04:04:07,895 INFO L226 Difference]: Without dead ends: 381 [2024-11-28 04:04:07,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:07,896 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:07,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 77 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-28 04:04:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2024-11-28 04:04:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 345 states have (on average 1.2840579710144928) internal successors, (443), 364 states have internal predecessors, (443), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 472 transitions. [2024-11-28 04:04:07,910 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 472 transitions. Word has length 41 [2024-11-28 04:04:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:07,910 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 472 transitions. [2024-11-28 04:04:07,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 472 transitions. [2024-11-28 04:04:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:04:07,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:07,912 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:07,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:08,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:08,113 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:08,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:08,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1163769750, now seen corresponding path program 1 times [2024-11-28 04:04:08,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:08,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254518294] [2024-11-28 04:04:08,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:08,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:08,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254518294] [2024-11-28 04:04:08,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254518294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:08,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448333685] [2024-11-28 04:04:08,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:08,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:08,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:08,260 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:08,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:04:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:08,357 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:04:08,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:08,364 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 04:04:08,414 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 04:04:08,415 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 14 [2024-11-28 04:04:08,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:08,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:08,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448333685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:08,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:08,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-11-28 04:04:08,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760371640] [2024-11-28 04:04:08,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:08,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:08,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:08,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:08,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:08,506 INFO L87 Difference]: Start difference. First operand 381 states and 472 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:08,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:08,593 INFO L93 Difference]: Finished difference Result 409 states and 499 transitions. [2024-11-28 04:04:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:08,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-28 04:04:08,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:08,596 INFO L225 Difference]: With dead ends: 409 [2024-11-28 04:04:08,596 INFO L226 Difference]: Without dead ends: 409 [2024-11-28 04:04:08,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:08,597 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 32 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:08,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 136 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:04:08,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-28 04:04:08,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 381. [2024-11-28 04:04:08,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 345 states have (on average 1.2782608695652173) internal successors, (441), 364 states have internal predecessors, (441), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:08,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 470 transitions. [2024-11-28 04:04:08,618 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 470 transitions. Word has length 42 [2024-11-28 04:04:08,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:08,618 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 470 transitions. [2024-11-28 04:04:08,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:08,619 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 470 transitions. [2024-11-28 04:04:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 04:04:08,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:08,619 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:08,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:04:08,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:08,823 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:08,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:08,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1143744414, now seen corresponding path program 1 times [2024-11-28 04:04:08,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:08,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048771891] [2024-11-28 04:04:08,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:08,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:08,903 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:04:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048771891] [2024-11-28 04:04:08,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048771891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:08,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613465532] [2024-11-28 04:04:08,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:08,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:08,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:08,906 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:08,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:04:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:08,993 INFO L256 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:04:08,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:04:09,032 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:09,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613465532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:09,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:04:09,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-28 04:04:09,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922520993] [2024-11-28 04:04:09,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:09,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:09,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:09,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:09,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:09,034 INFO L87 Difference]: Start difference. First operand 381 states and 470 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:09,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:09,063 INFO L93 Difference]: Finished difference Result 374 states and 449 transitions. [2024-11-28 04:04:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:09,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-28 04:04:09,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:09,065 INFO L225 Difference]: With dead ends: 374 [2024-11-28 04:04:09,065 INFO L226 Difference]: Without dead ends: 374 [2024-11-28 04:04:09,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:09,066 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 15 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:09,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 159 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-28 04:04:09,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2024-11-28 04:04:09,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 336 states have (on average 1.25) internal successors, (420), 355 states have internal predecessors, (420), 8 states have call successors, (8), 8 states have call predecessors, (8), 17 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:04:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 449 transitions. [2024-11-28 04:04:09,077 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 449 transitions. Word has length 45 [2024-11-28 04:04:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:09,077 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 449 transitions. [2024-11-28 04:04:09,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 449 transitions. [2024-11-28 04:04:09,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:04:09,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:09,078 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:09,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:04:09,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 04:04:09,279 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:09,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:09,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1258219649, now seen corresponding path program 1 times [2024-11-28 04:04:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:09,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741016795] [2024-11-28 04:04:09,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:09,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 04:04:09,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:09,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741016795] [2024-11-28 04:04:09,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741016795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:09,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:09,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:09,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418262321] [2024-11-28 04:04:09,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:09,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:09,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:09,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:09,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:09,330 INFO L87 Difference]: Start difference. First operand 372 states and 449 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:09,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:09,336 INFO L93 Difference]: Finished difference Result 306 states and 356 transitions. [2024-11-28 04:04:09,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:09,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-28 04:04:09,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:09,341 INFO L225 Difference]: With dead ends: 306 [2024-11-28 04:04:09,341 INFO L226 Difference]: Without dead ends: 306 [2024-11-28 04:04:09,341 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 04:04:09,342 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:09,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:09,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-28 04:04:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 303. [2024-11-28 04:04:09,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 277 states have (on average 1.2021660649819494) internal successors, (333), 288 states have internal predecessors, (333), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:04:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 353 transitions. [2024-11-28 04:04:09,354 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 353 transitions. Word has length 47 [2024-11-28 04:04:09,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:09,354 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 353 transitions. [2024-11-28 04:04:09,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:09,355 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 353 transitions. [2024-11-28 04:04:09,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:04:09,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:09,355 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:09,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:04:09,356 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:09,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -524851487, now seen corresponding path program 1 times [2024-11-28 04:04:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397777811] [2024-11-28 04:04:09,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:09,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397777811] [2024-11-28 04:04:09,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397777811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:09,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325809814] [2024-11-28 04:04:09,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:09,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:09,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:09,655 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:09,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:04:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:09,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:04:09,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:09,903 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:04:09,904 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 04:04:10,060 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:10,060 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 16 [2024-11-28 04:04:10,111 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 04:04:10,111 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 14 treesize of output 13 [2024-11-28 04:04:10,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:10,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:10,233 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:04:10,233 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 53 [2024-11-28 04:04:10,485 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 04:04:10,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 53 [2024-11-28 04:04:10,705 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:10,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325809814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:10,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:10,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 25 [2024-11-28 04:04:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066123112] [2024-11-28 04:04:10,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:10,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:04:10,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:10,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:04:10,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:04:10,707 INFO L87 Difference]: Start difference. First operand 303 states and 353 transitions. Second operand has 26 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:04:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:10,959 INFO L93 Difference]: Finished difference Result 308 states and 358 transitions. [2024-11-28 04:04:10,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:04:10,960 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 51 [2024-11-28 04:04:10,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:10,961 INFO L225 Difference]: With dead ends: 308 [2024-11-28 04:04:10,961 INFO L226 Difference]: Without dead ends: 308 [2024-11-28 04:04:10,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:04:10,962 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 294 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:10,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 161 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-28 04:04:10,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 302. [2024-11-28 04:04:10,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 277 states have (on average 1.1985559566787003) internal successors, (332), 287 states have internal predecessors, (332), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 04:04:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 352 transitions. [2024-11-28 04:04:10,970 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 352 transitions. Word has length 51 [2024-11-28 04:04:10,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:10,971 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 352 transitions. [2024-11-28 04:04:10,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.625) internal successors, (135), 25 states have internal predecessors, (135), 6 states have call successors, (8), 8 states have call predecessors, (8), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:04:10,971 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 352 transitions. [2024-11-28 04:04:10,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:04:10,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:10,971 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:10,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:04:11,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:11,172 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:11,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1662380178, now seen corresponding path program 1 times [2024-11-28 04:04:11,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:11,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079339189] [2024-11-28 04:04:11,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:11,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:11,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079339189] [2024-11-28 04:04:11,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079339189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:11,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855074244] [2024-11-28 04:04:11,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:11,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:11,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:11,247 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:11,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:04:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:11,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:04:11,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:11,434 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_parse_input_c1_~x~0#1.base_77| Int)) (and (<= |v_parse_input_c1_~x~0#1.base_77| c_~global~0.base) (= |c_#valid| (store |c_old(#valid)| |v_parse_input_c1_~x~0#1.base_77| (select |c_#valid| |v_parse_input_c1_~x~0#1.base_77|))))) is different from true [2024-11-28 04:04:11,479 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 04:04:11,479 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 14 treesize of output 13 [2024-11-28 04:04:11,676 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:11,676 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 16 [2024-11-28 04:04:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-28 04:04:11,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:11,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855074244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:11,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:11,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 16 [2024-11-28 04:04:11,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763705315] [2024-11-28 04:04:11,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:11,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:04:11,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:11,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:04:11,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=260, Unknown=1, NotChecked=32, Total=342 [2024-11-28 04:04:11,866 INFO L87 Difference]: Start difference. First operand 302 states and 352 transitions. Second operand has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:04:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:12,778 INFO L93 Difference]: Finished difference Result 279 states and 310 transitions. [2024-11-28 04:04:12,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:04:12,778 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 51 [2024-11-28 04:04:12,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:12,780 INFO L225 Difference]: With dead ends: 279 [2024-11-28 04:04:12,780 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 04:04:12,781 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=1053, Unknown=1, NotChecked=70, Total=1406 [2024-11-28 04:04:12,781 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 343 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:12,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 441 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 404 Invalid, 0 Unknown, 172 Unchecked, 0.4s Time] [2024-11-28 04:04:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 04:04:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 262. [2024-11-28 04:04:12,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 241 states have (on average 1.170124481327801) internal successors, (282), 249 states have internal predecessors, (282), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 297 transitions. [2024-11-28 04:04:12,790 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 297 transitions. Word has length 51 [2024-11-28 04:04:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:12,791 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 297 transitions. [2024-11-28 04:04:12,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.133333333333334) internal successors, (92), 14 states have internal predecessors, (92), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:04:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 297 transitions. [2024-11-28 04:04:12,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:04:12,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:12,791 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:12,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:04:12,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:12,992 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:12,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:12,993 INFO L85 PathProgramCache]: Analyzing trace with hash 909473069, now seen corresponding path program 1 times [2024-11-28 04:04:12,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:12,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343665970] [2024-11-28 04:04:12,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:12,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343665970] [2024-11-28 04:04:13,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343665970] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:13,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498341188] [2024-11-28 04:04:13,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:13,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:13,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:13,813 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:13,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:04:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:13,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 04:04:13,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:14,184 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 04:04:14,184 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 04:04:14,462 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:14,462 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 16 [2024-11-28 04:04:14,521 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 04:04:14,521 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 14 treesize of output 13 [2024-11-28 04:04:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:14,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:14,829 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-11-28 04:04:14,830 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 88 treesize of output 81 [2024-11-28 04:04:15,167 INFO L349 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2024-11-28 04:04:15,168 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 3 case distinctions, treesize of input 84 treesize of output 101 [2024-11-28 04:04:15,584 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:15,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498341188] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:15,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:04:15,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 14] total 42 [2024-11-28 04:04:15,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586950045] [2024-11-28 04:04:15,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:15,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 04:04:15,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:15,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 04:04:15,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1611, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:04:15,587 INFO L87 Difference]: Start difference. First operand 262 states and 297 transitions. Second operand has 43 states, 39 states have (on average 3.58974358974359) internal successors, (140), 35 states have internal predecessors, (140), 8 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:04:16,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:16,419 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2024-11-28 04:04:16,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:04:16,420 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 39 states have (on average 3.58974358974359) internal successors, (140), 35 states have internal predecessors, (140), 8 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 52 [2024-11-28 04:04:16,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:16,421 INFO L225 Difference]: With dead ends: 272 [2024-11-28 04:04:16,421 INFO L226 Difference]: Without dead ends: 272 [2024-11-28 04:04:16,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 04:04:16,423 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 448 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:16,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 306 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:04:16,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-28 04:04:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2024-11-28 04:04:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 241 states have (on average 1.16597510373444) internal successors, (281), 249 states have internal predecessors, (281), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 296 transitions. [2024-11-28 04:04:16,435 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 296 transitions. Word has length 52 [2024-11-28 04:04:16,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:16,435 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 296 transitions. [2024-11-28 04:04:16,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 39 states have (on average 3.58974358974359) internal successors, (140), 35 states have internal predecessors, (140), 8 states have call successors, (9), 9 states have call predecessors, (9), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:04:16,438 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 296 transitions. [2024-11-28 04:04:16,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:04:16,439 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:16,439 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:16,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:16,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:16,644 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:16,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:16,644 INFO L85 PathProgramCache]: Analyzing trace with hash 626039558, now seen corresponding path program 1 times [2024-11-28 04:04:16,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:16,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189206354] [2024-11-28 04:04:16,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:16,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:16,929 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:04:16,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189206354] [2024-11-28 04:04:16,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189206354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:16,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621913549] [2024-11-28 04:04:16,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:16,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:16,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:16,932 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:16,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:04:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:17,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:04:17,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:17,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:04:17,237 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 04:04:17,317 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:04:17,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621913549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:17,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:17,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 13 [2024-11-28 04:04:17,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248497247] [2024-11-28 04:04:17,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:17,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:04:17,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:17,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:04:17,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:04:17,460 INFO L87 Difference]: Start difference. First operand 262 states and 296 transitions. Second operand has 15 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:04:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:18,008 INFO L93 Difference]: Finished difference Result 273 states and 301 transitions. [2024-11-28 04:04:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:04:18,009 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2024-11-28 04:04:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:18,010 INFO L225 Difference]: With dead ends: 273 [2024-11-28 04:04:18,010 INFO L226 Difference]: Without dead ends: 273 [2024-11-28 04:04:18,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=740, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:04:18,011 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 245 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:18,011 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 237 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-11-28 04:04:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 261. [2024-11-28 04:04:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 241 states have (on average 1.1410788381742738) internal successors, (275), 248 states have internal predecessors, (275), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:18,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 290 transitions. [2024-11-28 04:04:18,018 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 290 transitions. Word has length 53 [2024-11-28 04:04:18,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:18,019 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 290 transitions. [2024-11-28 04:04:18,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.5) internal successors, (66), 10 states have internal predecessors, (66), 4 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:04:18,019 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 290 transitions. [2024-11-28 04:04:18,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:04:18,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:18,020 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:18,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:04:18,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:18,220 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:18,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:18,221 INFO L85 PathProgramCache]: Analyzing trace with hash 2125259695, now seen corresponding path program 1 times [2024-11-28 04:04:18,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:18,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123175503] [2024-11-28 04:04:18,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:18,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:18,666 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:18,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123175503] [2024-11-28 04:04:18,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123175503] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:18,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298675396] [2024-11-28 04:04:18,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:18,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:18,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:18,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:18,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:04:18,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:18,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:04:18,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:18,880 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:18,880 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 16 [2024-11-28 04:04:19,174 INFO L349 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2024-11-28 04:04:19,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 75 [2024-11-28 04:04:19,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2024-11-28 04:04:19,298 INFO L349 Elim1Store]: treesize reduction 49, result has 2.0 percent of original size [2024-11-28 04:04:19,298 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 5 case distinctions, treesize of input 31 treesize of output 1 [2024-11-28 04:04:19,366 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:19,366 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:19,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298675396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:19,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:19,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-28 04:04:19,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821894935] [2024-11-28 04:04:19,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:19,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:04:19,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:19,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:04:19,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:04:19,444 INFO L87 Difference]: Start difference. First operand 261 states and 290 transitions. Second operand has 20 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:04:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:20,095 INFO L93 Difference]: Finished difference Result 269 states and 298 transitions. [2024-11-28 04:04:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:04:20,096 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-28 04:04:20,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:20,097 INFO L225 Difference]: With dead ends: 269 [2024-11-28 04:04:20,097 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:04:20,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:04:20,098 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 335 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 48 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:20,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 212 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 293 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:20,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:04:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 260. [2024-11-28 04:04:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 241 states have (on average 1.1369294605809128) internal successors, (274), 247 states have internal predecessors, (274), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 289 transitions. [2024-11-28 04:04:20,105 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 289 transitions. Word has length 54 [2024-11-28 04:04:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:20,105 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 289 transitions. [2024-11-28 04:04:20,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 2 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:04:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 289 transitions. [2024-11-28 04:04:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:04:20,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:20,106 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:20,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:04:20,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:20,307 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:20,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2035852867, now seen corresponding path program 1 times [2024-11-28 04:04:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029570617] [2024-11-28 04:04:20,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:20,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029570617] [2024-11-28 04:04:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029570617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649562042] [2024-11-28 04:04:20,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:20,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:20,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:20,957 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:20,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:04:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:21,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 04:04:21,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:21,358 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:21,358 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 16 [2024-11-28 04:04:21,871 INFO L349 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2024-11-28 04:04:21,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 75 [2024-11-28 04:04:22,013 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2024-11-28 04:04:22,013 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 5 case distinctions, treesize of input 31 treesize of output 29 [2024-11-28 04:04:22,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 14 [2024-11-28 04:04:22,223 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:22,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:22,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649562042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:22,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:22,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 25 [2024-11-28 04:04:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807578697] [2024-11-28 04:04:22,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:22,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:04:22,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:22,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:04:22,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:04:22,393 INFO L87 Difference]: Start difference. First operand 260 states and 289 transitions. Second operand has 27 states, 24 states have (on average 4.583333333333333) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:04:23,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:23,079 INFO L93 Difference]: Finished difference Result 268 states and 297 transitions. [2024-11-28 04:04:23,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:04:23,080 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.583333333333333) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 60 [2024-11-28 04:04:23,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:23,081 INFO L225 Difference]: With dead ends: 268 [2024-11-28 04:04:23,081 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 04:04:23,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=260, Invalid=1300, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 04:04:23,082 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 210 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:23,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 236 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 453 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:23,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 04:04:23,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 259. [2024-11-28 04:04:23,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 241 states have (on average 1.1327800829875518) internal successors, (273), 246 states have internal predecessors, (273), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:23,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 288 transitions. [2024-11-28 04:04:23,089 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 288 transitions. Word has length 60 [2024-11-28 04:04:23,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:23,089 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 288 transitions. [2024-11-28 04:04:23,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.583333333333333) internal successors, (110), 23 states have internal predecessors, (110), 5 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:04:23,089 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 288 transitions. [2024-11-28 04:04:23,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:04:23,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:23,090 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:23,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:04:23,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:04:23,291 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:23,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:23,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1313070517, now seen corresponding path program 1 times [2024-11-28 04:04:23,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:23,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155409106] [2024-11-28 04:04:23,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:24,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155409106] [2024-11-28 04:04:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155409106] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574490074] [2024-11-28 04:04:24,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:24,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:24,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:24,033 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:24,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:04:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:24,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:04:24,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:24,611 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:24,611 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 16 [2024-11-28 04:04:24,615 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 04:04:24,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:04:24,971 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 04:04:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:04:25,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:25,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574490074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:25,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:25,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 23 [2024-11-28 04:04:25,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409572458] [2024-11-28 04:04:25,563 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:25,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:04:25,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:25,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:04:25,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:04:25,564 INFO L87 Difference]: Start difference. First operand 259 states and 288 transitions. Second operand has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:04:26,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:26,957 INFO L93 Difference]: Finished difference Result 284 states and 311 transitions. [2024-11-28 04:04:26,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 04:04:26,957 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 61 [2024-11-28 04:04:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:26,958 INFO L225 Difference]: With dead ends: 284 [2024-11-28 04:04:26,958 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 04:04:26,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=400, Invalid=1952, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:04:26,960 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 281 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:26,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 236 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:04:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 04:04:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 258. [2024-11-28 04:04:26,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 241 states have (on average 1.1286307053941909) internal successors, (272), 245 states have internal predecessors, (272), 6 states have call successors, (6), 6 states have call predecessors, (6), 9 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-28 04:04:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 287 transitions. [2024-11-28 04:04:26,966 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 287 transitions. Word has length 61 [2024-11-28 04:04:26,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:26,966 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 287 transitions. [2024-11-28 04:04:26,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 21 states have internal predecessors, (100), 5 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 04:04:26,966 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 287 transitions. [2024-11-28 04:04:26,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:04:26,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:26,967 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:26,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:27,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 04:04:27,172 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:27,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash 359818979, now seen corresponding path program 1 times [2024-11-28 04:04:27,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:27,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554620349] [2024-11-28 04:04:27,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:27,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:27,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:04:27,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554620349] [2024-11-28 04:04:27,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554620349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:27,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144491040] [2024-11-28 04:04:27,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:27,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:27,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:27,464 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:27,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:04:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:27,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:04:27,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:27,594 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 04:04:27,760 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 04:04:27,761 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 3 case distinctions, treesize of input 22 treesize of output 16 [2024-11-28 04:04:27,792 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 04:04:27,792 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 14 [2024-11-28 04:04:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:27,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:27,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144491040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:04:27,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-28 04:04:27,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106451429] [2024-11-28 04:04:27,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:27,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:04:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:04:27,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:04:27,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:04:27,902 INFO L87 Difference]: Start difference. First operand 258 states and 287 transitions. Second operand has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:28,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:28,117 INFO L93 Difference]: Finished difference Result 269 states and 297 transitions. [2024-11-28 04:04:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:04:28,118 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 66 [2024-11-28 04:04:28,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:28,119 INFO L225 Difference]: With dead ends: 269 [2024-11-28 04:04:28,119 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:04:28,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:04:28,119 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 32 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:28,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 194 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:28,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:04:28,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 212. [2024-11-28 04:04:28,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 199 states have (on average 1.1256281407035176) internal successors, (224), 201 states have internal predecessors, (224), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 04:04:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 236 transitions. [2024-11-28 04:04:28,125 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 236 transitions. Word has length 66 [2024-11-28 04:04:28,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:28,126 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 236 transitions. [2024-11-28 04:04:28,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.1) internal successors, (71), 11 states have internal predecessors, (71), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:04:28,126 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 236 transitions. [2024-11-28 04:04:28,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:04:28,127 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:28,127 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:28,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:04:28,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:28,331 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:28,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:28,331 INFO L85 PathProgramCache]: Analyzing trace with hash -618326333, now seen corresponding path program 1 times [2024-11-28 04:04:28,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:04:28,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414886155] [2024-11-28 04:04:28,331 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:28,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:04:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:04:28,353 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:04:28,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:04:28,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:04:28,399 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:04:28,400 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2024-11-28 04:04:28,401 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 20 remaining) [2024-11-28 04:04:28,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 20 remaining) [2024-11-28 04:04:28,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (16 of 20 remaining) [2024-11-28 04:04:28,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE (15 of 20 remaining) [2024-11-28 04:04:28,402 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE (14 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE (13 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 20 remaining) [2024-11-28 04:04:28,403 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE (8 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE (7 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr12ASSERT_VIOLATIONMEMORY_FREE (6 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr13ASSERT_VIOLATIONMEMORY_FREE (5 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr14ASSERT_VIOLATIONMEMORY_FREE (4 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr15ASSERT_VIOLATIONMEMORY_FREE (3 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2024-11-28 04:04:28,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2024-11-28 04:04:28,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 04:04:28,409 INFO L422 BasicCegarLoop]: Path program 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 04:04:28,504 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:04:28,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:04:28 BoogieIcfgContainer [2024-11-28 04:04:28,509 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:04:28,510 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:04:28,510 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:04:28,510 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:04:28,511 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:03:49" (3/4) ... [2024-11-28 04:04:28,513 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 04:04:28,514 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:04:28,515 INFO L158 Benchmark]: Toolchain (without parser) took 39874.52ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 93.0MB in the beginning and 369.4MB in the end (delta: -276.4MB). Peak memory consumption was 33.1MB. Max. memory is 16.1GB. [2024-11-28 04:04:28,515 INFO L158 Benchmark]: CDTParser took 1.64ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:28,515 INFO L158 Benchmark]: CACSL2BoogieTranslator took 526.93ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 72.8MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:04:28,515 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.20ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:04:28,515 INFO L158 Benchmark]: Boogie Preprocessor took 66.12ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:28,516 INFO L158 Benchmark]: RCFGBuilder took 494.90ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 52.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:04:28,516 INFO L158 Benchmark]: TraceAbstraction took 38711.02ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 52.0MB in the beginning and 369.5MB in the end (delta: -317.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:28,516 INFO L158 Benchmark]: Witness Printer took 4.22ms. Allocated memory is still 427.8MB. Free memory was 369.5MB in the beginning and 369.4MB in the end (delta: 87.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:04:28,517 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.64ms. Allocated memory is still 167.8MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 526.93ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 72.8MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.20ms. Allocated memory is still 117.4MB. Free memory was 72.8MB in the beginning and 70.9MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.12ms. Allocated memory is still 117.4MB. Free memory was 70.9MB in the beginning and 69.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 494.90ms. Allocated memory is still 117.4MB. Free memory was 69.1MB in the beginning and 52.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 38711.02ms. Allocated memory was 117.4MB in the beginning and 427.8MB in the end (delta: 310.4MB). Free memory was 52.0MB in the beginning and 369.5MB in the end (delta: -317.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.22ms. Allocated memory is still 427.8MB. Free memory was 369.5MB in the beginning and 369.4MB in the end (delta: 87.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 721]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of strcmp at line 693, overapproximation of memtrack at line 721. Possible FailurePath: [L685] int state = STATE_1; [L686] char *global = 0; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; [L687-L690] const struct command commands[] = { {"c1",c1,STATE_1}, {"c2",c2,STATE_2} }; VAL [commands={6:0}, global={0:0}, state=0] [L722] CALL parse_input("c1") VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={3:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={3:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={3:0}, state=0] [L692] COND FALSE !(i < 2) VAL [\old(input)={3:0}, \old(state)=0, commands={6:0}, global={0:0}, input={3:0}, state=0] [L722] RET parse_input("c1") VAL [commands={6:0}, global={0:0}, state=0] [L723] CALL parse_input("c1") VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={4:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=1, input={4:0}, state=0] [L693] COND FALSE !(strcmp(commands[i].name,input) == 0) [L692] i++ VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, i=2, input={4:0}, state=0] [L692] COND FALSE !(i < 2) VAL [\old(input)={4:0}, \old(state)=0, commands={6:0}, global={0:0}, input={4:0}, state=0] [L723] RET parse_input("c1") VAL [commands={6:0}, global={0:0}, state=0] [L724] CALL parse_input("c2") VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0] [L692] int i = 0; VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L692] COND TRUE i < 2 VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] EXPR commands[i].name VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] EXPR strcmp(commands[i].name,input) VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L693] COND TRUE strcmp(commands[i].name,input) == 0 [L694] EXPR commands[i].state_needed VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, i=0, input={5:0}, state=0] [L694] COND TRUE state >= commands[i].state_needed [L695] EXPR commands[i].function VAL [\old(input)={5:0}, \old(state)=0, commands={6:0}, global={0:0}, input={5:0}, state=0] [L695] CALL commands[i].function() [L702] char *x = (char *)malloc(sizeof(char)); [L703] COND FALSE !(!x) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L706] COND FALSE !(\read(*global)) VAL [\old(state)=0, commands={6:0}, global={0:0}, state=0, x={-3:0}] [L709] global = x [L710] state = STATE_2 VAL [\old(state)=0, commands={6:0}, global={-3:0}, state=1] [L695] RET commands[i].function() [L724] RET parse_input("c2") VAL [commands={6:0}, global={-3:0}, state=1] [L725] return 0; VAL [\result=0, commands={6:0}, global={-3:0}, state=1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 717]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 38.6s, OverallIterations: 31, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 5660 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5660 mSDsluCounter, 6737 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 172 IncrementalHoareTripleChecker+Unchecked, 5220 mSDsCounter, 634 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5841 IncrementalHoareTripleChecker+Invalid, 6650 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 634 mSolverCounterUnsat, 1517 mSDtfsCounter, 5841 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1587 GetRequests, 1074 SyntacticMatches, 8 SemanticMatches, 505 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3036 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=16, InterpolantAutomatonStates: 277, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 30 MinimizatonAttempts, 620 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 1887 NumberOfCodeBlocks, 1887 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 2030 ConstructedInterpolants, 119 QuantifiedInterpolants, 22433 SizeOfPredicates, 80 NumberOfNonLiveVariables, 5375 ConjunctsInSsa, 414 ConjunctsInUnsatCore, 59 InterpolantComputations, 11 PerfectInterpolantSequences, 430/1020 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 04:04:28,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:04:31,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:04:31,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 04:04:31,295 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:04:31,296 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:04:31,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:04:31,340 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:04:31,341 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:04:31,341 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:04:31,342 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:04:31,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:04:31,343 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:04:31,343 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:04:31,343 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:04:31,344 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:04:31,344 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:04:31,344 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:04:31,345 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:04:31,346 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:04:31,347 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:31,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:31,348 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:04:31,348 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:04:31,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:04:31,349 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_35872719-27f9-44a0-bbe5-95c85c3ab2b7/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 -> 7c883b81b24ce5a721aa9a1ff13aef8a0d532ba87d9e130e470a0b88a1f8e93e [2024-11-28 04:04:31,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:04:31,691 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:04:31,693 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:04:31,695 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:04:31,695 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:04:31,696 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2024-11-28 04:04:34,589 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/dc55941b9/26adaad7220946098550bf03d4ef796f/FLAGd0ae9631d [2024-11-28 04:04:34,946 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:04:34,947 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/sv-benchmarks/c/memsafety-bftpd/bftpd_2.i [2024-11-28 04:04:34,966 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/dc55941b9/26adaad7220946098550bf03d4ef796f/FLAGd0ae9631d [2024-11-28 04:04:34,986 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/data/dc55941b9/26adaad7220946098550bf03d4ef796f [2024-11-28 04:04:34,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:04:34,994 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:04:34,997 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:34,997 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:04:35,002 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:04:35,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:34" (1/1) ... [2024-11-28 04:04:35,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d4e70c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35, skipping insertion in model container [2024-11-28 04:04:35,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:04:34" (1/1) ... [2024-11-28 04:04:35,040 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:04:35,350 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:04:35,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:35,370 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:04:35,420 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:04:35,467 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:04:35,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35 WrapperNode [2024-11-28 04:04:35,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:04:35,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:35,470 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:04:35,470 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:04:35,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,496 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,528 INFO L138 Inliner]: procedures = 169, calls = 42, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 95 [2024-11-28 04:04:35,528 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:04:35,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:04:35,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:04:35,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:04:35,544 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,552 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,581 INFO L175 MemorySlicer]: Split 24 memory accesses to 3 slices as follows [9, 6, 9]. 38 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [9, 6, 6]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 04:04:35,585 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,605 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,609 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:04:35,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:04:35,610 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:04:35,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:04:35,611 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (1/1) ... [2024-11-28 04:04:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:04:35,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:35,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:04:35,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:04:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:04:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:04:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 04:04:35,684 INFO L130 BoogieDeclarations]: Found specification of procedure parse_input [2024-11-28 04:04:35,685 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_input [2024-11-28 04:04:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:04:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:04:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:04:35,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:04:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:04:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:04:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:04:35,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:04:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:04:35,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:04:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:04:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:04:35,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:04:35,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:04:35,886 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:04:35,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:04:36,252 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-28 04:04:36,252 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:04:36,262 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:04:36,263 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:04:36,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:36 BoogieIcfgContainer [2024-11-28 04:04:36,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:04:36,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:04:36,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:04:36,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:04:36,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:04:34" (1/3) ... [2024-11-28 04:04:36,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3021cc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:36, skipping insertion in model container [2024-11-28 04:04:36,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:04:35" (2/3) ... [2024-11-28 04:04:36,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3021cc36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:04:36, skipping insertion in model container [2024-11-28 04:04:36,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:04:36" (3/3) ... [2024-11-28 04:04:36,290 INFO L128 eAbstractionObserver]: Analyzing ICFG bftpd_2.i [2024-11-28 04:04:36,307 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:04:36,309 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bftpd_2.i that has 2 procedures, 62 locations, 1 initial locations, 1 loop locations, and 20 error locations. [2024-11-28 04:04:36,356 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:04:36,373 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;@241ab8ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:04:36,373 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2024-11-28 04:04:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:04:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:04:36,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:36,389 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:04:36,390 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:36,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash -713284542, now seen corresponding path program 1 times [2024-11-28 04:04:36,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:36,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358216188] [2024-11-28 04:04:36,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:36,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:36,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:04:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:36,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:04:36,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:36,749 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 04:04:36,749 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:36,750 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:36,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358216188] [2024-11-28 04:04:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358216188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:04:36,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098806019] [2024-11-28 04:04:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:36,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:36,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:36,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:36,791 INFO L87 Difference]: Start difference. First operand has 62 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 57 states have internal predecessors, (65), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 04:04:36,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:36,998 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2024-11-28 04:04:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:37,001 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 6 [2024-11-28 04:04:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:37,008 INFO L225 Difference]: With dead ends: 112 [2024-11-28 04:04:37,008 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 04:04:37,010 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 04:04:37,014 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 53 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:37,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:37,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 04:04:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2024-11-28 04:04:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.6779661016949152) internal successors, (99), 78 states have internal predecessors, (99), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 04:04:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2024-11-28 04:04:37,062 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 6 [2024-11-28 04:04:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:37,062 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2024-11-28 04:04:37,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 04:04:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2024-11-28 04:04:37,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:04:37,063 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:37,063 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:04:37,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:37,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:37,268 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:37,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash -713284541, now seen corresponding path program 1 times [2024-11-28 04:04:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954168068] [2024-11-28 04:04:37,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:37,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:37,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:37,272 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:37,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:04:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:37,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:04:37,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:37,526 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 04:04:37,527 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:37,527 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954168068] [2024-11-28 04:04:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954168068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:37,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:37,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:04:37,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959504187] [2024-11-28 04:04:37,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:37,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:37,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:37,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:37,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:37,531 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 04:04:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:37,805 INFO L93 Difference]: Finished difference Result 184 states and 246 transitions. [2024-11-28 04:04:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:04:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2024-11-28 04:04:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:37,808 INFO L225 Difference]: With dead ends: 184 [2024-11-28 04:04:37,808 INFO L226 Difference]: Without dead ends: 184 [2024-11-28 04:04:37,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:37,809 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 87 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:37,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 140 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:37,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2024-11-28 04:04:37,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 156. [2024-11-28 04:04:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 123 states have (on average 1.7154471544715446) internal successors, (211), 142 states have internal predecessors, (211), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 242 transitions. [2024-11-28 04:04:37,844 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 242 transitions. Word has length 6 [2024-11-28 04:04:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:37,844 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 242 transitions. [2024-11-28 04:04:37,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 04:04:37,844 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 242 transitions. [2024-11-28 04:04:37,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 04:04:37,844 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:37,845 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:37,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:04:38,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:38,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:38,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash -636984340, now seen corresponding path program 1 times [2024-11-28 04:04:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:38,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191090989] [2024-11-28 04:04:38,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:38,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:38,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:38,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:38,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:04:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:38,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:04:38,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:38,300 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 04:04:38,300 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:38,301 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:38,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191090989] [2024-11-28 04:04:38,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191090989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:38,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:38,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:38,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768493161] [2024-11-28 04:04:38,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:38,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:38,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:38,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:38,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:38,303 INFO L87 Difference]: Start difference. First operand 156 states and 242 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:04:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:38,600 INFO L93 Difference]: Finished difference Result 196 states and 281 transitions. [2024-11-28 04:04:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:04:38,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:38,603 INFO L225 Difference]: With dead ends: 196 [2024-11-28 04:04:38,603 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 04:04:38,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:38,604 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 81 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:38,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 162 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:04:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 04:04:38,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 159. [2024-11-28 04:04:38,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.6984126984126984) internal successors, (214), 145 states have internal predecessors, (214), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:38,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 245 transitions. [2024-11-28 04:04:38,619 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 245 transitions. Word has length 7 [2024-11-28 04:04:38,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:38,619 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 245 transitions. [2024-11-28 04:04:38,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 04:04:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 245 transitions. [2024-11-28 04:04:38,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:04:38,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:38,620 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:38,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:38,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:38,821 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:38,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1728321986, now seen corresponding path program 1 times [2024-11-28 04:04:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:38,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972574082] [2024-11-28 04:04:38,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:38,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:38,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:38,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:38,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:04:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:38,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:04:38,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:39,165 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 04:04:39,165 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:39,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:39,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972574082] [2024-11-28 04:04:39,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972574082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:39,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:39,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:39,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31330797] [2024-11-28 04:04:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:39,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:39,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:39,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:39,168 INFO L87 Difference]: Start difference. First operand 159 states and 245 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 04:04:39,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:39,461 INFO L93 Difference]: Finished difference Result 186 states and 247 transitions. [2024-11-28 04:04:39,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:39,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2024-11-28 04:04:39,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:39,463 INFO L225 Difference]: With dead ends: 186 [2024-11-28 04:04:39,464 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 04:04:39,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:39,465 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 69 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:39,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 205 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:39,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 04:04:39,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2024-11-28 04:04:39,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 126 states have (on average 1.6825396825396826) internal successors, (212), 145 states have internal predecessors, (212), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:39,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 243 transitions. [2024-11-28 04:04:39,495 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 243 transitions. Word has length 8 [2024-11-28 04:04:39,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:39,496 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 243 transitions. [2024-11-28 04:04:39,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 04:04:39,496 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 243 transitions. [2024-11-28 04:04:39,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:04:39,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:39,496 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:39,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:04:39,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:39,697 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:39,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:39,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2038374062, now seen corresponding path program 1 times [2024-11-28 04:04:39,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:39,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147411279] [2024-11-28 04:04:39,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:39,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:39,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:39,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:39,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:04:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:39,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:04:39,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:39,881 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 04:04:39,882 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:39,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:39,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147411279] [2024-11-28 04:04:39,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147411279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:39,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638837029] [2024-11-28 04:04:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:39,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:39,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:39,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:39,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:39,887 INFO L87 Difference]: Start difference. First operand 159 states and 243 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:04:40,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:40,098 INFO L93 Difference]: Finished difference Result 239 states and 326 transitions. [2024-11-28 04:04:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:40,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2024-11-28 04:04:40,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:40,100 INFO L225 Difference]: With dead ends: 239 [2024-11-28 04:04:40,100 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 04:04:40,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:40,101 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 136 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:40,102 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 196 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:40,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 04:04:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 196. [2024-11-28 04:04:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 161 states have (on average 1.6335403726708075) internal successors, (263), 181 states have internal predecessors, (263), 9 states have call successors, (9), 5 states have call predecessors, (9), 6 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions. [2024-11-28 04:04:40,131 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 9 [2024-11-28 04:04:40,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:40,131 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 294 transitions. [2024-11-28 04:04:40,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 04:04:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions. [2024-11-28 04:04:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:04:40,132 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:40,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:40,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:04:40,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:40,337 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:40,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1234913468, now seen corresponding path program 1 times [2024-11-28 04:04:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:40,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243214311] [2024-11-28 04:04:40,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:40,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:40,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:40,339 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:40,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:04:40,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:40,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:04:40,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:40,554 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 04:04:40,554 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:40,554 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:40,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243214311] [2024-11-28 04:04:40,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243214311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:40,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:40,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:40,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305555064] [2024-11-28 04:04:40,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:40,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:04:40,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:40,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:04:40,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:04:40,556 INFO L87 Difference]: Start difference. First operand 196 states and 294 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 04:04:40,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:40,792 INFO L93 Difference]: Finished difference Result 236 states and 309 transitions. [2024-11-28 04:04:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:40,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2024-11-28 04:04:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:40,794 INFO L225 Difference]: With dead ends: 236 [2024-11-28 04:04:40,794 INFO L226 Difference]: Without dead ends: 236 [2024-11-28 04:04:40,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:04:40,796 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 125 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:40,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 227 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:04:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-28 04:04:40,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 206. [2024-11-28 04:04:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 170 states have (on average 1.6235294117647059) internal successors, (276), 191 states have internal predecessors, (276), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 307 transitions. [2024-11-28 04:04:40,827 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 307 transitions. Word has length 10 [2024-11-28 04:04:40,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:40,827 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 307 transitions. [2024-11-28 04:04:40,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 04:04:40,828 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 307 transitions. [2024-11-28 04:04:40,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:04:40,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:40,828 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:40,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:04:41,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:41,029 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:41,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:41,030 INFO L85 PathProgramCache]: Analyzing trace with hash -81492115, now seen corresponding path program 1 times [2024-11-28 04:04:41,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:41,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1115748151] [2024-11-28 04:04:41,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:41,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:41,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:41,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:04:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:41,106 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:04:41,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:41,375 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 04:04:41,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:41,700 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 04:04:41,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:41,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115748151] [2024-11-28 04:04:41,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115748151] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:41,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:41,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2024-11-28 04:04:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625314541] [2024-11-28 04:04:41,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:41,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:04:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:41,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:04:41,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:04:41,703 INFO L87 Difference]: Start difference. First operand 206 states and 307 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:42,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:42,209 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2024-11-28 04:04:42,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:04:42,210 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 04:04:42,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:42,212 INFO L225 Difference]: With dead ends: 274 [2024-11-28 04:04:42,212 INFO L226 Difference]: Without dead ends: 274 [2024-11-28 04:04:42,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:04:42,213 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 165 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:42,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 281 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:04:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-28 04:04:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 236. [2024-11-28 04:04:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 200 states have (on average 1.62) internal successors, (324), 221 states have internal predecessors, (324), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:42,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2024-11-28 04:04:42,225 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 14 [2024-11-28 04:04:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:42,225 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2024-11-28 04:04:42,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2024-11-28 04:04:42,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:04:42,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:42,226 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:42,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:04:42,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:42,427 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:42,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:42,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1768711682, now seen corresponding path program 1 times [2024-11-28 04:04:42,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:42,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055411142] [2024-11-28 04:04:42,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:42,430 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:42,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:04:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:42,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:04:42,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:42,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:42,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:43,434 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:43,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055411142] [2024-11-28 04:04:43,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055411142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:43,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:43,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-28 04:04:43,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262851923] [2024-11-28 04:04:43,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:43,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:04:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:43,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:04:43,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:04:43,436 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:45,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:45,381 INFO L93 Difference]: Finished difference Result 358 states and 490 transitions. [2024-11-28 04:04:45,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:04:45,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 04:04:45,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:45,384 INFO L225 Difference]: With dead ends: 358 [2024-11-28 04:04:45,384 INFO L226 Difference]: Without dead ends: 358 [2024-11-28 04:04:45,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:04:45,385 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 328 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:45,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 239 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:04:45,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2024-11-28 04:04:45,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 274. [2024-11-28 04:04:45,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 238 states have (on average 1.6218487394957983) internal successors, (386), 259 states have internal predecessors, (386), 9 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 417 transitions. [2024-11-28 04:04:45,402 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 417 transitions. Word has length 15 [2024-11-28 04:04:45,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:45,402 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 417 transitions. [2024-11-28 04:04:45,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:45,403 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 417 transitions. [2024-11-28 04:04:45,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:04:45,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:45,404 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:45,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:04:45,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:45,604 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:45,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1004512660, now seen corresponding path program 1 times [2024-11-28 04:04:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:45,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152628656] [2024-11-28 04:04:45,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:45,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:45,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:45,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:04:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:45,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:04:45,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:46,141 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:46,653 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:46,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152628656] [2024-11-28 04:04:46,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152628656] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:46,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:46,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-28 04:04:46,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479573957] [2024-11-28 04:04:46,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:46,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:04:46,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:46,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:04:46,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:04:46,655 INFO L87 Difference]: Start difference. First operand 274 states and 417 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:48,466 INFO L93 Difference]: Finished difference Result 499 states and 688 transitions. [2024-11-28 04:04:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:04:48,467 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:04:48,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:48,470 INFO L225 Difference]: With dead ends: 499 [2024-11-28 04:04:48,470 INFO L226 Difference]: Without dead ends: 499 [2024-11-28 04:04:48,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:04:48,471 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 327 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:48,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 394 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:04:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-28 04:04:48,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 378. [2024-11-28 04:04:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 338 states have (on average 1.6538461538461537) internal successors, (559), 359 states have internal predecessors, (559), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-28 04:04:48,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 601 transitions. [2024-11-28 04:04:48,493 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 601 transitions. Word has length 16 [2024-11-28 04:04:48,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:48,494 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 601 transitions. [2024-11-28 04:04:48,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:04:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 601 transitions. [2024-11-28 04:04:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 04:04:48,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:48,496 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 04:04:48,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:48,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:48,701 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting parse_inputErr10ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:48,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:48,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1915949067, now seen corresponding path program 1 times [2024-11-28 04:04:48,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:48,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145921222] [2024-11-28 04:04:48,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:48,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:48,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:48,704 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:48,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:04:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:48,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:04:48,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:48,784 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 04:04:48,784 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:48,784 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145921222] [2024-11-28 04:04:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145921222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:48,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:04:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622495268] [2024-11-28 04:04:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:48,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:48,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:48,787 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:48,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:48,787 INFO L87 Difference]: Start difference. First operand 378 states and 601 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 04:04:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:48,801 INFO L93 Difference]: Finished difference Result 377 states and 597 transitions. [2024-11-28 04:04:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:48,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2024-11-28 04:04:48,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:48,807 INFO L225 Difference]: With dead ends: 377 [2024-11-28 04:04:48,807 INFO L226 Difference]: Without dead ends: 377 [2024-11-28 04:04:48,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 04:04:48,808 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:48,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:48,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2024-11-28 04:04:48,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2024-11-28 04:04:48,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 338 states have (on average 1.6420118343195267) internal successors, (555), 358 states have internal predecessors, (555), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (31), 11 states have call predecessors, (31), 11 states have call successors, (31) [2024-11-28 04:04:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 597 transitions. [2024-11-28 04:04:48,831 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 597 transitions. Word has length 18 [2024-11-28 04:04:48,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:48,832 INFO L471 AbstractCegarLoop]: Abstraction has 377 states and 597 transitions. [2024-11-28 04:04:48,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 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 04:04:48,832 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 597 transitions. [2024-11-28 04:04:48,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:04:48,833 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:48,833 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:48,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:04:49,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,034 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting parse_inputErr11ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:49,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:49,034 INFO L85 PathProgramCache]: Analyzing trace with hash -735120992, now seen corresponding path program 1 times [2024-11-28 04:04:49,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:49,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546686548] [2024-11-28 04:04:49,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:49,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:49,036 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:49,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:04:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:49,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:04:49,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:49,114 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 04:04:49,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:49,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546686548] [2024-11-28 04:04:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546686548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:49,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:49,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868221091] [2024-11-28 04:04:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:49,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:49,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:49,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:49,116 INFO L87 Difference]: Start difference. First operand 377 states and 597 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 04:04:49,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:49,126 INFO L93 Difference]: Finished difference Result 285 states and 431 transitions. [2024-11-28 04:04:49,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:49,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2024-11-28 04:04:49,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:49,131 INFO L225 Difference]: With dead ends: 285 [2024-11-28 04:04:49,131 INFO L226 Difference]: Without dead ends: 285 [2024-11-28 04:04:49,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 04:04:49,132 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:49,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-28 04:04:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-28 04:04:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 255 states have (on average 1.5686274509803921) internal successors, (400), 269 states have internal predecessors, (400), 9 states have call successors, (9), 6 states have call predecessors, (9), 7 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:04:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 431 transitions. [2024-11-28 04:04:49,144 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 431 transitions. Word has length 19 [2024-11-28 04:04:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:49,144 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 431 transitions. [2024-11-28 04:04:49,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 04:04:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 431 transitions. [2024-11-28 04:04:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:04:49,146 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:49,147 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:04:49,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 04:04:49,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,347 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:49,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:49,348 INFO L85 PathProgramCache]: Analyzing trace with hash -734474496, now seen corresponding path program 1 times [2024-11-28 04:04:49,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:49,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315806015] [2024-11-28 04:04:49,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:49,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:49,350 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:49,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:04:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:49,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:04:49,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:49,452 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 04:04:49,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:49,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:49,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315806015] [2024-11-28 04:04:49,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315806015] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:49,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:49,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-28 04:04:49,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324139700] [2024-11-28 04:04:49,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:49,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:49,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:49,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:49,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:49,454 INFO L87 Difference]: Start difference. First operand 285 states and 431 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 04:04:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:49,477 INFO L93 Difference]: Finished difference Result 374 states and 564 transitions. [2024-11-28 04:04:49,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:49,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 19 [2024-11-28 04:04:49,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:49,480 INFO L225 Difference]: With dead ends: 374 [2024-11-28 04:04:49,480 INFO L226 Difference]: Without dead ends: 374 [2024-11-28 04:04:49,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 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 04:04:49,481 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 32 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:49,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 99 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2024-11-28 04:04:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 364. [2024-11-28 04:04:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 328 states have (on average 1.5670731707317074) internal successors, (514), 343 states have internal predecessors, (514), 12 states have call successors, (12), 8 states have call predecessors, (12), 10 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-28 04:04:49,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 562 transitions. [2024-11-28 04:04:49,495 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 562 transitions. Word has length 19 [2024-11-28 04:04:49,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:49,496 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 562 transitions. [2024-11-28 04:04:49,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 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 04:04:49,496 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 562 transitions. [2024-11-28 04:04:49,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:04:49,496 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:49,497 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 04:04:49,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:04:49,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,697 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:49,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:49,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1293872797, now seen corresponding path program 1 times [2024-11-28 04:04:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448677376] [2024-11-28 04:04:49,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:49,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:49,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:49,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:49,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:04:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:49,774 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:04:49,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:49,825 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 04:04:49,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:49,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:49,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448677376] [2024-11-28 04:04:49,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448677376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:49,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:49,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:49,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076929251] [2024-11-28 04:04:49,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:49,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:04:49,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:49,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:04:49,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:04:49,828 INFO L87 Difference]: Start difference. First operand 364 states and 562 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 04:04:49,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:49,870 INFO L93 Difference]: Finished difference Result 335 states and 483 transitions. [2024-11-28 04:04:49,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:49,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 20 [2024-11-28 04:04:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:49,873 INFO L225 Difference]: With dead ends: 335 [2024-11-28 04:04:49,873 INFO L226 Difference]: Without dead ends: 333 [2024-11-28 04:04:49,873 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 04:04:49,874 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 28 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:49,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 152 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:49,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-28 04:04:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2024-11-28 04:04:49,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 289 states have (on average 1.5259515570934257) internal successors, (441), 304 states have internal predecessors, (441), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-28 04:04:49,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 477 transitions. [2024-11-28 04:04:49,889 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 477 transitions. Word has length 20 [2024-11-28 04:04:49,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:49,889 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 477 transitions. [2024-11-28 04:04:49,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 states have internal predecessors, (19), 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 04:04:49,889 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 477 transitions. [2024-11-28 04:04:49,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:04:49,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:49,891 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 04:04:49,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:04:50,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,092 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:50,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:50,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1024188265, now seen corresponding path program 2 times [2024-11-28 04:04:50,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:50,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132810893] [2024-11-28 04:04:50,093 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:04:50,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:50,097 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:50,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:04:50,173 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:04:50,174 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:04:50,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:04:50,177 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:50,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:50,303 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:50,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132810893] [2024-11-28 04:04:50,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132810893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:50,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:50,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 04:04:50,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943672572] [2024-11-28 04:04:50,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:50,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:04:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:50,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:04:50,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:04:50,304 INFO L87 Difference]: Start difference. First operand 322 states and 477 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 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 04:04:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:50,444 INFO L93 Difference]: Finished difference Result 289 states and 400 transitions. [2024-11-28 04:04:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:04:50,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 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 22 [2024-11-28 04:04:50,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:50,446 INFO L225 Difference]: With dead ends: 289 [2024-11-28 04:04:50,447 INFO L226 Difference]: Without dead ends: 289 [2024-11-28 04:04:50,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:04:50,447 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 44 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:50,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 296 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:04:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-11-28 04:04:50,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 275. [2024-11-28 04:04:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 242 states have (on average 1.4504132231404958) internal successors, (351), 257 states have internal predecessors, (351), 10 states have call successors, (10), 7 states have call predecessors, (10), 9 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2024-11-28 04:04:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 387 transitions. [2024-11-28 04:04:50,458 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 387 transitions. Word has length 22 [2024-11-28 04:04:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:50,458 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 387 transitions. [2024-11-28 04:04:50,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 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 04:04:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 387 transitions. [2024-11-28 04:04:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 04:04:50,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:50,459 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] [2024-11-28 04:04:50,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:50,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,660 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:50,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:50,660 INFO L85 PathProgramCache]: Analyzing trace with hash 774696235, now seen corresponding path program 1 times [2024-11-28 04:04:50,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:50,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322601952] [2024-11-28 04:04:50,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:50,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:50,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:50,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:04:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:50,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:04:50,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:50,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:04:50,757 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:50,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322601952] [2024-11-28 04:04:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322601952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:04:50,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:04:50,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:04:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116364201] [2024-11-28 04:04:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:04:50,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:04:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:50,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:04:50,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:04:50,761 INFO L87 Difference]: Start difference. First operand 275 states and 387 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:04:50,770 INFO L93 Difference]: Finished difference Result 202 states and 270 transitions. [2024-11-28 04:04:50,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:04:50,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 04:04:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:04:50,772 INFO L225 Difference]: With dead ends: 202 [2024-11-28 04:04:50,772 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 04:04:50,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 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 04:04:50,774 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 9 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:04:50,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 94 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:04:50,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 04:04:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2024-11-28 04:04:50,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 175 states have (on average 1.417142857142857) internal successors, (248), 189 states have internal predecessors, (248), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (15), 7 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-28 04:04:50,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 270 transitions. [2024-11-28 04:04:50,782 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 270 transitions. Word has length 25 [2024-11-28 04:04:50,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:04:50,783 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 270 transitions. [2024-11-28 04:04:50,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:04:50,784 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 270 transitions. [2024-11-28 04:04:50,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 04:04:50,787 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:04:50,787 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] [2024-11-28 04:04:50,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 04:04:50,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,988 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:04:50,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:04:50,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1328994673, now seen corresponding path program 1 times [2024-11-28 04:04:50,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:04:50,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075575177] [2024-11-28 04:04:50,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:04:50,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:04:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:04:50,992 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:04:50,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:04:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:04:51,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:04:51,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:04:51,334 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:04:51,335 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 13 treesize of output 13 [2024-11-28 04:04:51,541 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 04:04:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:04:51,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:04:51,845 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:04:51,845 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 15 treesize of output 14 [2024-11-28 04:04:56,679 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:04:56,679 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 15 treesize of output 14 [2024-11-28 04:04:56,852 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 04:04:56,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:04:56,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075575177] [2024-11-28 04:04:56,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075575177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:04:56,852 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:04:56,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2024-11-28 04:04:56,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743847867] [2024-11-28 04:04:56,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:04:56,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:04:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:04:56,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:04:56,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=74, Unknown=3, NotChecked=0, Total=110 [2024-11-28 04:04:56,854 INFO L87 Difference]: Start difference. First operand 202 states and 270 transitions. Second operand has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:04:59,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:05:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:01,421 INFO L93 Difference]: Finished difference Result 225 states and 277 transitions. [2024-11-28 04:05:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:05:01,422 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-11-28 04:05:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:01,423 INFO L225 Difference]: With dead ends: 225 [2024-11-28 04:05:01,423 INFO L226 Difference]: Without dead ends: 225 [2024-11-28 04:05:01,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=119, Invalid=217, Unknown=6, NotChecked=0, Total=342 [2024-11-28 04:05:01,424 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 223 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 44 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:01,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 93 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 103 Invalid, 9 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 04:05:01,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-28 04:05:01,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 213. [2024-11-28 04:05:01,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 186 states have (on average 1.3225806451612903) internal successors, (246), 200 states have internal predecessors, (246), 7 states have call successors, (7), 5 states have call predecessors, (7), 9 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-28 04:05:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 270 transitions. [2024-11-28 04:05:01,433 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 270 transitions. Word has length 27 [2024-11-28 04:05:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:01,434 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 270 transitions. [2024-11-28 04:05:01,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:01,434 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 270 transitions. [2024-11-28 04:05:01,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:05:01,435 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:01,435 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:01,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:01,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:01,636 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:01,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:01,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2144774448, now seen corresponding path program 1 times [2024-11-28 04:05:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200149273] [2024-11-28 04:05:01,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:01,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:01,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:01,641 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:01,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:05:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:01,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:05:01,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:02,042 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:02,511 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200149273] [2024-11-28 04:05:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200149273] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:02,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:02,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:05:02,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387422556] [2024-11-28 04:05:02,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:02,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:05:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:02,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:05:02,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:05:02,513 INFO L87 Difference]: Start difference. First operand 213 states and 270 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:05:03,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:03,351 INFO L93 Difference]: Finished difference Result 320 states and 374 transitions. [2024-11-28 04:05:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:05:03,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2024-11-28 04:05:03,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:03,354 INFO L225 Difference]: With dead ends: 320 [2024-11-28 04:05:03,354 INFO L226 Difference]: Without dead ends: 320 [2024-11-28 04:05:03,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:05:03,355 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 221 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:03,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 215 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:05:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-28 04:05:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 287. [2024-11-28 04:05:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.2879377431906616) internal successors, (331), 272 states have internal predecessors, (331), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:03,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 354 transitions. [2024-11-28 04:05:03,366 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 354 transitions. Word has length 28 [2024-11-28 04:05:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:03,366 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 354 transitions. [2024-11-28 04:05:03,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:05:03,367 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 354 transitions. [2024-11-28 04:05:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:05:03,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:03,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:03,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:03,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:03,568 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:03,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2063498398, now seen corresponding path program 1 times [2024-11-28 04:05:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:03,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306668461] [2024-11-28 04:05:03,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:03,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:03,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:03,571 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:03,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:05:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:03,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:05:03,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:04,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:04,484 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:04,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306668461] [2024-11-28 04:05:04,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306668461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:04,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:04,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-28 04:05:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569928403] [2024-11-28 04:05:04,485 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:04,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:05:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:04,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:05:04,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:05:04,487 INFO L87 Difference]: Start difference. First operand 287 states and 354 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:05,372 INFO L93 Difference]: Finished difference Result 303 states and 354 transitions. [2024-11-28 04:05:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:05:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-28 04:05:05,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:05,375 INFO L225 Difference]: With dead ends: 303 [2024-11-28 04:05:05,375 INFO L226 Difference]: Without dead ends: 303 [2024-11-28 04:05:05,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:05:05,376 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 297 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:05,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 214 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:05:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2024-11-28 04:05:05,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 287. [2024-11-28 04:05:05,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.2568093385214008) internal successors, (323), 272 states have internal predecessors, (323), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 346 transitions. [2024-11-28 04:05:05,385 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 346 transitions. Word has length 29 [2024-11-28 04:05:05,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:05,386 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 346 transitions. [2024-11-28 04:05:05,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:05,386 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 346 transitions. [2024-11-28 04:05:05,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 04:05:05,387 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:05,387 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:05,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:05,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:05,588 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:05,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1558595314, now seen corresponding path program 1 times [2024-11-28 04:05:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:05,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266158858] [2024-11-28 04:05:05,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:05,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:05,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:05,590 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:05,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:05:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:05,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:05:05,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:06,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:05:06,665 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 04:05:06,984 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 04:05:06,984 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:11,505 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266158858] [2024-11-28 04:05:11,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266158858] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:11,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [823755242] [2024-11-28 04:05:11,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:05:11,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:05:11,508 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:05:11,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-28 04:05:11,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:11,724 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 04:05:11,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:12,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:05:12,746 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 04:05:12,916 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 04:05:12,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:18,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [823755242] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:05:18,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:18,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 7 [2024-11-28 04:05:18,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273239975] [2024-11-28 04:05:18,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:18,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:05:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:18,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:05:18,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=123, Unknown=1, NotChecked=0, Total=156 [2024-11-28 04:05:18,217 INFO L87 Difference]: Start difference. First operand 287 states and 346 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:19,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:19,950 INFO L93 Difference]: Finished difference Result 300 states and 353 transitions. [2024-11-28 04:05:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:05:19,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-28 04:05:19,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:19,952 INFO L225 Difference]: With dead ends: 300 [2024-11-28 04:05:19,952 INFO L226 Difference]: Without dead ends: 300 [2024-11-28 04:05:19,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=152, Invalid=399, Unknown=1, NotChecked=0, Total=552 [2024-11-28 04:05:19,952 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 120 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:19,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 128 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:05:19,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-28 04:05:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 287. [2024-11-28 04:05:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 257 states have (on average 1.2412451361867705) internal successors, (319), 272 states have internal predecessors, (319), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 342 transitions. [2024-11-28 04:05:19,962 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 342 transitions. Word has length 29 [2024-11-28 04:05:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:19,962 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 342 transitions. [2024-11-28 04:05:19,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 7 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 342 transitions. [2024-11-28 04:05:19,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:05:19,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:19,963 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:19,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-28 04:05:20,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:05:20,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:20,364 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting parse_inputErr16ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:20,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:20,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1198975028, now seen corresponding path program 1 times [2024-11-28 04:05:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:20,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507427419] [2024-11-28 04:05:20,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:20,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:20,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:20,366 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:05:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:20,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:05:20,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:20,608 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:20,770 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:20,771 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:20,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507427419] [2024-11-28 04:05:20,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507427419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:20,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:20,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2024-11-28 04:05:20,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178023492] [2024-11-28 04:05:20,771 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:20,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:05:20,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:20,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:05:20,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:05:20,772 INFO L87 Difference]: Start difference. First operand 287 states and 342 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:20,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:20,834 INFO L93 Difference]: Finished difference Result 286 states and 341 transitions. [2024-11-28 04:05:20,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:05:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-28 04:05:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:20,837 INFO L225 Difference]: With dead ends: 286 [2024-11-28 04:05:20,837 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 04:05:20,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:05:20,837 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 82 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 04:05:20,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 82 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:05:20,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 04:05:20,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-28 04:05:20,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 257 states have (on average 1.2373540856031129) internal successors, (318), 271 states have internal predecessors, (318), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:20,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 341 transitions. [2024-11-28 04:05:20,848 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 341 transitions. Word has length 40 [2024-11-28 04:05:20,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:20,848 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 341 transitions. [2024-11-28 04:05:20,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 341 transitions. [2024-11-28 04:05:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:05:20,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:20,850 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:20,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:05:21,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:21,051 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting parse_inputErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:21,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1561270818, now seen corresponding path program 1 times [2024-11-28 04:05:21,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:21,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741206185] [2024-11-28 04:05:21,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:21,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:21,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:21,053 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:21,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:05:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:21,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:05:21,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:21,641 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:05:21,641 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 04:05:21,943 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 04:05:22,602 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:22,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:23,393 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:05:23,393 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 15 treesize of output 14 [2024-11-28 04:05:28,197 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:05:28,197 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 15 treesize of output 14 [2024-11-28 04:05:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:28,346 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:28,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741206185] [2024-11-28 04:05:28,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741206185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:28,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:28,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2024-11-28 04:05:28,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418795008] [2024-11-28 04:05:28,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:28,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:05:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:28,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:05:28,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=110, Unknown=4, NotChecked=0, Total=156 [2024-11-28 04:05:28,348 INFO L87 Difference]: Start difference. First operand 286 states and 341 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:32,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:05:35,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:35,543 INFO L93 Difference]: Finished difference Result 297 states and 344 transitions. [2024-11-28 04:05:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:05:35,543 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-28 04:05:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:35,545 INFO L225 Difference]: With dead ends: 297 [2024-11-28 04:05:35,545 INFO L226 Difference]: Without dead ends: 297 [2024-11-28 04:05:35,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=130, Invalid=282, Unknown=8, NotChecked=0, Total=420 [2024-11-28 04:05:35,546 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 160 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 29 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:35,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 104 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 136 Invalid, 10 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:05:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-28 04:05:35,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 280. [2024-11-28 04:05:35,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 253 states have (on average 1.209486166007905) internal successors, (306), 265 states have internal predecessors, (306), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:35,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 329 transitions. [2024-11-28 04:05:35,555 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 329 transitions. Word has length 41 [2024-11-28 04:05:35,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:35,555 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 329 transitions. [2024-11-28 04:05:35,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:35,555 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 329 transitions. [2024-11-28 04:05:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 04:05:35,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:35,556 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:35,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:05:35,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:35,757 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting parse_inputErr17ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:35,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1486479697, now seen corresponding path program 1 times [2024-11-28 04:05:35,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:35,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498244457] [2024-11-28 04:05:35,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:35,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:35,759 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:35,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:05:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:35,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:05:35,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:36,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:36,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:36,531 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:36,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498244457] [2024-11-28 04:05:36,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498244457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:36,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:36,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2024-11-28 04:05:36,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090693386] [2024-11-28 04:05:36,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:36,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:05:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:36,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:05:36,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:05:36,533 INFO L87 Difference]: Start difference. First operand 280 states and 329 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:36,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:36,699 INFO L93 Difference]: Finished difference Result 279 states and 328 transitions. [2024-11-28 04:05:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:05:36,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2024-11-28 04:05:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:36,702 INFO L225 Difference]: With dead ends: 279 [2024-11-28 04:05:36,702 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 04:05:36,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:05:36,705 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:36,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 67 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:05:36,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 04:05:36,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2024-11-28 04:05:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 253 states have (on average 1.2055335968379446) internal successors, (305), 264 states have internal predecessors, (305), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 328 transitions. [2024-11-28 04:05:36,713 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 328 transitions. Word has length 41 [2024-11-28 04:05:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:36,713 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 328 transitions. [2024-11-28 04:05:36,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 328 transitions. [2024-11-28 04:05:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:05:36,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:36,715 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:36,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:05:36,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:36,915 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting parse_inputErr18ASSERT_VIOLATIONMEMORY_FREE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:36,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:36,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1163769750, now seen corresponding path program 1 times [2024-11-28 04:05:36,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:36,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487922113] [2024-11-28 04:05:36,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:36,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:36,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:36,918 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:36,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:05:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:37,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:05:37,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:37,034 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 04:05:37,497 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:05:37,497 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 04:05:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:37,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:38,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:38,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487922113] [2024-11-28 04:05:38,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487922113] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:38,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:38,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2024-11-28 04:05:38,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640165298] [2024-11-28 04:05:38,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:38,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:05:38,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:38,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:05:38,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:05:38,034 INFO L87 Difference]: Start difference. First operand 279 states and 328 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:38,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:38,493 INFO L93 Difference]: Finished difference Result 294 states and 339 transitions. [2024-11-28 04:05:38,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:05:38,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-28 04:05:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:38,494 INFO L225 Difference]: With dead ends: 294 [2024-11-28 04:05:38,494 INFO L226 Difference]: Without dead ends: 294 [2024-11-28 04:05:38,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:05:38,495 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 24 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:38,496 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 139 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:05:38,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-28 04:05:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 282. [2024-11-28 04:05:38,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 256 states have (on average 1.203125) internal successors, (308), 267 states have internal predecessors, (308), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 331 transitions. [2024-11-28 04:05:38,505 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 331 transitions. Word has length 42 [2024-11-28 04:05:38,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:38,505 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 331 transitions. [2024-11-28 04:05:38,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:05:38,506 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 331 transitions. [2024-11-28 04:05:38,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:05:38,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:38,506 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:38,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:38,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:38,707 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:38,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:38,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2033280942, now seen corresponding path program 1 times [2024-11-28 04:05:38,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:38,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877445073] [2024-11-28 04:05:38,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:38,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:38,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:38,713 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:38,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:05:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:38,806 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:05:38,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:05:39,513 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:05:40,684 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877445073] [2024-11-28 04:05:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877445073] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:40,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:05:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889369890] [2024-11-28 04:05:40,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:40,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:05:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:40,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:05:40,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:05:40,686 INFO L87 Difference]: Start difference. First operand 282 states and 331 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:05:42,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:42,030 INFO L93 Difference]: Finished difference Result 297 states and 339 transitions. [2024-11-28 04:05:42,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:05:42,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2024-11-28 04:05:42,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:42,031 INFO L225 Difference]: With dead ends: 297 [2024-11-28 04:05:42,032 INFO L226 Difference]: Without dead ends: 297 [2024-11-28 04:05:42,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:05:42,032 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 199 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:42,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 191 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:05:42,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-28 04:05:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 282. [2024-11-28 04:05:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 256 states have (on average 1.19140625) internal successors, (305), 267 states have internal predecessors, (305), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:42,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 328 transitions. [2024-11-28 04:05:42,041 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 328 transitions. Word has length 47 [2024-11-28 04:05:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:42,041 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 328 transitions. [2024-11-28 04:05:42,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:05:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 328 transitions. [2024-11-28 04:05:42,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:05:42,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:42,043 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:42,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 04:05:42,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:42,243 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting parse_inputErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:42,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:42,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1392800188, now seen corresponding path program 1 times [2024-11-28 04:05:42,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:42,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487883466] [2024-11-28 04:05:42,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:42,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:42,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:42,245 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:42,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:05:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:42,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:05:42,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:43,143 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:05:43,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:44,364 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:05:44,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:44,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487883466] [2024-11-28 04:05:44,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487883466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:44,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2024-11-28 04:05:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903122687] [2024-11-28 04:05:44,365 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:44,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:05:44,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:44,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:05:44,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:05:44,366 INFO L87 Difference]: Start difference. First operand 282 states and 328 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:05:45,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:45,870 INFO L93 Difference]: Finished difference Result 290 states and 332 transitions. [2024-11-28 04:05:45,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:05:45,871 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-28 04:05:45,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:45,873 INFO L225 Difference]: With dead ends: 290 [2024-11-28 04:05:45,873 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:05:45,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:05:45,874 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 187 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:45,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 245 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:05:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:05:45,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 281. [2024-11-28 04:05:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 256 states have (on average 1.17578125) internal successors, (301), 266 states have internal predecessors, (301), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 324 transitions. [2024-11-28 04:05:45,881 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 324 transitions. Word has length 48 [2024-11-28 04:05:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:45,881 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 324 transitions. [2024-11-28 04:05:45,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:05:45,882 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 324 transitions. [2024-11-28 04:05:45,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:05:45,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:45,883 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:45,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:05:46,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:46,083 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:46,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash -524851487, now seen corresponding path program 1 times [2024-11-28 04:05:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:46,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583927812] [2024-11-28 04:05:46,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:46,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:46,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:46,086 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:46,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:05:46,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:46,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:05:46,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:46,352 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:05:46,352 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 04:05:47,002 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:05:47,002 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 04:05:47,214 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-28 04:05:47,214 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 16 treesize of output 17 [2024-11-28 04:05:47,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:47,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:47,739 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:05:47,740 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 66 treesize of output 63 [2024-11-28 04:05:52,811 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-28 04:05:52,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 123 [2024-11-28 04:05:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:53,252 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:05:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583927812] [2024-11-28 04:05:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583927812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:05:53,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:05:53,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 10 [2024-11-28 04:05:53,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614818005] [2024-11-28 04:05:53,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:05:53,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:05:53,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:05:53,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:05:53,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2024-11-28 04:05:53,254 INFO L87 Difference]: Start difference. First operand 281 states and 324 transitions. Second operand has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:53,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:05:53,797 INFO L93 Difference]: Finished difference Result 286 states and 329 transitions. [2024-11-28 04:05:53,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:05:53,797 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 51 [2024-11-28 04:05:53,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:05:53,798 INFO L225 Difference]: With dead ends: 286 [2024-11-28 04:05:53,798 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 04:05:53,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=64, Invalid=117, Unknown=1, NotChecked=0, Total=182 [2024-11-28 04:05:53,799 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 109 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:05:53,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 46 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:05:53,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 04:05:53,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 280. [2024-11-28 04:05:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 256 states have (on average 1.171875) internal successors, (300), 265 states have internal predecessors, (300), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:05:53,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 323 transitions. [2024-11-28 04:05:53,807 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 323 transitions. Word has length 51 [2024-11-28 04:05:53,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:05:53,807 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 323 transitions. [2024-11-28 04:05:53,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.4) internal successors, (64), 11 states have internal predecessors, (64), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:05:53,808 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 323 transitions. [2024-11-28 04:05:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:05:53,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:05:53,809 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:05:53,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:05:54,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:54,009 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:05:54,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:05:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash 909473069, now seen corresponding path program 1 times [2024-11-28 04:05:54,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:05:54,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113682218] [2024-11-28 04:05:54,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:05:54,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:05:54,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:05:54,012 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:05:54,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:05:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:05:54,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 04:05:54,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:05:55,150 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:05:55,150 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 04:05:56,465 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:05:56,465 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 04:05:56,768 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-28 04:05:56,768 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 16 treesize of output 17 [2024-11-28 04:05:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:05:57,543 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:05:58,308 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-11-28 04:05:58,308 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 196 treesize of output 183 [2024-11-28 04:06:03,959 INFO L349 Elim1Store]: treesize reduction 7, result has 82.1 percent of original size [2024-11-28 04:06:03,960 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 3 case distinctions, treesize of input 192 treesize of output 207 [2024-11-28 04:06:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:06:06,296 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:06:06,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113682218] [2024-11-28 04:06:06,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113682218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:06:06,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:06:06,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 25 [2024-11-28 04:06:06,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390186461] [2024-11-28 04:06:06,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:06,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:06:06,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:06:06,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:06:06,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=606, Unknown=1, NotChecked=0, Total=702 [2024-11-28 04:06:06,299 INFO L87 Difference]: Start difference. First operand 280 states and 323 transitions. Second operand has 27 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 22 states have internal predecessors, (94), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:06:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:06:09,020 INFO L93 Difference]: Finished difference Result 293 states and 335 transitions. [2024-11-28 04:06:09,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:06:09,021 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 22 states have internal predecessors, (94), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2024-11-28 04:06:09,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:06:09,023 INFO L225 Difference]: With dead ends: 293 [2024-11-28 04:06:09,023 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 04:06:09,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=221, Invalid=900, Unknown=1, NotChecked=0, Total=1122 [2024-11-28 04:06:09,024 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 310 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:06:09,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 135 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 04:06:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 04:06:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 280. [2024-11-28 04:06:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 256 states have (on average 1.16796875) internal successors, (299), 265 states have internal predecessors, (299), 7 states have call successors, (7), 7 states have call predecessors, (7), 12 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:06:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 322 transitions. [2024-11-28 04:06:09,031 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 322 transitions. Word has length 52 [2024-11-28 04:06:09,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:06:09,032 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 322 transitions. [2024-11-28 04:06:09,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 3.9166666666666665) internal successors, (94), 22 states have internal predecessors, (94), 4 states have call successors, (6), 6 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:06:09,032 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 322 transitions. [2024-11-28 04:06:09,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:06:09,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:06:09,033 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:06:09,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 04:06:09,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:09,233 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting parse_inputErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:06:09,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:06:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash 2125259695, now seen corresponding path program 1 times [2024-11-28 04:06:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:06:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [223093160] [2024-11-28 04:06:09,235 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:06:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:06:09,236 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:06:09,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:06:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:09,332 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:06:09,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:09,977 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:06:09,977 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 04:06:11,373 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-28 04:06:11,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-28 04:06:11,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 32 treesize of output 15 [2024-11-28 04:06:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:06:12,075 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:12,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:06:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223093160] [2024-11-28 04:06:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223093160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:06:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [377627213] [2024-11-28 04:06:12,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:06:12,763 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:06:12,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:06:12,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:06:12,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-28 04:06:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:06:13,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:06:13,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:06:13,624 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:06:13,624 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 04:06:22,203 WARN L873 $PredicateComparison]: unable to prove that (exists ((|parse_input_c1_~x~0#1.base| (_ BitVec 32))) (= |c_#valid| (store (store |c_old(#valid)| |parse_input_c1_~x~0#1.base| (_ bv1 1)) |c_old(~global~0.base)| (select |c_#valid| |c_old(~global~0.base)|)))) is different from true [2024-11-28 04:06:22,449 INFO L349 Elim1Store]: treesize reduction 30, result has 38.8 percent of original size [2024-11-28 04:06:22,449 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 2 case distinctions, treesize of input 19 treesize of output 24 [2024-11-28 04:06:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2024-11-28 04:06:22,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:06:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:06:33,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [377627213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:06:33,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:06:33,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2024-11-28 04:06:33,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298839365] [2024-11-28 04:06:33,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:06:33,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:06:33,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:06:33,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:06:33,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=4, NotChecked=38, Total=462 [2024-11-28 04:06:33,624 INFO L87 Difference]: Start difference. First operand 280 states and 322 transitions. Second operand has 21 states, 19 states have (on average 5.578947368421052) internal successors, (106), 17 states have internal predecessors, (106), 2 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:06:45,927 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 04:06:49,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:06:53,949 WARN L539 Checker$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 04:06:57,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:01,984 WARN L539 Checker$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 04:07:05,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:10,034 WARN L539 Checker$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 04:07:14,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:18,064 WARN L539 Checker$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 04:07:22,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:26,099 WARN L539 Checker$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 04:07:30,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:42,277 WARN L539 Checker$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 04:07:46,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:50,304 WARN L539 Checker$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 04:07:54,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:07:58,314 WARN L539 Checker$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 04:08:02,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:06,322 WARN L539 Checker$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 04:08:10,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:14,363 WARN L539 Checker$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 04:08:18,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:22,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:26,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:30,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:34,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:38,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:42,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:46,446 WARN L539 Checker$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 04:08:50,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:08:54,499 WARN L539 Checker$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 04:08:58,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:02,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:06,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:10,579 WARN L539 Checker$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 04:09:14,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:18,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:22,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:26,599 WARN L539 Checker$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 04:09:30,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:34,849 WARN L539 Checker$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 04:09:38,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:42,897 WARN L539 Checker$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 04:09:46,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:50,958 WARN L539 Checker$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 04:09:54,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:09:59,002 WARN L539 Checker$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 04:10:03,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:07,200 WARN L539 Checker$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 04:10:11,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:15,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:19,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:23,299 WARN L539 Checker$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 04:10:27,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:39,750 WARN L539 Checker$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 04:10:43,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:10:56,250 WARN L539 Checker$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 04:11:00,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:11:20,542 WARN L539 Checker$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 04:11:24,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:11:28,579 WARN L539 Checker$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 04:11:32,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:11:36,596 WARN L539 Checker$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 04:11:40,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:11:44,623 WARN L539 Checker$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 04:11:48,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:11:52,659 WARN L539 Checker$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 04:11:56,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:00,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:04,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:08,683 WARN L539 Checker$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 04:12:12,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:16,697 WARN L539 Checker$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 04:12:20,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:24,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:28,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:32,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:36,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:40,757 WARN L539 Checker$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 04:12:44,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:48,786 WARN L539 Checker$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 04:12:52,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:12:56,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:00,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:04,813 WARN L539 Checker$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 04:13:08,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:13,033 WARN L539 Checker$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 04:13:17,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:21,068 WARN L539 Checker$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 04:13:25,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:29,093 WARN L539 Checker$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 04:13:33,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:37,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:41,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:45,296 WARN L539 Checker$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 04:13:49,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:13:53,305 WARN L539 Checker$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 04:13:57,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:14:01,394 WARN L539 Checker$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 04:14:05,399 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 04:14:14,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:14,326 INFO L93 Difference]: Finished difference Result 293 states and 334 transitions. [2024-11-28 04:14:14,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:14:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.578947368421052) internal successors, (106), 17 states have internal predecessors, (106), 2 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 54 [2024-11-28 04:14:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:14,329 INFO L225 Difference]: With dead ends: 293 [2024-11-28 04:14:14,329 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 04:14:14,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 144 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 76.5s TimeCoverageRelationStatistics Valid=292, Invalid=816, Unknown=18, NotChecked=64, Total=1190 [2024-11-28 04:14:14,329 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 232 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 31 mSolverCounterUnsat, 100 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 402.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 100 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 402.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:14,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 256 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 316 Invalid, 100 Unknown, 87 Unchecked, 402.5s Time] [2024-11-28 04:14:14,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 04:14:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 287. [2024-11-28 04:14:14,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 263 states have (on average 1.1596958174904943) internal successors, (305), 272 states have internal predecessors, (305), 7 states have call successors, (7), 7 states have call predecessors, (7), 13 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2024-11-28 04:14:14,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 328 transitions. [2024-11-28 04:14:14,337 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 328 transitions. Word has length 54 [2024-11-28 04:14:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:14,337 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 328 transitions. [2024-11-28 04:14:14,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.578947368421052) internal successors, (106), 17 states have internal predecessors, (106), 2 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:14:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 328 transitions. [2024-11-28 04:14:14,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:14:14,339 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:14,339 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:14,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:14:14,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-28 04:14:14,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:14:14,740 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting parse_inputErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:14:14,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -506459732, now seen corresponding path program 1 times [2024-11-28 04:14:14,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:14:14,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1596121631] [2024-11-28 04:14:14,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:14,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:14,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:14,743 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:14,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:14:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:14,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:14:14,844 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:14:15,288 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:14:15,946 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:14:15,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596121631] [2024-11-28 04:14:15,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596121631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:14:15,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:14:15,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2024-11-28 04:14:15,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786970352] [2024-11-28 04:14:15,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:15,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:14:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:14:15,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:14:15,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:14:15,947 INFO L87 Difference]: Start difference. First operand 287 states and 328 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:14:16,524 INFO L93 Difference]: Finished difference Result 249 states and 278 transitions. [2024-11-28 04:14:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:14:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-28 04:14:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:14:16,526 INFO L225 Difference]: With dead ends: 249 [2024-11-28 04:14:16,526 INFO L226 Difference]: Without dead ends: 249 [2024-11-28 04:14:16,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:14:16,527 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 58 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:14:16,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 229 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:14:16,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-28 04:14:16,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 243. [2024-11-28 04:14:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 223 states have (on average 1.147982062780269) internal successors, (256), 230 states have internal predecessors, (256), 6 states have call successors, (6), 6 states have call predecessors, (6), 10 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-28 04:14:16,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2024-11-28 04:14:16,534 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 58 [2024-11-28 04:14:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:14:16,534 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2024-11-28 04:14:16,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:14:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2024-11-28 04:14:16,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:14:16,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:14:16,536 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:14:16,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:14:16,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:16,737 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE === [parse_inputErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, parse_inputErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2024-11-28 04:14:16,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:14:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2035852867, now seen corresponding path program 1 times [2024-11-28 04:14:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:14:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [3619574] [2024-11-28 04:14:16,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:16,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:14:16,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:14:16,740 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:14:16,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 04:14:16,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:16,884 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:14:16,891 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:18,241 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 04:14:18,242 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 04:14:20,559 INFO L349 Elim1Store]: treesize reduction 67, result has 31.6 percent of original size [2024-11-28 04:14:20,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 42 treesize of output 89 [2024-11-28 04:14:21,123 INFO L349 Elim1Store]: treesize reduction 81, result has 17.3 percent of original size [2024-11-28 04:14:21,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 78 [2024-11-28 04:14:21,266 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-28 04:14:21,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 15 [2024-11-28 04:14:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:22,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:23,828 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:14:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3619574] [2024-11-28 04:14:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3619574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2087257857] [2024-11-28 04:14:23,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:14:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:14:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:14:23,830 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:14:23,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_35872719-27f9-44a0-bbe5-95c85c3ab2b7/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-28 04:14:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:14:24,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 04:14:24,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:14:25,807 INFO L349 Elim1Store]: treesize reduction 48, result has 32.4 percent of original size [2024-11-28 04:14:25,807 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 04:14:39,861 INFO L349 Elim1Store]: treesize reduction 46, result has 36.1 percent of original size [2024-11-28 04:14:39,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 36 [2024-11-28 04:14:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:14:41,278 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:14:41,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2087257857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:14:41,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:14:41,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2024-11-28 04:14:41,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722676510] [2024-11-28 04:14:41,965 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:14:41,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:14:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:14:41,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:14:41,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=544, Unknown=11, NotChecked=0, Total=650 [2024-11-28 04:14:41,966 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand has 20 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:14:54,463 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 04:14:58,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:10,698 WARN L539 Checker$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 04:15:14,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:18,746 WARN L539 Checker$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 04:15:22,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:26,790 WARN L539 Checker$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 04:15:30,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:34,818 WARN L539 Checker$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 04:15:38,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:42,862 WARN L539 Checker$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 04:15:46,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:50,895 WARN L539 Checker$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 04:15:54,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:15:58,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:02,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:06,930 WARN L539 Checker$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 04:16:10,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:14,973 WARN L539 Checker$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 04:16:18,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:31,213 WARN L539 Checker$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 04:16:35,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:39,260 WARN L539 Checker$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 04:16:43,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:47,291 WARN L539 Checker$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 04:16:51,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:55,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:16:59,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:03,333 WARN L539 Checker$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 04:17:07,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:19,581 WARN L539 Checker$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 04:17:23,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:27,661 WARN L539 Checker$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 04:17:31,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:35,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:39,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:43,717 WARN L539 Checker$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 04:17:47,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:51,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:17:55,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:00,086 WARN L539 Checker$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 04:18:04,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:08,134 WARN L539 Checker$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 04:18:12,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:16,216 WARN L539 Checker$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 04:18:20,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:24,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:28,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:32,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:18:36,298 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]