./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/termination-memory-alloca/cstrspn-alloca-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/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_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/termination-memory-alloca/cstrspn-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/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 64bit --witnessprinter.graph.data.programhash 739cfa6985f5cbe3c485b066571ccf0bd5575c5b24975a1e4ae9d10696731379 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:22,722 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:22,819 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 02:40:22,829 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:22,829 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:22,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:22,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:22,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:22,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:22,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:22,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:22,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:22,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:22,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:22,872 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:22,873 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:22,873 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:22,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:22,873 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:22,874 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:22,874 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:22,875 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:22,875 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:22,875 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:22,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:22,875 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:22,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:22,876 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:22,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:22,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:22,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:22,877 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:22,878 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_00f26366-c1cf-4718-af46-d1b478838028/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739cfa6985f5cbe3c485b066571ccf0bd5575c5b24975a1e4ae9d10696731379 [2024-11-28 02:40:23,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:23,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:23,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:23,193 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:23,193 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:23,194 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/termination-memory-alloca/cstrspn-alloca-2.i [2024-11-28 02:40:26,224 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/data/536fea8a6/8d1aad66a79c4508a7f80f0462dbcbbc/FLAGb9e921e82 [2024-11-28 02:40:26,539 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:26,540 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/sv-benchmarks/c/termination-memory-alloca/cstrspn-alloca-2.i [2024-11-28 02:40:26,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/data/536fea8a6/8d1aad66a79c4508a7f80f0462dbcbbc/FLAGb9e921e82 [2024-11-28 02:40:26,572 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/data/536fea8a6/8d1aad66a79c4508a7f80f0462dbcbbc [2024-11-28 02:40:26,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:26,578 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:26,581 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:26,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:26,587 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:26,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:26" (1/1) ... [2024-11-28 02:40:26,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f031a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:26, skipping insertion in model container [2024-11-28 02:40:26,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:26" (1/1) ... [2024-11-28 02:40:26,632 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:26,987 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 02:40:26,988 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 02:40:26,990 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:27,000 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:27,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:27,075 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:27,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27 WrapperNode [2024-11-28 02:40:27,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:27,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:27,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:27,078 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:27,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,107 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,134 INFO L138 Inliner]: procedures = 111, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2024-11-28 02:40:27,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:27,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:27,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:27,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:27,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,146 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,173 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [4, 3]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2024-11-28 02:40:27,173 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,174 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,180 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,188 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:27,189 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:27,189 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:27,189 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:27,190 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (1/1) ... [2024-11-28 02:40:27,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:27,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:27,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:27,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:40:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:40:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:40:27,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:40:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:40:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:40:27,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:27,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:27,421 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:27,423 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:27,750 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-28 02:40:27,750 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:27,765 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:27,765 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:40:27,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:27 BoogieIcfgContainer [2024-11-28 02:40:27,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:27,768 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:27,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:27,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:27,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:26" (1/3) ... [2024-11-28 02:40:27,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea2baf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:27, skipping insertion in model container [2024-11-28 02:40:27,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:27" (2/3) ... [2024-11-28 02:40:27,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea2baf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:27, skipping insertion in model container [2024-11-28 02:40:27,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:27" (3/3) ... [2024-11-28 02:40:27,781 INFO L128 eAbstractionObserver]: Analyzing ICFG cstrspn-alloca-2.i [2024-11-28 02:40:27,802 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:27,804 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cstrspn-alloca-2.i that has 1 procedures, 42 locations, 1 initial locations, 2 loop locations, and 15 error locations. [2024-11-28 02:40:27,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:27,886 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;@1a237e25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:27,887 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2024-11-28 02:40:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:27,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:40:27,902 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:27,903 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:40:27,904 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:27,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:27,911 INFO L85 PathProgramCache]: Analyzing trace with hash 889510731, now seen corresponding path program 1 times [2024-11-28 02:40:27,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:27,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105924268] [2024-11-28 02:40:27,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:27,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:28,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:28,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105924268] [2024-11-28 02:40:28,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105924268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:28,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:28,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:28,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205055994] [2024-11-28 02:40:28,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:28,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:28,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:28,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:28,313 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:28,403 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 02:40:28,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:28,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:40:28,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:28,415 INFO L225 Difference]: With dead ends: 41 [2024-11-28 02:40:28,415 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 02:40:28,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:28,425 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:28,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 65 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:28,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 02:40:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 02:40:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.76) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-11-28 02:40:28,458 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 6 [2024-11-28 02:40:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:28,459 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-11-28 02:40:28,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-11-28 02:40:28,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:40:28,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:28,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:40:28,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:40:28,460 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:28,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 889510732, now seen corresponding path program 1 times [2024-11-28 02:40:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038761989] [2024-11-28 02:40:28,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:28,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:28,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038761989] [2024-11-28 02:40:28,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038761989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:28,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:28,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:28,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711367727] [2024-11-28 02:40:28,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:28,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:28,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:28,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:28,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:28,864 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:28,899 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2024-11-28 02:40:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:28,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:40:28,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:28,901 INFO L225 Difference]: With dead ends: 42 [2024-11-28 02:40:28,901 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 02:40:28,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:28,902 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:28,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 02:40:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2024-11-28 02:40:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 41 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2024-11-28 02:40:28,914 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2024-11-28 02:40:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:28,914 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2024-11-28 02:40:28,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2024-11-28 02:40:28,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:40:28,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:28,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:40:28,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:40:28,916 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:28,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:28,919 INFO L85 PathProgramCache]: Analyzing trace with hash 889570314, now seen corresponding path program 1 times [2024-11-28 02:40:28,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:28,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088436413] [2024-11-28 02:40:28,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:28,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:29,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:29,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:29,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088436413] [2024-11-28 02:40:29,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088436413] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:29,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:29,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:29,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533068491] [2024-11-28 02:40:29,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:29,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:29,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:29,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:29,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:29,240 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:29,335 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2024-11-28 02:40:29,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:29,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:40:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:29,336 INFO L225 Difference]: With dead ends: 41 [2024-11-28 02:40:29,337 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 02:40:29,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:29,339 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:29,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 100 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:29,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 02:40:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2024-11-28 02:40:29,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.72) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2024-11-28 02:40:29,348 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2024-11-28 02:40:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:29,349 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2024-11-28 02:40:29,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2024-11-28 02:40:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:40:29,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:29,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:29,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:40:29,352 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:29,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028874, now seen corresponding path program 1 times [2024-11-28 02:40:29,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:29,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221084758] [2024-11-28 02:40:29,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:29,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:29,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:29,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221084758] [2024-11-28 02:40:29,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221084758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:29,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:29,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:29,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703937028] [2024-11-28 02:40:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:29,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:29,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:29,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:29,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:29,791 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:29,918 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-28 02:40:29,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:29,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:40:29,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:29,920 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:40:29,921 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:29,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:29,923 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:29,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 115 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:29,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2024-11-28 02:40:29,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 25 states have (on average 1.68) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-11-28 02:40:29,929 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 7 [2024-11-28 02:40:29,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:29,929 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-11-28 02:40:29,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:29,930 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-11-28 02:40:29,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:40:29,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:29,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:29,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:40:29,930 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:29,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:29,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1805028875, now seen corresponding path program 1 times [2024-11-28 02:40:29,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:29,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060452213] [2024-11-28 02:40:29,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:29,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:30,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060452213] [2024-11-28 02:40:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060452213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002488576] [2024-11-28 02:40:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:30,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:30,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:30,103 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:30,158 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-28 02:40:30,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:30,159 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:40:30,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:30,160 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:40:30,160 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:30,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:30,161 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:30,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:30,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:40:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-28 02:40:30,166 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 7 [2024-11-28 02:40:30,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:30,166 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-28 02:40:30,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-28 02:40:30,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:40:30,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:30,167 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:30,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:40:30,168 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:30,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1805088457, now seen corresponding path program 1 times [2024-11-28 02:40:30,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:30,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854214497] [2024-11-28 02:40:30,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:30,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:30,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854214497] [2024-11-28 02:40:30,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854214497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:30,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439139001] [2024-11-28 02:40:30,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:30,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:30,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:30,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:30,362 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:30,392 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2024-11-28 02:40:30,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:40:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:30,396 INFO L225 Difference]: With dead ends: 39 [2024-11-28 02:40:30,396 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 02:40:30,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:30,397 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:30,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 02:40:30,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-28 02:40:30,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 25 states have (on average 1.64) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2024-11-28 02:40:30,406 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 7 [2024-11-28 02:40:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:30,406 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2024-11-28 02:40:30,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,406 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2024-11-28 02:40:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:40:30,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:30,408 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:30,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:40:30,409 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:30,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,409 INFO L85 PathProgramCache]: Analyzing trace with hash -534039922, now seen corresponding path program 1 times [2024-11-28 02:40:30,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:30,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943575972] [2024-11-28 02:40:30,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:30,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:30,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943575972] [2024-11-28 02:40:30,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943575972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087463011] [2024-11-28 02:40:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:30,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:30,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:30,502 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:30,572 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2024-11-28 02:40:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:30,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 02:40:30,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:30,573 INFO L225 Difference]: With dead ends: 34 [2024-11-28 02:40:30,574 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 02:40:30,574 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:30,576 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:30,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 48 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:30,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 02:40:30,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-28 02:40:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.56) internal successors, (39), 33 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2024-11-28 02:40:30,582 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 9 [2024-11-28 02:40:30,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:30,582 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2024-11-28 02:40:30,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,583 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2024-11-28 02:40:30,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 02:40:30,583 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:30,583 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:30,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:40:30,583 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:30,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,587 INFO L85 PathProgramCache]: Analyzing trace with hash -534039921, now seen corresponding path program 1 times [2024-11-28 02:40:30,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:30,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496486003] [2024-11-28 02:40:30,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:30,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:30,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496486003] [2024-11-28 02:40:30,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496486003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:40:30,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244066902] [2024-11-28 02:40:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:40:30,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:30,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:40:30,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:30,804 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:30,926 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2024-11-28 02:40:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:40:30,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 02:40:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:30,929 INFO L225 Difference]: With dead ends: 55 [2024-11-28 02:40:30,930 INFO L226 Difference]: Without dead ends: 55 [2024-11-28 02:40:30,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:30,932 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:30,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 106 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:30,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-28 02:40:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 38. [2024-11-28 02:40:30,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-28 02:40:30,943 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 9 [2024-11-28 02:40:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:30,944 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-28 02:40:30,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-28 02:40:30,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 02:40:30,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:30,945 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:30,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:40:30,946 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:30,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1693101284, now seen corresponding path program 1 times [2024-11-28 02:40:30,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:30,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979981833] [2024-11-28 02:40:30,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:31,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:31,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:31,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979981833] [2024-11-28 02:40:31,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979981833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:31,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:31,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:31,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782550577] [2024-11-28 02:40:31,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:31,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:31,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:31,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:31,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:31,199 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:31,249 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-11-28 02:40:31,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:31,250 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 02:40:31,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:31,251 INFO L225 Difference]: With dead ends: 37 [2024-11-28 02:40:31,251 INFO L226 Difference]: Without dead ends: 34 [2024-11-28 02:40:31,251 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:31,252 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 50 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 02:40:31,252 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 50 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-28 02:40:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-28 02:40:31,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-28 02:40:31,256 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 13 [2024-11-28 02:40:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:31,256 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-28 02:40:31,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-28 02:40:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:40:31,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:31,257 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:31,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:40:31,258 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:31,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -949703880, now seen corresponding path program 1 times [2024-11-28 02:40:31,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:31,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580468622] [2024-11-28 02:40:31,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:31,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:31,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580468622] [2024-11-28 02:40:31,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580468622] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:31,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:31,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294235761] [2024-11-28 02:40:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:31,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:31,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:31,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:31,347 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:31,413 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2024-11-28 02:40:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:31,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 02:40:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:31,414 INFO L225 Difference]: With dead ends: 31 [2024-11-28 02:40:31,414 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 02:40:31,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:40:31,415 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 29 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:31,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 44 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 02:40:31,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-28 02:40:31,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2024-11-28 02:40:31,419 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 14 [2024-11-28 02:40:31,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:31,419 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2024-11-28 02:40:31,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2024-11-28 02:40:31,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:40:31,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:31,420 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:31,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:40:31,420 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:31,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -949703879, now seen corresponding path program 1 times [2024-11-28 02:40:31,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:31,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48827199] [2024-11-28 02:40:31,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:31,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:31,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:31,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48827199] [2024-11-28 02:40:31,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48827199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:31,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:31,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:40:31,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836043763] [2024-11-28 02:40:31,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:31,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:40:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:31,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:40:31,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:40:31,680 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:31,782 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2024-11-28 02:40:31,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:31,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 02:40:31,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:31,784 INFO L225 Difference]: With dead ends: 39 [2024-11-28 02:40:31,784 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 02:40:31,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:40:31,785 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 38 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:31,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 62 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 02:40:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2024-11-28 02:40:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2024-11-28 02:40:31,790 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 14 [2024-11-28 02:40:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:31,790 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2024-11-28 02:40:31,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2024-11-28 02:40:31,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 02:40:31,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:31,791 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:31,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:40:31,791 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:31,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1682628105, now seen corresponding path program 1 times [2024-11-28 02:40:31,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:31,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930280859] [2024-11-28 02:40:31,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:31,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:31,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:31,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:31,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930280859] [2024-11-28 02:40:31,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930280859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:31,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:31,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280872815] [2024-11-28 02:40:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:31,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:31,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:31,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:31,851 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:31,864 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2024-11-28 02:40:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-28 02:40:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:31,866 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:40:31,867 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:31,867 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 02:40:31,869 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:31,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:31,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:31,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:40:31,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 39 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2024-11-28 02:40:31,875 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 19 [2024-11-28 02:40:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:31,878 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2024-11-28 02:40:31,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2024-11-28 02:40:31,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:40:31,879 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:31,879 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 02:40:31,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:40:31,880 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:31,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:31,880 INFO L85 PathProgramCache]: Analyzing trace with hash 621928056, now seen corresponding path program 1 times [2024-11-28 02:40:31,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:31,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589834335] [2024-11-28 02:40:31,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:32,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:32,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:32,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589834335] [2024-11-28 02:40:32,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589834335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:32,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:32,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:40:32,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783126522] [2024-11-28 02:40:32,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:32,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:40:32,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:32,135 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:40:32,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:32,136 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:32,330 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2024-11-28 02:40:32,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:40:32,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 02:40:32,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:32,332 INFO L225 Difference]: With dead ends: 43 [2024-11-28 02:40:32,332 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:32,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:40:32,333 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:32,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 104 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:32,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:40:32,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 39 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-28 02:40:32,341 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 20 [2024-11-28 02:40:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:32,341 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-28 02:40:32,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-28 02:40:32,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 02:40:32,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:32,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:32,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:40:32,342 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:32,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:32,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1917536556, now seen corresponding path program 1 times [2024-11-28 02:40:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:32,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20921247] [2024-11-28 02:40:32,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:32,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:40:32,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:32,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20921247] [2024-11-28 02:40:32,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20921247] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:32,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:32,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:40:32,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708853089] [2024-11-28 02:40:32,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:32,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:40:32,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:32,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:40:32,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:40:32,664 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:32,718 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2024-11-28 02:40:32,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:40:32,719 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 02:40:32,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:32,720 INFO L225 Difference]: With dead ends: 47 [2024-11-28 02:40:32,720 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:32,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:40:32,721 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:32,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 127 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:40:32,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:40:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-28 02:40:32,724 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2024-11-28 02:40:32,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:32,724 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-28 02:40:32,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-28 02:40:32,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 02:40:32,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:32,725 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:32,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:40:32,726 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:32,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash 228592814, now seen corresponding path program 1 times [2024-11-28 02:40:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:32,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088110826] [2024-11-28 02:40:32,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:32,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:33,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:33,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:33,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088110826] [2024-11-28 02:40:33,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088110826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:33,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:33,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:40:33,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20400764] [2024-11-28 02:40:33,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:33,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:40:33,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:33,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:40:33,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:40:33,018 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:33,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:33,157 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2024-11-28 02:40:33,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:40:33,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 02:40:33,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:33,158 INFO L225 Difference]: With dead ends: 52 [2024-11-28 02:40:33,158 INFO L226 Difference]: Without dead ends: 40 [2024-11-28 02:40:33,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:40:33,159 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:33,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 170 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:40:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-28 02:40:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-28 02:40:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 39 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:33,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2024-11-28 02:40:33,162 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 21 [2024-11-28 02:40:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:33,163 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2024-11-28 02:40:33,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2024-11-28 02:40:33,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-28 02:40:33,163 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:33,163 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:33,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:40:33,164 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:33,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1765551892, now seen corresponding path program 1 times [2024-11-28 02:40:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677462303] [2024-11-28 02:40:33,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:33,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677462303] [2024-11-28 02:40:33,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677462303] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:33,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628477882] [2024-11-28 02:40:33,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:33,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:33,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:33,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:40:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:33,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 02:40:33,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:33,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-28 02:40:34,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:40:34,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2024-11-28 02:40:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:34,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:40:35,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-28 02:40:35,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:40:35,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 02:40:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:35,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628477882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:40:35,286 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:40:35,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2024-11-28 02:40:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331708884] [2024-11-28 02:40:35,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:40:35,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:40:35,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:35,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:40:35,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:40:35,288 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:36,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:36,363 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2024-11-28 02:40:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:40:36,364 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-28 02:40:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:36,365 INFO L225 Difference]: With dead ends: 49 [2024-11-28 02:40:36,365 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 02:40:36,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:40:36,366 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 118 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:36,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 148 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:40:36,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 02:40:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2024-11-28 02:40:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2024-11-28 02:40:36,370 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 21 [2024-11-28 02:40:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:36,370 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2024-11-28 02:40:36,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.260869565217391) internal successors, (52), 24 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2024-11-28 02:40:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 02:40:36,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:36,371 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:36,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:40:36,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:36,572 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:36,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:36,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1102530549, now seen corresponding path program 1 times [2024-11-28 02:40:36,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:36,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638306324] [2024-11-28 02:40:36,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:36,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:36,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638306324] [2024-11-28 02:40:36,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638306324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:36,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874778959] [2024-11-28 02:40:36,996 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:36,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:36,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:37,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:37,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:40:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:37,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:40:37,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:37,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-28 02:40:37,444 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-11-28 02:40:37,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2024-11-28 02:40:37,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:40:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:37,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:40:37,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-28 02:40:38,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2024-11-28 02:40:38,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:40:38,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-28 02:40:38,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:38,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874778959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:40:38,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:40:38,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2024-11-28 02:40:38,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637801261] [2024-11-28 02:40:38,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:40:38,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:40:38,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:38,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:40:38,135 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:40:38,135 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:38,876 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2024-11-28 02:40:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:40:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-28 02:40:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:38,877 INFO L225 Difference]: With dead ends: 54 [2024-11-28 02:40:38,878 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 02:40:38,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 02:40:38,879 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 55 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:38,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 150 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:40:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 02:40:38,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2024-11-28 02:40:38,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2024-11-28 02:40:38,882 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2024-11-28 02:40:38,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:38,883 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2024-11-28 02:40:38,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 22 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2024-11-28 02:40:38,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 02:40:38,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:38,884 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:38,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:40:39,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:40:39,088 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:40:39,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1745165287, now seen corresponding path program 2 times [2024-11-28 02:40:39,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:40:39,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081608587] [2024-11-28 02:40:39,089 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:40:39,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:40:39,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:40:39,116 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:39,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:40:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081608587] [2024-11-28 02:40:39,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081608587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:40:39,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774066362] [2024-11-28 02:40:39,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:40:39,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:39,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:39,858 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:39,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:40:39,952 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:40:39,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:40:39,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 02:40:39,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:39,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:40:40,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-28 02:40:43,959 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-28 02:40:43,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 20 [2024-11-28 02:40:43,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:43,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:40:44,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2024-11-28 02:40:44,741 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 0 case distinctions, treesize of input 29 treesize of output 23 [2024-11-28 02:40:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:44,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774066362] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:40:44,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:40:44,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 14] total 35 [2024-11-28 02:40:44,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096677625] [2024-11-28 02:40:44,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:40:44,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 02:40:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:40:44,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 02:40:44,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1107, Unknown=7, NotChecked=0, Total=1260 [2024-11-28 02:40:44,861 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 36 states, 35 states have (on average 2.085714285714286) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:57,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:02,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:07,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 02:41:08,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:08,909 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2024-11-28 02:41:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 02:41:08,910 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.085714285714286) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-28 02:41:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:08,910 INFO L225 Difference]: With dead ends: 71 [2024-11-28 02:41:08,911 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 02:41:08,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=543, Invalid=3101, Unknown=16, NotChecked=0, Total=3660 [2024-11-28 02:41:08,913 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 213 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 7 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:08,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 254 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 532 Invalid, 17 Unknown, 0 Unchecked, 18.5s Time] [2024-11-28 02:41:08,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 02:41:08,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2024-11-28 02:41:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 58 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2024-11-28 02:41:08,922 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 28 [2024-11-28 02:41:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:08,923 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2024-11-28 02:41:08,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.085714285714286) internal successors, (73), 36 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:08,923 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2024-11-28 02:41:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 02:41:08,924 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:08,924 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:08,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:41:09,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:41:09,125 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2024-11-28 02:41:09,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1349856601, now seen corresponding path program 3 times [2024-11-28 02:41:09,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:41:09,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581725121] [2024-11-28 02:41:09,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:41:09,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:41:09,182 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:41:09,182 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:41:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:10,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:41:10,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581725121] [2024-11-28 02:41:10,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581725121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:10,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086750052] [2024-11-28 02:41:10,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:41:10,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:10,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:10,528 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:10,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:41:10,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 02:41:10,665 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:41:10,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-28 02:41:10,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:10,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:41:10,718 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2024-11-28 02:41:12,946 INFO L349 Elim1Store]: treesize reduction 4, result has 87.9 percent of original size [2024-11-28 02:41:12,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2024-11-28 02:41:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 02:41:13,163 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:50,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 67 [2024-11-28 02:41:51,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:41:51,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 127 treesize of output 235 [2024-11-28 02:41:51,186 WARN L672 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2024-11-28 02:41:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:51,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086750052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:41:51,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:41:51,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 31] total 58 [2024-11-28 02:41:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107888061] [2024-11-28 02:41:51,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:41:51,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-28 02:41:51,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:41:51,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-28 02:41:51,906 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=3025, Unknown=6, NotChecked=0, Total=3422 [2024-11-28 02:41:51,906 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 59 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:54,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:54,673 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2024-11-28 02:41:54,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-28 02:41:54,674 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 59 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 02:41:54,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:54,674 INFO L225 Difference]: With dead ends: 63 [2024-11-28 02:41:54,675 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:41:54,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 60 SyntacticMatches, 9 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2372 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=1235, Invalid=6069, Unknown=6, NotChecked=0, Total=7310 [2024-11-28 02:41:54,678 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 274 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:54,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 218 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:41:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:41:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:41:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:54,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:41:54,680 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2024-11-28 02:41:54,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:54,680 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:41:54,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.2758620689655173) internal successors, (132), 59 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:41:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:41:54,680 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:41:54,683 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2024-11-28 02:41:54,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2024-11-28 02:41:54,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2024-11-28 02:41:54,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2024-11-28 02:41:54,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 15 remaining) [2024-11-28 02:41:54,684 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2024-11-28 02:41:54,685 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2024-11-28 02:41:54,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 15 remaining) [2024-11-28 02:41:54,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 15 remaining) [2024-11-28 02:41:54,686 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (0 of 15 remaining) [2024-11-28 02:41:54,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:54,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:54,889 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:54,893 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:41:54,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:41:54 BoogieIcfgContainer [2024-11-28 02:41:54,897 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:41:54,898 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:41:54,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:41:54,898 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:41:54,901 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:27" (3/4) ... [2024-11-28 02:41:54,903 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:41:54,913 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 02:41:54,914 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 02:41:54,915 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 02:41:54,915 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:41:54,988 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:41:54,989 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:41:54,989 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:41:54,990 INFO L158 Benchmark]: Toolchain (without parser) took 88411.99ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 91.6MB in the beginning and 100.9MB in the end (delta: -9.3MB). Peak memory consumption was 94.1MB. Max. memory is 16.1GB. [2024-11-28 02:41:54,990 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:41:54,990 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.43ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 75.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:41:54,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.19ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:41:54,993 INFO L158 Benchmark]: Boogie Preprocessor took 53.14ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:41:54,994 INFO L158 Benchmark]: RCFGBuilder took 577.31ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 57.0MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:41:54,994 INFO L158 Benchmark]: TraceAbstraction took 87129.18ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 56.4MB in the beginning and 105.8MB in the end (delta: -49.4MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2024-11-28 02:41:54,994 INFO L158 Benchmark]: Witness Printer took 90.90ms. Allocated memory is still 218.1MB. Free memory was 105.8MB in the beginning and 100.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:41:54,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 495.43ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 75.1MB in the end (delta: 16.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.19ms. Allocated memory is still 117.4MB. Free memory was 75.1MB in the beginning and 73.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 53.14ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 71.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 577.31ms. Allocated memory is still 117.4MB. Free memory was 71.6MB in the beginning and 57.0MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 87129.18ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 56.4MB in the beginning and 105.8MB in the end (delta: -49.4MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 90.90ms. Allocated memory is still 218.1MB. Free memory was 105.8MB in the beginning and 100.9MB in the end (delta: 4.9MB). Peak memory consumption was 8.4MB. 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 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 562]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 87.0s, OverallIterations: 19, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 30.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 mSolverCounterUnknown, 854 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 854 mSDsluCounter, 2067 SdHoareTripleChecker+Invalid, 20.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1563 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1970 IncrementalHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 504 mSDtfsCounter, 1970 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 448 GetRequests, 164 SyntacticMatches, 14 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3371 ImplicationChecksByTransitivity, 53.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=18, InterpolantAutomatonStates: 169, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 70 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 54.7s InterpolantComputationTime, 433 NumberOfCodeBlocks, 433 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 533 ConstructedInterpolants, 119 QuantifiedInterpolants, 8915 SizeOfPredicates, 34 NumberOfNonLiveVariables, 636 ConjunctsInSsa, 197 ConjunctsInUnsatCore, 27 InterpolantComputations, 15 PerfectInterpolantSequences, 79/370 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 - AllSpecificationsHoldResult: All specifications hold 15 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:41:55,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00f26366-c1cf-4718-af46-d1b478838028/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 Writing output log to file Ultimate.log Result: TRUE