./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0d6c543285e4316d7bccce7ec33cf3dc3eeb4c474821e85404caf1203b5dfc7e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 13:18:04,938 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 13:18:04,997 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-01 13:18:05,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 13:18:05,002 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 13:18:05,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 13:18:05,025 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 13:18:05,025 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 13:18:05,026 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 13:18:05,026 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 13:18:05,026 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 13:18:05,026 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 13:18:05,026 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 13:18:05,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-01 13:18:05,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 13:18:05,028 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:18:05,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:18:05,028 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:18:05,029 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 13:18:05,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 13:18:05,030 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_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6c543285e4316d7bccce7ec33cf3dc3eeb4c474821e85404caf1203b5dfc7e [2024-12-01 13:18:05,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 13:18:05,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 13:18:05,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 13:18:05,275 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 13:18:05,276 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 13:18:05,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i [2024-12-01 13:18:07,969 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/data/4fe48d2c9/e8287c6004d14776af41af58592d2d5f/FLAGb51dcd880 [2024-12-01 13:18:08,217 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 13:18:08,218 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/sv-benchmarks/c/memsafety-ext/skiplist_2lvl.i [2024-12-01 13:18:08,230 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/data/4fe48d2c9/e8287c6004d14776af41af58592d2d5f/FLAGb51dcd880 [2024-12-01 13:18:08,246 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/data/4fe48d2c9/e8287c6004d14776af41af58592d2d5f [2024-12-01 13:18:08,248 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 13:18:08,250 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 13:18:08,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 13:18:08,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 13:18:08,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 13:18:08,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340172eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08, skipping insertion in model container [2024-12-01 13:18:08,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 13:18:08,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:18:08,519 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 13:18:08,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 13:18:08,582 INFO L204 MainTranslator]: Completed translation [2024-12-01 13:18:08,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08 WrapperNode [2024-12-01 13:18:08,583 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 13:18:08,584 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 13:18:08,584 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 13:18:08,584 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 13:18:08,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,618 INFO L138 Inliner]: procedures = 127, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-12-01 13:18:08,618 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 13:18:08,619 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 13:18:08,619 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 13:18:08,619 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 13:18:08,626 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,626 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,629 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,646 INFO L175 MemorySlicer]: Split 31 memory accesses to 3 slices as follows [2, 13, 16]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 11 writes are split as follows [0, 3, 8]. [2024-12-01 13:18:08,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,655 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 13:18:08,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 13:18:08,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 13:18:08,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 13:18:08,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (1/1) ... [2024-12-01 13:18:08,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 13:18:08,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:08,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 13:18:08,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-01 13:18:08,710 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-01 13:18:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 13:18:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 13:18:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 13:18:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-01 13:18:08,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 13:18:08,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 13:18:08,804 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 13:18:08,805 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 13:18:09,163 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2024-12-01 13:18:09,163 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 13:18:09,175 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 13:18:09,175 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-01 13:18:09,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:18:09 BoogieIcfgContainer [2024-12-01 13:18:09,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 13:18:09,178 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 13:18:09,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 13:18:09,183 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 13:18:09,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 01:18:08" (1/3) ... [2024-12-01 13:18:09,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e995f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:18:09, skipping insertion in model container [2024-12-01 13:18:09,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 01:18:08" (2/3) ... [2024-12-01 13:18:09,184 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737e995f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 01:18:09, skipping insertion in model container [2024-12-01 13:18:09,184 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 01:18:09" (3/3) ... [2024-12-01 13:18:09,185 INFO L128 eAbstractionObserver]: Analyzing ICFG skiplist_2lvl.i [2024-12-01 13:18:09,200 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 13:18:09,201 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG skiplist_2lvl.i that has 1 procedures, 134 locations, 1 initial locations, 4 loop locations, and 65 error locations. [2024-12-01 13:18:09,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 13:18:09,259 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;@11ef2dd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 13:18:09,259 INFO L334 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2024-12-01 13:18:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 68 states have (on average 2.1176470588235294) internal successors, (144), 133 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-01 13:18:09,266 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:09,267 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-12-01 13:18:09,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:09,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:09,271 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2024-12-01 13:18:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:09,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417322819] [2024-12-01 13:18:09,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:09,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:09,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:09,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417322819] [2024-12-01 13:18:09,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417322819] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:09,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:09,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:18:09,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334741401] [2024-12-01 13:18:09,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:09,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:18:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:09,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:18:09,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:18:09,493 INFO L87 Difference]: Start difference. First operand has 134 states, 68 states have (on average 2.1176470588235294) internal successors, (144), 133 states have internal predecessors, (144), 0 states have call successors, (0), 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 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:09,648 INFO L93 Difference]: Finished difference Result 127 states and 133 transitions. [2024-12-01 13:18:09,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:18:09,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-12-01 13:18:09,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:09,657 INFO L225 Difference]: With dead ends: 127 [2024-12-01 13:18:09,657 INFO L226 Difference]: Without dead ends: 125 [2024-12-01 13:18:09,659 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 [2024-12-01 13:18:09,661 INFO L435 NwaCegarLoop]: 109 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:09,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 166 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:09,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-01 13:18:09,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-12-01 13:18:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 67 states have (on average 1.955223880597015) internal successors, (131), 124 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 131 transitions. [2024-12-01 13:18:09,696 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 131 transitions. Word has length 3 [2024-12-01 13:18:09,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:09,696 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 131 transitions. [2024-12-01 13:18:09,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,696 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 131 transitions. [2024-12-01 13:18:09,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-12-01 13:18:09,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:09,697 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-12-01 13:18:09,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 13:18:09,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:09,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:09,698 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2024-12-01 13:18:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:09,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33003098] [2024-12-01 13:18:09,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:09,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:09,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:09,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33003098] [2024-12-01 13:18:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33003098] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:09,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:09,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:18:09,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157322751] [2024-12-01 13:18:09,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:09,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:18:09,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:09,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:18:09,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:18:09,802 INFO L87 Difference]: Start difference. First operand 125 states and 131 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:09,904 INFO L93 Difference]: Finished difference Result 118 states and 124 transitions. [2024-12-01 13:18:09,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:18:09,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-12-01 13:18:09,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:09,906 INFO L225 Difference]: With dead ends: 118 [2024-12-01 13:18:09,906 INFO L226 Difference]: Without dead ends: 118 [2024-12-01 13:18:09,906 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 [2024-12-01 13:18:09,907 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 21 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:09,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 168 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:09,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-01 13:18:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-12-01 13:18:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 67 states have (on average 1.8507462686567164) internal successors, (124), 117 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 124 transitions. [2024-12-01 13:18:09,914 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 124 transitions. Word has length 3 [2024-12-01 13:18:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:09,914 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 124 transitions. [2024-12-01 13:18:09,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 124 transitions. [2024-12-01 13:18:09,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-01 13:18:09,915 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:09,915 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:09,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 13:18:09,915 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:09,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1056606480, now seen corresponding path program 1 times [2024-12-01 13:18:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389523897] [2024-12-01 13:18:09,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:10,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:10,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:10,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389523897] [2024-12-01 13:18:10,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389523897] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:10,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:10,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:18:10,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776407868] [2024-12-01 13:18:10,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:10,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:18:10,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:10,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:18:10,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:10,139 INFO L87 Difference]: Start difference. First operand 118 states and 124 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:10,307 INFO L93 Difference]: Finished difference Result 117 states and 123 transitions. [2024-12-01 13:18:10,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:10,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-12-01 13:18:10,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:10,308 INFO L225 Difference]: With dead ends: 117 [2024-12-01 13:18:10,308 INFO L226 Difference]: Without dead ends: 117 [2024-12-01 13:18:10,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:10,309 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 16 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:10,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 283 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:10,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-12-01 13:18:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-12-01 13:18:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 67 states have (on average 1.835820895522388) internal successors, (123), 116 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 123 transitions. [2024-12-01 13:18:10,313 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 123 transitions. Word has length 10 [2024-12-01 13:18:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:10,314 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 123 transitions. [2024-12-01 13:18:10,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 123 transitions. [2024-12-01 13:18:10,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-01 13:18:10,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:10,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:10,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 13:18:10,315 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:10,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:10,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1056606481, now seen corresponding path program 1 times [2024-12-01 13:18:10,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:10,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896284184] [2024-12-01 13:18:10,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:10,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:10,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:10,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896284184] [2024-12-01 13:18:10,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896284184] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:10,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:10,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:18:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435461760] [2024-12-01 13:18:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:10,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:18:10,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:10,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:18:10,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:10,591 INFO L87 Difference]: Start difference. First operand 117 states and 123 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:10,814 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2024-12-01 13:18:10,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:10,815 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-12-01 13:18:10,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:10,816 INFO L225 Difference]: With dead ends: 116 [2024-12-01 13:18:10,816 INFO L226 Difference]: Without dead ends: 116 [2024-12-01 13:18:10,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:10,817 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 32 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:10,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 266 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:10,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-01 13:18:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-12-01 13:18:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 67 states have (on average 1.8208955223880596) internal successors, (122), 115 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 122 transitions. [2024-12-01 13:18:10,822 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 122 transitions. Word has length 10 [2024-12-01 13:18:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:10,822 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 122 transitions. [2024-12-01 13:18:10,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 122 transitions. [2024-12-01 13:18:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-01 13:18:10,823 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:10,823 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:10,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 13:18:10,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:10,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937495, now seen corresponding path program 1 times [2024-12-01 13:18:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:10,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195304246] [2024-12-01 13:18:10,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:10,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:10,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195304246] [2024-12-01 13:18:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195304246] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:18:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121181107] [2024-12-01 13:18:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:10,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:18:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:10,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:18:10,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:10,886 INFO L87 Difference]: Start difference. First operand 116 states and 122 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:10,992 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-12-01 13:18:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-01 13:18:10,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:10,993 INFO L225 Difference]: With dead ends: 115 [2024-12-01 13:18:10,994 INFO L226 Difference]: Without dead ends: 115 [2024-12-01 13:18:10,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:10,994 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 3 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:10,995 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 389 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:10,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-12-01 13:18:10,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-12-01 13:18:10,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 67 states have (on average 1.8059701492537314) internal successors, (121), 114 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2024-12-01 13:18:11,000 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 11 [2024-12-01 13:18:11,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:11,000 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2024-12-01 13:18:11,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,000 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2024-12-01 13:18:11,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-01 13:18:11,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:11,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:11,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 13:18:11,001 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:11,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:11,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937494, now seen corresponding path program 1 times [2024-12-01 13:18:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:11,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795711546] [2024-12-01 13:18:11,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:11,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795711546] [2024-12-01 13:18:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795711546] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:11,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:11,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:18:11,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791516273] [2024-12-01 13:18:11,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:11,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:18:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:11,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:18:11,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:18:11,328 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:11,523 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2024-12-01 13:18:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:11,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-01 13:18:11,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:11,524 INFO L225 Difference]: With dead ends: 114 [2024-12-01 13:18:11,524 INFO L226 Difference]: Without dead ends: 114 [2024-12-01 13:18:11,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-01 13:18:11,525 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 32 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:11,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 266 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:11,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-12-01 13:18:11,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-12-01 13:18:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 67 states have (on average 1.791044776119403) internal successors, (120), 113 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2024-12-01 13:18:11,530 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 11 [2024-12-01 13:18:11,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:11,530 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2024-12-01 13:18:11,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,530 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2024-12-01 13:18:11,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-01 13:18:11,531 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:11,531 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:11,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 13:18:11,531 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:11,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:11,532 INFO L85 PathProgramCache]: Analyzing trace with hash -266592339, now seen corresponding path program 1 times [2024-12-01 13:18:11,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:11,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450671629] [2024-12-01 13:18:11,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:11,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:11,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:11,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450671629] [2024-12-01 13:18:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450671629] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:11,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:18:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714094824] [2024-12-01 13:18:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:11,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:18:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:11,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:18:11,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:11,639 INFO L87 Difference]: Start difference. First operand 114 states and 120 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:11,756 INFO L93 Difference]: Finished difference Result 113 states and 119 transitions. [2024-12-01 13:18:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:11,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-12-01 13:18:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:11,757 INFO L225 Difference]: With dead ends: 113 [2024-12-01 13:18:11,757 INFO L226 Difference]: Without dead ends: 113 [2024-12-01 13:18:11,757 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 [2024-12-01 13:18:11,758 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 6 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:11,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 279 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:11,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-12-01 13:18:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-12-01 13:18:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.7761194029850746) internal successors, (119), 112 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 119 transitions. [2024-12-01 13:18:11,763 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 119 transitions. Word has length 15 [2024-12-01 13:18:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:11,763 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 119 transitions. [2024-12-01 13:18:11,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:11,763 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 119 transitions. [2024-12-01 13:18:11,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-01 13:18:11,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:11,763 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:11,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-01 13:18:11,764 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:11,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:11,764 INFO L85 PathProgramCache]: Analyzing trace with hash -266592338, now seen corresponding path program 1 times [2024-12-01 13:18:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:11,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295111328] [2024-12-01 13:18:11,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:11,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:11,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295111328] [2024-12-01 13:18:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295111328] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:11,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:11,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:18:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111586049] [2024-12-01 13:18:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:11,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:18:11,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:11,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:18:11,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:11,945 INFO L87 Difference]: Start difference. First operand 113 states and 119 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:12,092 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2024-12-01 13:18:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2024-12-01 13:18:12,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:12,093 INFO L225 Difference]: With dead ends: 112 [2024-12-01 13:18:12,093 INFO L226 Difference]: Without dead ends: 112 [2024-12-01 13:18:12,093 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 [2024-12-01 13:18:12,094 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 5 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:12,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 294 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-12-01 13:18:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-12-01 13:18:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 67 states have (on average 1.7611940298507462) internal successors, (118), 111 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 118 transitions. [2024-12-01 13:18:12,099 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 118 transitions. Word has length 15 [2024-12-01 13:18:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:12,099 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 118 transitions. [2024-12-01 13:18:12,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 118 transitions. [2024-12-01 13:18:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-01 13:18:12,100 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:12,100 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:12,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 13:18:12,100 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:12,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:12,101 INFO L85 PathProgramCache]: Analyzing trace with hash 325572089, now seen corresponding path program 1 times [2024-12-01 13:18:12,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:12,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146049020] [2024-12-01 13:18:12,101 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:12,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:12,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:12,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146049020] [2024-12-01 13:18:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146049020] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:12,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 13:18:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633171120] [2024-12-01 13:18:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:12,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 13:18:12,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:12,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 13:18:12,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:12,182 INFO L87 Difference]: Start difference. First operand 112 states and 118 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:12,282 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2024-12-01 13:18:12,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:12,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-12-01 13:18:12,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:12,283 INFO L225 Difference]: With dead ends: 111 [2024-12-01 13:18:12,284 INFO L226 Difference]: Without dead ends: 111 [2024-12-01 13:18:12,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:12,284 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 2 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:12,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 378 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-01 13:18:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-12-01 13:18:12,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 67 states have (on average 1.7462686567164178) internal successors, (117), 110 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 117 transitions. [2024-12-01 13:18:12,289 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 117 transitions. Word has length 16 [2024-12-01 13:18:12,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:12,289 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 117 transitions. [2024-12-01 13:18:12,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,289 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 117 transitions. [2024-12-01 13:18:12,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-01 13:18:12,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:12,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:12,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 13:18:12,290 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:12,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash 325572090, now seen corresponding path program 1 times [2024-12-01 13:18:12,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:12,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031566134] [2024-12-01 13:18:12,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:12,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:12,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:12,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031566134] [2024-12-01 13:18:12,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031566134] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:12,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:12,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:18:12,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570066310] [2024-12-01 13:18:12,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:12,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:18:12,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:12,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:18:12,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:12,559 INFO L87 Difference]: Start difference. First operand 111 states and 117 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:12,741 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2024-12-01 13:18:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:12,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2024-12-01 13:18:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:12,742 INFO L225 Difference]: With dead ends: 110 [2024-12-01 13:18:12,742 INFO L226 Difference]: Without dead ends: 110 [2024-12-01 13:18:12,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:12,743 INFO L435 NwaCegarLoop]: 105 mSDtfsCounter, 6 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:12,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 354 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:12,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-12-01 13:18:12,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-12-01 13:18:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 109 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 116 transitions. [2024-12-01 13:18:12,747 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 116 transitions. Word has length 16 [2024-12-01 13:18:12,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:12,748 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 116 transitions. [2024-12-01 13:18:12,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 116 transitions. [2024-12-01 13:18:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 13:18:12,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:12,748 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] [2024-12-01 13:18:12,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 13:18:12,749 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:12,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:12,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1117688001, now seen corresponding path program 1 times [2024-12-01 13:18:12,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:12,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461754062] [2024-12-01 13:18:12,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:12,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:12,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:12,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461754062] [2024-12-01 13:18:12,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461754062] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:12,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:12,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:18:12,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571468601] [2024-12-01 13:18:12,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:12,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:18:12,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:12,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:18:12,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:12,885 INFO L87 Difference]: Start difference. First operand 110 states and 116 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:13,034 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2024-12-01 13:18:13,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:13,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-12-01 13:18:13,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:13,035 INFO L225 Difference]: With dead ends: 108 [2024-12-01 13:18:13,035 INFO L226 Difference]: Without dead ends: 108 [2024-12-01 13:18:13,035 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:13,036 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 114 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:13,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 220 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:13,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-12-01 13:18:13,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-12-01 13:18:13,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 107 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 114 transitions. [2024-12-01 13:18:13,039 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 114 transitions. Word has length 22 [2024-12-01 13:18:13,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:13,040 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 114 transitions. [2024-12-01 13:18:13,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 114 transitions. [2024-12-01 13:18:13,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 13:18:13,040 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:13,040 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] [2024-12-01 13:18:13,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 13:18:13,041 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:13,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:13,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1117688000, now seen corresponding path program 1 times [2024-12-01 13:18:13,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:13,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730433993] [2024-12-01 13:18:13,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:13,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:13,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:13,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:13,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730433993] [2024-12-01 13:18:13,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730433993] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:13,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:13,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:18:13,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839637411] [2024-12-01 13:18:13,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:13,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:18:13,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:13,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:18:13,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:13,246 INFO L87 Difference]: Start difference. First operand 108 states and 114 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:13,385 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2024-12-01 13:18:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:13,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-12-01 13:18:13,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:13,386 INFO L225 Difference]: With dead ends: 106 [2024-12-01 13:18:13,386 INFO L226 Difference]: Without dead ends: 106 [2024-12-01 13:18:13,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:18:13,387 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 112 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:13,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 251 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:13,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-12-01 13:18:13,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-12-01 13:18:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 67 states have (on average 1.671641791044776) internal successors, (112), 105 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2024-12-01 13:18:13,389 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 22 [2024-12-01 13:18:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:13,389 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2024-12-01 13:18:13,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,389 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2024-12-01 13:18:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 13:18:13,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:13,390 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] [2024-12-01 13:18:13,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-01 13:18:13,390 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:13,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1117683004, now seen corresponding path program 1 times [2024-12-01 13:18:13,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:13,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708404171] [2024-12-01 13:18:13,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:13,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:13,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708404171] [2024-12-01 13:18:13,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708404171] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:13,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:13,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:18:13,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461052614] [2024-12-01 13:18:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:13,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:18:13,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:13,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:18:13,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:13,470 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:13,622 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2024-12-01 13:18:13,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:13,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-12-01 13:18:13,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:13,623 INFO L225 Difference]: With dead ends: 103 [2024-12-01 13:18:13,623 INFO L226 Difference]: Without dead ends: 103 [2024-12-01 13:18:13,623 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:13,623 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:13,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 196 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:13,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-12-01 13:18:13,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-12-01 13:18:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 68 states have (on average 1.6176470588235294) internal successors, (110), 102 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 110 transitions. [2024-12-01 13:18:13,626 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 110 transitions. Word has length 22 [2024-12-01 13:18:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:13,626 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 110 transitions. [2024-12-01 13:18:13,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 110 transitions. [2024-12-01 13:18:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 13:18:13,627 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:13,627 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] [2024-12-01 13:18:13,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-01 13:18:13,627 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:13,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:13,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1117683003, now seen corresponding path program 1 times [2024-12-01 13:18:13,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:13,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861182223] [2024-12-01 13:18:13,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:13,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:13,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861182223] [2024-12-01 13:18:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861182223] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:13,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 13:18:13,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207243097] [2024-12-01 13:18:13,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 13:18:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:13,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 13:18:13,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:13,754 INFO L87 Difference]: Start difference. First operand 103 states and 110 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:13,900 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2024-12-01 13:18:13,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:13,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 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 [2024-12-01 13:18:13,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:13,901 INFO L225 Difference]: With dead ends: 98 [2024-12-01 13:18:13,901 INFO L226 Difference]: Without dead ends: 98 [2024-12-01 13:18:13,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-01 13:18:13,902 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 75 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:13,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 262 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:13,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-12-01 13:18:13,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-12-01 13:18:13,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 97 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2024-12-01 13:18:13,905 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 22 [2024-12-01 13:18:13,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:13,905 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2024-12-01 13:18:13,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:13,905 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2024-12-01 13:18:13,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-01 13:18:13,906 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:13,906 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:13,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-01 13:18:13,906 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:13,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:13,906 INFO L85 PathProgramCache]: Analyzing trace with hash -356344125, now seen corresponding path program 1 times [2024-12-01 13:18:13,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:13,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774830740] [2024-12-01 13:18:13,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:13,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:14,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:14,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774830740] [2024-12-01 13:18:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774830740] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:14,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:18:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619016337] [2024-12-01 13:18:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:14,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:18:14,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:14,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:18:14,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:14,075 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:14,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:14,301 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2024-12-01 13:18:14,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-01 13:18:14,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-01 13:18:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:14,302 INFO L225 Difference]: With dead ends: 96 [2024-12-01 13:18:14,302 INFO L226 Difference]: Without dead ends: 96 [2024-12-01 13:18:14,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:18:14,302 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 147 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:14,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 285 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-01 13:18:14,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2024-12-01 13:18:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 94 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:14,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2024-12-01 13:18:14,305 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 24 [2024-12-01 13:18:14,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:14,306 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2024-12-01 13:18:14,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:14,306 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2024-12-01 13:18:14,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-01 13:18:14,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:14,306 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:14,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-01 13:18:14,307 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:14,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:14,307 INFO L85 PathProgramCache]: Analyzing trace with hash -356344124, now seen corresponding path program 1 times [2024-12-01 13:18:14,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:14,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185377921] [2024-12-01 13:18:14,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:14,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:14,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185377921] [2024-12-01 13:18:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185377921] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:14,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:14,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-01 13:18:14,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494056287] [2024-12-01 13:18:14,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:14,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-01 13:18:14,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:14,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-01 13:18:14,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-12-01 13:18:14,711 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:15,024 INFO L93 Difference]: Finished difference Result 132 states and 143 transitions. [2024-12-01 13:18:15,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 13:18:15,024 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-12-01 13:18:15,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:15,025 INFO L225 Difference]: With dead ends: 132 [2024-12-01 13:18:15,025 INFO L226 Difference]: Without dead ends: 132 [2024-12-01 13:18:15,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-12-01 13:18:15,026 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 228 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:15,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 349 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:15,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-12-01 13:18:15,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 119. [2024-12-01 13:18:15,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 118 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2024-12-01 13:18:15,029 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 24 [2024-12-01 13:18:15,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:15,029 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2024-12-01 13:18:15,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2024-12-01 13:18:15,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-01 13:18:15,030 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:15,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:15,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 13:18:15,030 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr62ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:15,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1987202653, now seen corresponding path program 1 times [2024-12-01 13:18:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250980167] [2024-12-01 13:18:15,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:15,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250980167] [2024-12-01 13:18:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250980167] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:15,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:15,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:18:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513829901] [2024-12-01 13:18:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:15,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:18:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:15,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:18:15,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:15,107 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:15,169 INFO L93 Difference]: Finished difference Result 118 states and 141 transitions. [2024-12-01 13:18:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 13:18:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-12-01 13:18:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:15,171 INFO L225 Difference]: With dead ends: 118 [2024-12-01 13:18:15,171 INFO L226 Difference]: Without dead ends: 118 [2024-12-01 13:18:15,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:15,171 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 70 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:15,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 299 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-12-01 13:18:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-12-01 13:18:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 93 states have (on average 1.5161290322580645) internal successors, (141), 117 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 141 transitions. [2024-12-01 13:18:15,174 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 141 transitions. Word has length 25 [2024-12-01 13:18:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:15,174 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 141 transitions. [2024-12-01 13:18:15,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,175 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 141 transitions. [2024-12-01 13:18:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-01 13:18:15,175 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:15,175 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:15,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-01 13:18:15,176 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:15,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1561275071, now seen corresponding path program 1 times [2024-12-01 13:18:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642601017] [2024-12-01 13:18:15,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:15,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:15,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642601017] [2024-12-01 13:18:15,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642601017] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:15,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:15,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-01 13:18:15,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660877902] [2024-12-01 13:18:15,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:15,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:18:15,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:15,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:18:15,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:18:15,290 INFO L87 Difference]: Start difference. First operand 118 states and 141 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:15,492 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2024-12-01 13:18:15,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:18:15,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-12-01 13:18:15,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:15,493 INFO L225 Difference]: With dead ends: 126 [2024-12-01 13:18:15,493 INFO L226 Difference]: Without dead ends: 126 [2024-12-01 13:18:15,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:15,494 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 57 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:15,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 304 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:15,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-12-01 13:18:15,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2024-12-01 13:18:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.510204081632653) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2024-12-01 13:18:15,497 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 27 [2024-12-01 13:18:15,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:15,497 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2024-12-01 13:18:15,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:15,497 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2024-12-01 13:18:15,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-12-01 13:18:15,498 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:15,498 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:15,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-01 13:18:15,498 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:15,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1561275070, now seen corresponding path program 1 times [2024-12-01 13:18:15,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:15,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230437058] [2024-12-01 13:18:15,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:15,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:15,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230437058] [2024-12-01 13:18:15,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230437058] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:15,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:15,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-12-01 13:18:15,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935548322] [2024-12-01 13:18:15,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:15,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 13:18:15,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:15,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 13:18:15,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-01 13:18:15,877 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:16,105 INFO L93 Difference]: Finished difference Result 125 states and 149 transitions. [2024-12-01 13:18:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 13:18:16,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2024-12-01 13:18:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:16,106 INFO L225 Difference]: With dead ends: 125 [2024-12-01 13:18:16,106 INFO L226 Difference]: Without dead ends: 125 [2024-12-01 13:18:16,106 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:18:16,107 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 59 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:16,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 307 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:16,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-01 13:18:16,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2024-12-01 13:18:16,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.5) internal successors, (147), 122 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2024-12-01 13:18:16,109 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 27 [2024-12-01 13:18:16,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:16,109 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2024-12-01 13:18:16,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 12 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,109 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2024-12-01 13:18:16,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-12-01 13:18:16,110 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:16,110 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:16,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 13:18:16,110 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:16,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:16,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1074755007, now seen corresponding path program 1 times [2024-12-01 13:18:16,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:16,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794658630] [2024-12-01 13:18:16,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:16,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:16,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:16,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794658630] [2024-12-01 13:18:16,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794658630] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:16,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:16,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:18:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562738762] [2024-12-01 13:18:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:16,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 13:18:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:16,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 13:18:16,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:18:16,237 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:16,322 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2024-12-01 13:18:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 13:18:16,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2024-12-01 13:18:16,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:16,323 INFO L225 Difference]: With dead ends: 124 [2024-12-01 13:18:16,323 INFO L226 Difference]: Without dead ends: 124 [2024-12-01 13:18:16,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:16,324 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 60 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:16,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 489 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:16,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-12-01 13:18:16,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-12-01 13:18:16,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 98 states have (on average 1.489795918367347) internal successors, (146), 122 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 146 transitions. [2024-12-01 13:18:16,327 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 146 transitions. Word has length 28 [2024-12-01 13:18:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:16,328 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 146 transitions. [2024-12-01 13:18:16,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 146 transitions. [2024-12-01 13:18:16,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-01 13:18:16,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:16,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:16,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 13:18:16,329 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:16,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -275714798, now seen corresponding path program 1 times [2024-12-01 13:18:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261224758] [2024-12-01 13:18:16,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:16,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:16,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:16,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261224758] [2024-12-01 13:18:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261224758] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:16,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 13:18:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462522147] [2024-12-01 13:18:16,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:16,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 13:18:16,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:16,392 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 13:18:16,392 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 13:18:16,392 INFO L87 Difference]: Start difference. First operand 123 states and 146 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:16,491 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2024-12-01 13:18:16,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 13:18:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-01 13:18:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:16,492 INFO L225 Difference]: With dead ends: 123 [2024-12-01 13:18:16,492 INFO L226 Difference]: Without dead ends: 123 [2024-12-01 13:18:16,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 13:18:16,492 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 46 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:16,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 124 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-12-01 13:18:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2024-12-01 13:18:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.44) internal successors, (144), 121 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 144 transitions. [2024-12-01 13:18:16,496 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 144 transitions. Word has length 30 [2024-12-01 13:18:16,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:16,496 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 144 transitions. [2024-12-01 13:18:16,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:16,497 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 144 transitions. [2024-12-01 13:18:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-01 13:18:16,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:16,497 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:16,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-01 13:18:16,497 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:16,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:16,498 INFO L85 PathProgramCache]: Analyzing trace with hash -275714797, now seen corresponding path program 1 times [2024-12-01 13:18:16,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:16,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339438002] [2024-12-01 13:18:16,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:16,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:16,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:16,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:16,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339438002] [2024-12-01 13:18:16,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339438002] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:16,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:16,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-01 13:18:16,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854157340] [2024-12-01 13:18:16,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:16,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-01 13:18:16,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:16,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-01 13:18:16,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-01 13:18:16,861 INFO L87 Difference]: Start difference. First operand 122 states and 144 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:17,326 INFO L93 Difference]: Finished difference Result 138 states and 152 transitions. [2024-12-01 13:18:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 13:18:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-01 13:18:17,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:17,328 INFO L225 Difference]: With dead ends: 138 [2024-12-01 13:18:17,328 INFO L226 Difference]: Without dead ends: 138 [2024-12-01 13:18:17,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-12-01 13:18:17,330 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 219 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:17,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 540 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:18:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-12-01 13:18:17,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2024-12-01 13:18:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 126 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2024-12-01 13:18:17,334 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 30 [2024-12-01 13:18:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:17,334 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2024-12-01 13:18:17,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2024-12-01 13:18:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-12-01 13:18:17,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:17,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:17,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-01 13:18:17,335 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:17,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1744651668, now seen corresponding path program 1 times [2024-12-01 13:18:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:17,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143606113] [2024-12-01 13:18:17,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:17,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:17,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143606113] [2024-12-01 13:18:17,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143606113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:17,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:17,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:18:17,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507369098] [2024-12-01 13:18:17,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:17,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:18:17,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:17,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:18:17,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:17,530 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:17,625 INFO L93 Difference]: Finished difference Result 130 states and 153 transitions. [2024-12-01 13:18:17,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:18:17,626 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-12-01 13:18:17,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:17,626 INFO L225 Difference]: With dead ends: 130 [2024-12-01 13:18:17,626 INFO L226 Difference]: Without dead ends: 130 [2024-12-01 13:18:17,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-01 13:18:17,627 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 55 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:17,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 541 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:17,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-12-01 13:18:17,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2024-12-01 13:18:17,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 129 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2024-12-01 13:18:17,631 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 30 [2024-12-01 13:18:17,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:17,631 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2024-12-01 13:18:17,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:17,631 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2024-12-01 13:18:17,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 13:18:17,631 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:17,631 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:17,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-01 13:18:17,632 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:17,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:17,632 INFO L85 PathProgramCache]: Analyzing trace with hash 42709327, now seen corresponding path program 1 times [2024-12-01 13:18:17,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:17,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877701124] [2024-12-01 13:18:17,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:17,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:18,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:18,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877701124] [2024-12-01 13:18:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877701124] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:18,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-12-01 13:18:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585184654] [2024-12-01 13:18:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:18,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-01 13:18:18,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:18,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-01 13:18:18,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2024-12-01 13:18:18,769 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:19,723 INFO L93 Difference]: Finished difference Result 164 states and 192 transitions. [2024-12-01 13:18:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-01 13:18:19,723 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-12-01 13:18:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:19,724 INFO L225 Difference]: With dead ends: 164 [2024-12-01 13:18:19,724 INFO L226 Difference]: Without dead ends: 164 [2024-12-01 13:18:19,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=978, Unknown=0, NotChecked=0, Total=1122 [2024-12-01 13:18:19,725 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:19,725 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 935 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 13:18:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-12-01 13:18:19,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 140. [2024-12-01 13:18:19,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 118 states have (on average 1.3898305084745763) internal successors, (164), 139 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2024-12-01 13:18:19,729 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 31 [2024-12-01 13:18:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:19,729 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2024-12-01 13:18:19,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 21 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2024-12-01 13:18:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 13:18:19,729 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:19,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:19,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-12-01 13:18:19,730 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:19,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1750373348, now seen corresponding path program 1 times [2024-12-01 13:18:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:19,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722648519] [2024-12-01 13:18:19,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:19,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:19,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:19,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:19,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722648519] [2024-12-01 13:18:19,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722648519] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:19,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:19,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-01 13:18:19,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599747581] [2024-12-01 13:18:19,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:19,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 13:18:19,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:19,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 13:18:19,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 13:18:19,957 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:20,084 INFO L93 Difference]: Finished difference Result 141 states and 165 transitions. [2024-12-01 13:18:20,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 13:18:20,084 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2024-12-01 13:18:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:20,084 INFO L225 Difference]: With dead ends: 141 [2024-12-01 13:18:20,085 INFO L226 Difference]: Without dead ends: 141 [2024-12-01 13:18:20,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-01 13:18:20,085 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 56 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:20,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 490 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:20,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-12-01 13:18:20,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-12-01 13:18:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 140 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 165 transitions. [2024-12-01 13:18:20,089 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 165 transitions. Word has length 31 [2024-12-01 13:18:20,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:20,089 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 165 transitions. [2024-12-01 13:18:20,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.875) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,089 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 165 transitions. [2024-12-01 13:18:20,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-12-01 13:18:20,090 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:20,090 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:20,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-01 13:18:20,090 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:20,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:20,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1573000850, now seen corresponding path program 1 times [2024-12-01 13:18:20,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:20,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356271387] [2024-12-01 13:18:20,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:20,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:20,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:20,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:20,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356271387] [2024-12-01 13:18:20,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356271387] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:20,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:20,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 13:18:20,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445443528] [2024-12-01 13:18:20,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:20,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 13:18:20,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:20,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 13:18:20,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 13:18:20,167 INFO L87 Difference]: Start difference. First operand 141 states and 165 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:20,259 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2024-12-01 13:18:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 13:18:20,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2024-12-01 13:18:20,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:20,260 INFO L225 Difference]: With dead ends: 140 [2024-12-01 13:18:20,260 INFO L226 Difference]: Without dead ends: 140 [2024-12-01 13:18:20,260 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-01 13:18:20,261 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 5 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:20,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 346 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:20,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-12-01 13:18:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-12-01 13:18:20,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 139 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2024-12-01 13:18:20,265 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 32 [2024-12-01 13:18:20,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:20,265 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2024-12-01 13:18:20,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:20,265 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2024-12-01 13:18:20,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-01 13:18:20,265 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:20,265 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:20,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-12-01 13:18:20,266 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:20,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1518385910, now seen corresponding path program 1 times [2024-12-01 13:18:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091454485] [2024-12-01 13:18:20,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091454485] [2024-12-01 13:18:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091454485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:20,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231406812] [2024-12-01 13:18:20,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:20,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:20,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:20,543 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:20,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 13:18:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:20,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-12-01 13:18:20,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:20,715 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 10 treesize of output 8 [2024-12-01 13:18:20,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:20,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-12-01 13:18:20,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-12-01 13:18:20,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-01 13:18:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:20,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:20,961 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 6 treesize of output 4 [2024-12-01 13:18:20,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231406812] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:20,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:20,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 15 [2024-12-01 13:18:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593165660] [2024-12-01 13:18:21,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:21,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-01 13:18:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:21,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-01 13:18:21,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-01 13:18:21,000 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:21,235 INFO L93 Difference]: Finished difference Result 142 states and 166 transitions. [2024-12-01 13:18:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 13:18:21,235 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-12-01 13:18:21,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:21,236 INFO L225 Difference]: With dead ends: 142 [2024-12-01 13:18:21,236 INFO L226 Difference]: Without dead ends: 142 [2024-12-01 13:18:21,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-12-01 13:18:21,237 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 69 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:21,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 371 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 13:18:21,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-12-01 13:18:21,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-12-01 13:18:21,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 121 states have (on average 1.371900826446281) internal successors, (166), 141 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2024-12-01 13:18:21,240 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 33 [2024-12-01 13:18:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:21,240 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2024-12-01 13:18:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6) internal successors, (54), 16 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2024-12-01 13:18:21,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-12-01 13:18:21,241 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:21,241 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:21,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 13:18:21,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-01 13:18:21,442 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:21,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:21,442 INFO L85 PathProgramCache]: Analyzing trace with hash 947003805, now seen corresponding path program 1 times [2024-12-01 13:18:21,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:21,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815073922] [2024-12-01 13:18:21,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:21,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:22,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815073922] [2024-12-01 13:18:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815073922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:22,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-01 13:18:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194344595] [2024-12-01 13:18:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:22,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-01 13:18:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:22,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-01 13:18:22,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-12-01 13:18:22,018 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:22,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:22,481 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2024-12-01 13:18:22,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-01 13:18:22,481 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2024-12-01 13:18:22,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:22,482 INFO L225 Difference]: With dead ends: 159 [2024-12-01 13:18:22,482 INFO L226 Difference]: Without dead ends: 159 [2024-12-01 13:18:22,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-12-01 13:18:22,482 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 270 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:22,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 322 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 13:18:22,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-12-01 13:18:22,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2024-12-01 13:18:22,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 126 states have (on average 1.373015873015873) internal successors, (173), 146 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2024-12-01 13:18:22,485 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 36 [2024-12-01 13:18:22,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:22,485 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2024-12-01 13:18:22,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2024-12-01 13:18:22,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 13:18:22,485 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:22,485 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:22,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-01 13:18:22,486 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:22,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash -707719552, now seen corresponding path program 1 times [2024-12-01 13:18:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380477240] [2024-12-01 13:18:22,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:22,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:22,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:23,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:23,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380477240] [2024-12-01 13:18:23,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380477240] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:23,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131120861] [2024-12-01 13:18:23,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:23,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:23,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:23,072 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:23,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 13:18:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:23,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 93 conjuncts are in the unsatisfiable core [2024-12-01 13:18:23,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:23,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:23,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:23,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:23,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:23,325 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:23,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:23,356 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:18:23,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2024-12-01 13:18:23,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2024-12-01 13:18:23,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-12-01 13:18:23,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 48 [2024-12-01 13:18:23,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 25 [2024-12-01 13:18:23,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2024-12-01 13:18:23,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 42 [2024-12-01 13:18:23,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 42 [2024-12-01 13:18:23,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 25 [2024-12-01 13:18:24,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 52 [2024-12-01 13:18:24,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:24,394 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 65 treesize of output 33 [2024-12-01 13:18:25,112 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:18:25,113 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2024-12-01 13:18:25,120 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:18:25,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-12-01 13:18:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:25,204 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 13:18:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131120861] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:25,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 13:18:25,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [22] total 47 [2024-12-01 13:18:25,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789432306] [2024-12-01 13:18:25,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:25,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-01 13:18:25,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:25,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-01 13:18:25,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2014, Unknown=0, NotChecked=0, Total=2162 [2024-12-01 13:18:25,205 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:27,564 INFO L93 Difference]: Finished difference Result 162 states and 188 transitions. [2024-12-01 13:18:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-01 13:18:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-01 13:18:27,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:27,565 INFO L225 Difference]: With dead ends: 162 [2024-12-01 13:18:27,565 INFO L226 Difference]: Without dead ends: 162 [2024-12-01 13:18:27,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 922 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=356, Invalid=4200, Unknown=0, NotChecked=0, Total=4556 [2024-12-01 13:18:27,566 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 70 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:27,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 794 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 13:18:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-12-01 13:18:27,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2024-12-01 13:18:27,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 134 states have (on average 1.3507462686567164) internal successors, (181), 154 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 181 transitions. [2024-12-01 13:18:27,569 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 181 transitions. Word has length 37 [2024-12-01 13:18:27,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:27,569 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 181 transitions. [2024-12-01 13:18:27,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,569 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 181 transitions. [2024-12-01 13:18:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 13:18:27,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:27,570 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:27,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 13:18:27,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-01 13:18:27,770 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:27,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:27,771 INFO L85 PathProgramCache]: Analyzing trace with hash -705806016, now seen corresponding path program 1 times [2024-12-01 13:18:27,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:27,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960669950] [2024-12-01 13:18:27,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960669950] [2024-12-01 13:18:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960669950] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:27,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:18:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343208315] [2024-12-01 13:18:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:27,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:18:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:27,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:18:27,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:18:27,806 INFO L87 Difference]: Start difference. First operand 155 states and 181 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:27,853 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2024-12-01 13:18:27,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:18:27,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-01 13:18:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:27,854 INFO L225 Difference]: With dead ends: 154 [2024-12-01 13:18:27,854 INFO L226 Difference]: Without dead ends: 154 [2024-12-01 13:18:27,854 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 [2024-12-01 13:18:27,855 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 13 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:27,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 123 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 13:18:27,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-12-01 13:18:27,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-12-01 13:18:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 134 states have (on average 1.3134328358208955) internal successors, (176), 152 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 176 transitions. [2024-12-01 13:18:27,857 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 176 transitions. Word has length 37 [2024-12-01 13:18:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:27,857 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 176 transitions. [2024-12-01 13:18:27,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 176 transitions. [2024-12-01 13:18:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 13:18:27,857 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:27,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:27,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-12-01 13:18:27,858 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:27,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash -705806015, now seen corresponding path program 1 times [2024-12-01 13:18:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:27,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333845606] [2024-12-01 13:18:27,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:27,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:27,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:27,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333845606] [2024-12-01 13:18:27,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333845606] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 13:18:27,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 13:18:27,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 13:18:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629427492] [2024-12-01 13:18:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 13:18:27,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 13:18:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:27,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 13:18:27,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 13:18:27,923 INFO L87 Difference]: Start difference. First operand 153 states and 176 transitions. Second operand has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:27,980 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2024-12-01 13:18:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 13:18:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-12-01 13:18:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:27,981 INFO L225 Difference]: With dead ends: 152 [2024-12-01 13:18:27,981 INFO L226 Difference]: Without dead ends: 152 [2024-12-01 13:18:27,982 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 [2024-12-01 13:18:27,982 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 13 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:27,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 120 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 13:18:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-12-01 13:18:27,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2024-12-01 13:18:27,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 150 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2024-12-01 13:18:27,985 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 37 [2024-12-01 13:18:27,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:27,985 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2024-12-01 13:18:27,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.5) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:27,986 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2024-12-01 13:18:27,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-01 13:18:27,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:27,986 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-12-01 13:18:27,986 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:27,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash -930115909, now seen corresponding path program 1 times [2024-12-01 13:18:27,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:27,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981592288] [2024-12-01 13:18:27,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:27,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:28,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981592288] [2024-12-01 13:18:28,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981592288] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:28,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725380235] [2024-12-01 13:18:28,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:28,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:28,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:28,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 13:18:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:29,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-12-01 13:18:29,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:29,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:29,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:29,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:29,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:18:29,120 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:29,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:29,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2024-12-01 13:18:29,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:18:29,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:18:29,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:29,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-12-01 13:18:29,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 30 [2024-12-01 13:18:29,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 30 [2024-12-01 13:18:30,295 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 [2024-12-01 13:18:30,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:30,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2024-12-01 13:18:30,432 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:30,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 29 [2024-12-01 13:18:30,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-12-01 13:18:30,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:30,582 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 30 treesize of output 12 [2024-12-01 13:18:30,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:30,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:31,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:31,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 53 [2024-12-01 13:18:31,410 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:31,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 44 [2024-12-01 13:18:31,430 INFO L349 Elim1Store]: treesize reduction 13, result has 71.7 percent of original size [2024-12-01 13:18:31,431 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 75 treesize of output 89 [2024-12-01 13:18:31,436 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 48 treesize of output 46 [2024-12-01 13:18:31,499 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:31,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2024-12-01 13:18:31,502 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:18:31,516 INFO L349 Elim1Store]: treesize reduction 42, result has 8.7 percent of original size [2024-12-01 13:18:31,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 22 [2024-12-01 13:18:31,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:31,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725380235] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:31,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:31,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 24] total 63 [2024-12-01 13:18:31,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175829287] [2024-12-01 13:18:31,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:31,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-12-01 13:18:31,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:31,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-12-01 13:18:31,882 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3761, Unknown=9, NotChecked=0, Total=4032 [2024-12-01 13:18:31,882 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand has 64 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 64 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:33,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:33,457 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2024-12-01 13:18:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-01 13:18:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 64 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-01 13:18:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:33,458 INFO L225 Difference]: With dead ends: 176 [2024-12-01 13:18:33,458 INFO L226 Difference]: Without dead ends: 176 [2024-12-01 13:18:33,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=422, Invalid=5269, Unknown=9, NotChecked=0, Total=5700 [2024-12-01 13:18:33,460 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 81 mSDsluCounter, 1419 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:33,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1476 Invalid, 1614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-01 13:18:33,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-12-01 13:18:33,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2024-12-01 13:18:33,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 152 states have (on average 1.256578947368421) internal successors, (191), 168 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:33,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 191 transitions. [2024-12-01 13:18:33,466 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 191 transitions. Word has length 38 [2024-12-01 13:18:33,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:33,466 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 191 transitions. [2024-12-01 13:18:33,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.5396825396825398) internal successors, (97), 64 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:33,467 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 191 transitions. [2024-12-01 13:18:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-01 13:18:33,467 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:33,467 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:33,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 13:18:33,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-01 13:18:33,668 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:33,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash -930115908, now seen corresponding path program 1 times [2024-12-01 13:18:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546256334] [2024-12-01 13:18:33,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:33,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:34,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:34,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546256334] [2024-12-01 13:18:34,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546256334] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:34,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795427105] [2024-12-01 13:18:34,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:34,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:34,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:34,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 13:18:34,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:34,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-12-01 13:18:34,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:34,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:34,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:34,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:18:34,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:34,853 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:34,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:34,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:18:34,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2024-12-01 13:18:35,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:18:35,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-12-01 13:18:35,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:35,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2024-12-01 13:18:35,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:35,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-12-01 13:18:35,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2024-12-01 13:18:35,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 34 [2024-12-01 13:18:35,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2024-12-01 13:18:35,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 34 [2024-12-01 13:18:36,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:36,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 22 [2024-12-01 13:18:36,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-12-01 13:18:36,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 34 [2024-12-01 13:18:36,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 36 [2024-12-01 13:18:36,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2024-12-01 13:18:36,672 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:36,672 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 39 treesize of output 17 [2024-12-01 13:18:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:36,713 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:37,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:37,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 65 [2024-12-01 13:18:38,028 INFO L349 Elim1Store]: treesize reduction 17, result has 64.6 percent of original size [2024-12-01 13:18:38,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 59 [2024-12-01 13:18:38,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:38,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 85 [2024-12-01 13:18:38,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-12-01 13:18:38,082 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:38,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2024-12-01 13:18:38,084 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:18:38,091 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-12-01 13:18:38,091 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 18 [2024-12-01 13:18:38,110 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:38,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 39 [2024-12-01 13:18:38,113 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:18:38,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-12-01 13:18:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795427105] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:38,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:38,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 67 [2024-12-01 13:18:38,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357788795] [2024-12-01 13:18:38,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:38,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-01 13:18:38,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:38,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-01 13:18:38,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=4273, Unknown=18, NotChecked=0, Total=4556 [2024-12-01 13:18:38,649 INFO L87 Difference]: Start difference. First operand 169 states and 191 transitions. Second operand has 68 states, 67 states have (on average 1.626865671641791) internal successors, (109), 68 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:41,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:41,046 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2024-12-01 13:18:41,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-01 13:18:41,046 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 1.626865671641791) internal successors, (109), 68 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-12-01 13:18:41,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:41,047 INFO L225 Difference]: With dead ends: 175 [2024-12-01 13:18:41,047 INFO L226 Difference]: Without dead ends: 175 [2024-12-01 13:18:41,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1636 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=496, Invalid=6968, Unknown=18, NotChecked=0, Total=7482 [2024-12-01 13:18:41,049 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 98 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 1711 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:41,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1514 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1711 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-01 13:18:41,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-12-01 13:18:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 169. [2024-12-01 13:18:41,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 152 states have (on average 1.25) internal successors, (190), 168 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:41,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 190 transitions. [2024-12-01 13:18:41,052 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 190 transitions. Word has length 38 [2024-12-01 13:18:41,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:41,053 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 190 transitions. [2024-12-01 13:18:41,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 1.626865671641791) internal successors, (109), 68 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:41,053 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 190 transitions. [2024-12-01 13:18:41,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-01 13:18:41,053 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:41,053 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:41,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 13:18:41,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-12-01 13:18:41,254 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:41,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1311309831, now seen corresponding path program 1 times [2024-12-01 13:18:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624805188] [2024-12-01 13:18:41,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:41,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:41,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624805188] [2024-12-01 13:18:41,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624805188] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305606401] [2024-12-01 13:18:41,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:41,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:41,975 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:41,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 13:18:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:42,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-12-01 13:18:42,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:42,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:42,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:42,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:18:42,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:42,224 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:42,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:42,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-12-01 13:18:42,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-01 13:18:42,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:18:42,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:42,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2024-12-01 13:18:42,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2024-12-01 13:18:42,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2024-12-01 13:18:43,429 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:43,429 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 22 treesize of output 18 [2024-12-01 13:18:43,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:43,560 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:43,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 44 treesize of output 60 [2024-12-01 13:18:43,657 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2024-12-01 13:18:43,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 64 treesize of output 63 [2024-12-01 13:18:43,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:43,895 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 3 case distinctions, treesize of input 53 treesize of output 45 [2024-12-01 13:18:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:44,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:45,179 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:45,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 40 [2024-12-01 13:18:45,197 INFO L349 Elim1Store]: treesize reduction 13, result has 71.7 percent of original size [2024-12-01 13:18:45,198 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 67 treesize of output 81 [2024-12-01 13:18:45,203 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 40 treesize of output 38 [2024-12-01 13:18:45,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2024-12-01 13:18:45,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2024-12-01 13:18:45,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-01 13:18:45,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2024-12-01 13:18:45,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-01 13:18:46,003 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 118 treesize of output 114 [2024-12-01 13:18:46,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:46,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305606401] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:46,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:46,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 27] total 74 [2024-12-01 13:18:46,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302169328] [2024-12-01 13:18:46,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:46,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-01 13:18:46,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:46,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-01 13:18:46,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=5109, Unknown=14, NotChecked=0, Total=5402 [2024-12-01 13:18:46,104 INFO L87 Difference]: Start difference. First operand 169 states and 190 transitions. Second operand has 74 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:48,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:48,310 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2024-12-01 13:18:48,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-01 13:18:48,310 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-01 13:18:48,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:48,312 INFO L225 Difference]: With dead ends: 174 [2024-12-01 13:18:48,312 INFO L226 Difference]: Without dead ends: 174 [2024-12-01 13:18:48,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=541, Invalid=8187, Unknown=14, NotChecked=0, Total=8742 [2024-12-01 13:18:48,313 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 105 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 2302 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:48,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 2302 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-01 13:18:48,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-12-01 13:18:48,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 169. [2024-12-01 13:18:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 152 states have (on average 1.243421052631579) internal successors, (189), 168 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2024-12-01 13:18:48,315 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 39 [2024-12-01 13:18:48,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:48,316 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2024-12-01 13:18:48,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.4324324324324325) internal successors, (106), 74 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:48,316 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2024-12-01 13:18:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-01 13:18:48,316 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:48,316 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:48,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 13:18:48,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-01 13:18:48,517 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:48,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2046088882, now seen corresponding path program 1 times [2024-12-01 13:18:48,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:48,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506518771] [2024-12-01 13:18:48,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:48,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:49,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506518771] [2024-12-01 13:18:49,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506518771] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:49,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725850107] [2024-12-01 13:18:49,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:49,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:49,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:49,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:49,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 13:18:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:49,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-01 13:18:49,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:49,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:49,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:49,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:49,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:18:49,388 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:49,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:49,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2024-12-01 13:18:49,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:18:49,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 1 [2024-12-01 13:18:49,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:49,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 21 [2024-12-01 13:18:49,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2024-12-01 13:18:49,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 21 [2024-12-01 13:18:50,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2024-12-01 13:18:50,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-12-01 13:18:50,236 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:50,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 23 [2024-12-01 13:18:50,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:50,413 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 37 treesize of output 13 [2024-12-01 13:18:50,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:50,453 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:51,367 INFO L349 Elim1Store]: treesize reduction 17, result has 64.6 percent of original size [2024-12-01 13:18:51,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 51 [2024-12-01 13:18:51,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:51,376 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 66 treesize of output 69 [2024-12-01 13:18:51,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:51,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725850107] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:51,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:51,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 27] total 71 [2024-12-01 13:18:51,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395768330] [2024-12-01 13:18:51,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:51,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-01 13:18:51,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:51,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-01 13:18:51,848 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=4783, Unknown=14, NotChecked=0, Total=5112 [2024-12-01 13:18:51,848 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand has 72 states, 71 states have (on average 1.591549295774648) internal successors, (113), 72 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:53,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:53,446 INFO L93 Difference]: Finished difference Result 176 states and 196 transitions. [2024-12-01 13:18:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-01 13:18:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 1.591549295774648) internal successors, (113), 72 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-12-01 13:18:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:53,447 INFO L225 Difference]: With dead ends: 176 [2024-12-01 13:18:53,447 INFO L226 Difference]: Without dead ends: 176 [2024-12-01 13:18:53,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2008 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=615, Invalid=7743, Unknown=14, NotChecked=0, Total=8372 [2024-12-01 13:18:53,448 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 79 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:53,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2000 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-01 13:18:53,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-12-01 13:18:53,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 172. [2024-12-01 13:18:53,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 155 states have (on average 1.238709677419355) internal successors, (192), 171 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2024-12-01 13:18:53,450 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 41 [2024-12-01 13:18:53,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:53,451 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2024-12-01 13:18:53,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 1.591549295774648) internal successors, (113), 72 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2024-12-01 13:18:53,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-01 13:18:53,451 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:53,451 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:53,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 13:18:53,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:53,652 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:53,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:53,652 INFO L85 PathProgramCache]: Analyzing trace with hash -995753890, now seen corresponding path program 1 times [2024-12-01 13:18:53,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:53,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055348726] [2024-12-01 13:18:53,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:53,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:54,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:54,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:18:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055348726] [2024-12-01 13:18:54,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055348726] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:18:54,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487290901] [2024-12-01 13:18:54,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:18:54,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:18:54,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:18:54,410 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:18:54,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 13:18:54,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:18:54,570 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-01 13:18:54,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:18:54,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:18:54,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:18:54,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:18:54,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:18:54,664 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:18:54,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:18:54,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-12-01 13:18:54,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:18:55,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:18:55,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:55,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 34 [2024-12-01 13:18:55,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 30 [2024-12-01 13:18:55,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 30 [2024-12-01 13:18:55,982 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 [2024-12-01 13:18:56,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:18:56,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 16 [2024-12-01 13:18:56,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:56,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 31 [2024-12-01 13:18:56,298 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:18:56,298 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 32 treesize of output 12 [2024-12-01 13:18:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:56,309 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:18:57,031 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:18:57,031 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 39 [2024-12-01 13:18:57,054 INFO L349 Elim1Store]: treesize reduction 13, result has 71.7 percent of original size [2024-12-01 13:18:57,054 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 64 treesize of output 78 [2024-12-01 13:18:57,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-12-01 13:18:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:18:57,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487290901] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:18:57,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:18:57,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 24] total 62 [2024-12-01 13:18:57,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005063541] [2024-12-01 13:18:57,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:18:57,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-12-01 13:18:57,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:18:57,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-12-01 13:18:57,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=3624, Unknown=9, NotChecked=0, Total=3906 [2024-12-01 13:18:57,447 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand has 63 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 63 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:18:58,997 INFO L93 Difference]: Finished difference Result 177 states and 197 transitions. [2024-12-01 13:18:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-01 13:18:58,997 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 63 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-12-01 13:18:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:18:58,998 INFO L225 Difference]: With dead ends: 177 [2024-12-01 13:18:58,998 INFO L226 Difference]: Without dead ends: 177 [2024-12-01 13:18:58,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1475 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=473, Invalid=5524, Unknown=9, NotChecked=0, Total=6006 [2024-12-01 13:18:58,999 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 61 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 1557 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-01 13:18:58,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1667 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1557 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-01 13:18:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-12-01 13:18:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 173. [2024-12-01 13:18:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 156 states have (on average 1.2371794871794872) internal successors, (193), 172 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2024-12-01 13:18:59,001 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 42 [2024-12-01 13:18:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:18:59,001 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2024-12-01 13:18:59,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.6290322580645162) internal successors, (101), 63 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:18:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2024-12-01 13:18:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-01 13:18:59,002 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:18:59,002 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:18:59,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 13:18:59,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-12-01 13:18:59,202 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:18:59,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:18:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 858225412, now seen corresponding path program 2 times [2024-12-01 13:18:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:18:59,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377136200] [2024-12-01 13:18:59,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:18:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:18:59,224 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:18:59,224 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:00,025 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:00,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:19:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377136200] [2024-12-01 13:19:00,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377136200] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:19:00,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262078905] [2024-12-01 13:19:00,025 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:19:00,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:19:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:19:00,027 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:19:00,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 13:19:00,228 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:19:00,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:00,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-12-01 13:19:00,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:19:00,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:19:00,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:19:00,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:19:00,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:19:00,343 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2024-12-01 13:19:00,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2024-12-01 13:19:00,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-12-01 13:19:00,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-12-01 13:19:00,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:19:00,698 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2024-12-01 13:19:00,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 36 [2024-12-01 13:19:00,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2024-12-01 13:19:00,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 30 [2024-12-01 13:19:01,350 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 [2024-12-01 13:19:01,450 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-12-01 13:19:01,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 18 [2024-12-01 13:19:01,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:01,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2024-12-01 13:19:01,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:19:01,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-01 13:19:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:01,716 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:19:01,785 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 6 treesize of output 4 [2024-12-01 13:19:02,385 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:19:02,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 40 [2024-12-01 13:19:02,407 INFO L349 Elim1Store]: treesize reduction 13, result has 71.7 percent of original size [2024-12-01 13:19:02,407 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 67 treesize of output 81 [2024-12-01 13:19:02,412 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 40 treesize of output 38 [2024-12-01 13:19:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:02,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262078905] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:19:02,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:19:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 26] total 65 [2024-12-01 13:19:02,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379323862] [2024-12-01 13:19:02,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:19:02,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-12-01 13:19:02,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:19:02,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-12-01 13:19:02,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=4003, Unknown=12, NotChecked=0, Total=4290 [2024-12-01 13:19:02,784 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand has 66 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 66 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:19:04,402 INFO L93 Difference]: Finished difference Result 179 states and 199 transitions. [2024-12-01 13:19:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-01 13:19:04,403 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 66 states have internal predecessors, (103), 0 states have call successors, (0), 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 44 [2024-12-01 13:19:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:19:04,403 INFO L225 Difference]: With dead ends: 179 [2024-12-01 13:19:04,403 INFO L226 Difference]: Without dead ends: 179 [2024-12-01 13:19:04,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=500, Invalid=6294, Unknown=12, NotChecked=0, Total=6806 [2024-12-01 13:19:04,404 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 122 mSDsluCounter, 1859 mSDsCounter, 0 mSdLazyCounter, 1761 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-01 13:19:04,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1918 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1761 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-01 13:19:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-01 13:19:04,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 163. [2024-12-01 13:19:04,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 146 states have (on average 1.2534246575342465) internal successors, (183), 162 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:04,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 183 transitions. [2024-12-01 13:19:04,406 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 183 transitions. Word has length 44 [2024-12-01 13:19:04,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:19:04,406 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 183 transitions. [2024-12-01 13:19:04,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 66 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:04,406 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 183 transitions. [2024-12-01 13:19:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 13:19:04,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:19:04,406 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:19:04,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 13:19:04,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-12-01 13:19:04,606 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:19:04,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:19:04,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1621359359, now seen corresponding path program 2 times [2024-12-01 13:19:04,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:19:04,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531026460] [2024-12-01 13:19:04,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:19:04,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:19:04,629 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:19:04,629 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:05,908 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:05,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:19:05,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531026460] [2024-12-01 13:19:05,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531026460] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:19:05,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425110557] [2024-12-01 13:19:05,909 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:19:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:19:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:19:05,910 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:19:05,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 13:19:06,126 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:19:06,126 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:06,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-12-01 13:19:06,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:19:06,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:19:06,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-12-01 13:19:06,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:19:06,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:19:06,166 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:19:06,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:19:06,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2024-12-01 13:19:06,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-01 13:19:06,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:19:06,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:06,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2024-12-01 13:19:06,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:06,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 50 [2024-12-01 13:19:06,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:19:06,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:06,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 15 [2024-12-01 13:19:06,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:06,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:06,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 53 [2024-12-01 13:19:07,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-12-01 13:19:07,785 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:07,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 53 [2024-12-01 13:19:08,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:08,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 19 [2024-12-01 13:19:08,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:08,459 INFO L349 Elim1Store]: treesize reduction 59, result has 16.9 percent of original size [2024-12-01 13:19:08,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 43 [2024-12-01 13:19:08,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:08,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 11 [2024-12-01 13:19:08,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 28 [2024-12-01 13:19:08,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:08,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:19:08,818 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 [2024-12-01 13:19:09,330 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 311 treesize of output 273 [2024-12-01 13:19:10,001 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:19:10,003 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 282 treesize of output 274 [2024-12-01 13:19:10,065 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:19:10,080 INFO L349 Elim1Store]: treesize reduction 60, result has 1.6 percent of original size [2024-12-01 13:19:10,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 7332 treesize of output 1 [2024-12-01 13:19:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:10,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425110557] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:19:10,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:19:10,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 30] total 74 [2024-12-01 13:19:10,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868785257] [2024-12-01 13:19:10,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:19:10,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-01 13:19:10,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:19:10,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-01 13:19:10,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=307, Invalid=5095, Unknown=0, NotChecked=0, Total=5402 [2024-12-01 13:19:10,648 INFO L87 Difference]: Start difference. First operand 163 states and 183 transitions. Second operand has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:19:12,684 INFO L93 Difference]: Finished difference Result 181 states and 201 transitions. [2024-12-01 13:19:12,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-01 13:19:12,684 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 0 states have call successors, (0), 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 49 [2024-12-01 13:19:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:19:12,685 INFO L225 Difference]: With dead ends: 181 [2024-12-01 13:19:12,685 INFO L226 Difference]: Without dead ends: 181 [2024-12-01 13:19:12,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2102 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=490, Invalid=7342, Unknown=0, NotChecked=0, Total=7832 [2024-12-01 13:19:12,686 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 86 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 1770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:19:12,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 2112 Invalid, 1770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1765 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-01 13:19:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-12-01 13:19:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 176. [2024-12-01 13:19:12,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 159 states have (on average 1.2327044025157232) internal successors, (196), 175 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2024-12-01 13:19:12,688 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 49 [2024-12-01 13:19:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:19:12,688 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2024-12-01 13:19:12,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 1.554054054054054) internal successors, (115), 74 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:19:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2024-12-01 13:19:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-01 13:19:12,689 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:19:12,689 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:19:12,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 13:19:12,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-12-01 13:19:12,889 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:19:12,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:19:12,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1357599361, now seen corresponding path program 2 times [2024-12-01 13:19:12,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:19:12,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325289965] [2024-12-01 13:19:12,890 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:19:12,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:19:12,913 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:19:12,913 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:19:14,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:19:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325289965] [2024-12-01 13:19:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325289965] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:19:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88653756] [2024-12-01 13:19:14,691 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 13:19:14,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:19:14,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:19:14,693 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:19:14,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 13:19:14,907 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 13:19:14,907 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 13:19:14,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-12-01 13:19:14,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:19:15,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-12-01 13:19:15,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:19:15,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-12-01 13:19:15,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 159 [2024-12-01 13:19:16,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-12-01 13:19:16,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:16,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 36 [2024-12-01 13:19:17,264 INFO L349 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2024-12-01 13:19:17,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2024-12-01 13:19:17,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:17,279 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 21 treesize of output 15 [2024-12-01 13:19:17,542 INFO L349 Elim1Store]: treesize reduction 29, result has 42.0 percent of original size [2024-12-01 13:19:17,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 42 [2024-12-01 13:19:17,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:17,557 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 21 treesize of output 15 [2024-12-01 13:19:19,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:19,515 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 29 [2024-12-01 13:19:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:19:19,843 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:19,843 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 44 treesize of output 60 [2024-12-01 13:19:20,163 INFO L349 Elim1Store]: treesize reduction 32, result has 54.9 percent of original size [2024-12-01 13:19:20,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 242 treesize of output 165 [2024-12-01 13:19:28,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:19:28,094 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 897 treesize of output 557 [2024-12-01 13:20:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:20:23,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:20:34,523 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-12-01 13:20:34,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 123 treesize of output 89 [2024-12-01 13:20:34,573 INFO L349 Elim1Store]: treesize reduction 13, result has 71.7 percent of original size [2024-12-01 13:20:34,574 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 170 treesize of output 176 [2024-12-01 13:20:34,581 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 101 treesize of output 97 [2024-12-01 13:20:49,858 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 68 treesize of output 62 [2024-12-01 13:20:49,863 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 456 treesize of output 444 [2024-12-01 13:20:50,190 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 103 treesize of output 95 [2024-12-01 13:20:50,195 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 347 treesize of output 339 [2024-12-01 13:20:50,444 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 121 treesize of output 111 [2024-12-01 13:20:50,450 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 406 treesize of output 396 [2024-12-01 13:20:50,873 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 74 treesize of output 68 [2024-12-01 13:20:50,879 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 504 treesize of output 492 [2024-12-01 13:20:51,281 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 105 treesize of output 97 [2024-12-01 13:20:51,288 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 729 treesize of output 713 [2024-12-01 13:20:51,912 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 106 treesize of output 98 [2024-12-01 13:20:51,917 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 359 treesize of output 351 [2024-12-01 13:20:53,185 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 75 treesize of output 69 [2024-12-01 13:20:53,189 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 509 treesize of output 497 [2024-12-01 13:20:53,370 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 115 treesize of output 105 [2024-12-01 13:20:53,376 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 742 treesize of output 724 [2024-12-01 13:20:53,413 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 84 treesize of output 76 [2024-12-01 13:20:53,418 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 260 treesize of output 252 [2024-12-01 13:20:53,449 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 99 treesize of output 91 [2024-12-01 13:20:53,455 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 332 treesize of output 324 [2024-12-01 13:20:54,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2024-12-01 13:20:54,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 44 [2024-12-01 13:22:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:22:28,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88653756] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:22:28,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:22:28,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32, 31] total 87 [2024-12-01 13:22:28,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751830954] [2024-12-01 13:22:28,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:22:28,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-12-01 13:22:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:22:28,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-12-01 13:22:28,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=7310, Unknown=53, NotChecked=0, Total=7656 [2024-12-01 13:22:28,923 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 88 states, 87 states have (on average 1.6551724137931034) internal successors, (144), 88 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:22:54,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:04,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:12,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:16,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:20,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:25,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:30,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:38,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:43,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:47,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:50,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:55,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:23:58,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:06,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:10,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:19,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:23,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:24:27,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:34,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:38,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:47,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:24:51,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:24:56,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:05,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:09,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:12,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:16,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:26,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:30,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:34,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:39,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:48,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:25:52,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:25:57,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:26:13,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:26:17,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:26:19,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:26:23,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:28,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:26:43,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:26:48,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:27:04,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:27:53,798 WARN L286 SmtUtils]: Spent 16.75s on a formula simplification. DAG size of input: 367 DAG size of output: 229 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-01 13:27:56,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:28:02,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:28:09,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:28:14,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:28:37,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:28:42,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:28:44,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:28:48,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:28:54,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:29:27,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-01 13:29:41,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:29:43,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:29:47,886 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse12 (= |c_ULTIMATE.start_destroy_sl_~sl#1.offset| 4)) (.cse0 (= |c_ULTIMATE.start_destroy_sl_~sl#1.offset| 0))) (let ((.cse3 (not .cse0)) (.cse5 (not .cse12)) (.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| 1))) (and (or (and (or (and (exists ((v_prenex_23 Int) (v_DerPreprocessor_17 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_prenex_24 Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| v_prenex_23) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| v_prenex_23 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_17) v_prenex_23 0) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_prenex_24) v_prenex_23 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0))) .cse0) (and (or (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_16 Int)) (let ((.cse2 (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_16) v_arrayElimCell_210 0))) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store (store .cse1 v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select .cse2 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store .cse1 v_arrayElimCell_210 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse2 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_15 Int) (v_prenex_21 Int)) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_prenex_21) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_15) v_arrayElimCell_210 0) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) .cse3) (and (exists ((v_DerPreprocessor_14 Int) (v_prenex_22 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (let ((.cse4 (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_14) v_prenex_22 0))) (and (= |c_#valid| (store (store .cse1 v_prenex_22 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store (store .cse1 v_prenex_22 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select .cse4 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_prenex_22 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_prenex_22) 0) (= 1 (select .cse4 |c_ULTIMATE.start_destroy_sl_~sl#1.base|))))) .cse0)) .cse5) (and .cse3 (or (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_13 Int)) (let ((.cse7 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse6 (store .cse7 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0))) (and (= (select .cse6 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= |c_#valid| .cse6) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse7 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_prenex_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) (and (or (exists ((v_prenex_5 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_14 Int)) (let ((.cse8 (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_prenex_5) v_arrayElimCell_210 1)) (.cse9 (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 1) v_prenex_14 0))) (and (= (select .cse8 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) v_prenex_5) (= (select .cse8 v_prenex_14) 0) (= (select .cse9 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= |c_#valid| (store .cse9 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0))))) (exists ((v_prenex_17 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_8 Int)) (let ((.cse11 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse10 (store .cse11 v_prenex_17 0))) (and (= (select .cse10 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= |c_#valid| (store .cse10 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse11 v_prenex_17 v_DerPreprocessor_8) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_prenex_17) 0)))))) .cse12) (and .cse5 (or (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_DerPreprocessor_18 Int)) (let ((.cse13 (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_18) v_prenex_16 0))) (and (= |c_#valid| (store (store .cse1 v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= v_DerPreprocessor_18 (select .cse13 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (= (select .cse13 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1)))) (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_211 Int)) (let ((.cse14 (store (store .cse1 v_arrayElimCell_211 (select |c_#valid| v_arrayElimCell_211)) v_prenex_16 0))) (and (= |c_#valid| (store .cse14 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (not (= v_prenex_16 v_arrayElimCell_211)) (= (select .cse1 v_arrayElimCell_211) 0) (= (select .cse14 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1)))) (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (and (= |c_#valid| (store (store .cse1 v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse1 v_prenex_16) 0))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_DerPreprocessor_19 Int) (v_prenex_20 Int)) (let ((.cse15 (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_19) v_prenex_20 0))) (and (= (select .cse15 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) v_DerPreprocessor_19) (= (select .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store .cse1 v_prenex_20 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse15 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1)))))) (and (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_13 Int) (v_arrayElimCell_211 Int)) (let ((.cse17 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse16 (store .cse17 v_arrayElimCell_211 0))) (and (= (select .cse16 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse17 v_arrayElimCell_211 v_prenex_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (= |c_#valid| (store .cse16 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) .cse5) (and (or (exists ((v_DerPreprocessor_13 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_arrayElimCell_211 Int)) (let ((.cse19 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse18 (store .cse19 v_arrayElimCell_211 0))) (and (= (select .cse18 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse19 v_arrayElimCell_211 v_DerPreprocessor_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (= |c_#valid| (store .cse18 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_21 Int)) (let ((.cse20 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse21 (store (store .cse20 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_21) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0))) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse20 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select .cse21 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store .cse20 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select .cse21 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (not (= v_arrayElimCell_210 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0) (not (= |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)))))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_arrayElimCell_211 Int)) (let ((.cse23 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse22 (store (store .cse23 v_arrayElimCell_211 (select |c_#valid| v_arrayElimCell_211)) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0))) (and (= |c_#valid| (store .cse22 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse22 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse23 v_arrayElimCell_211 (select .cse22 v_arrayElimCell_211)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (not (= v_arrayElimCell_210 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) (exists ((v_prenex_12 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_20 Int)) (let ((.cse24 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse25 (store (store .cse24 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_20) v_prenex_12 0))) (and (= |c_#valid| (store (store .cse24 v_prenex_12 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select .cse25 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (not (= v_prenex_12 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse24 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select .cse25 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))))) .cse5) (and .cse5 (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_211 Int)) (let ((.cse26 (store .cse1 v_arrayElimCell_211 0))) (and (= |c_#valid| (store .cse26 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_211) 0) (= (select .cse26 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1))))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (let ((.cse27 (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0))) (and (= (select .cse27 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| .cse27)))) (and .cse5 (or (exists ((v_prenex_18 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_1 Int)) (let ((.cse28 (store (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 1) |c_ULTIMATE.start_destroy_sl_~sl#1.base| 1) v_prenex_18 0))) (and (not (= v_prenex_18 v_arrayElimCell_210)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_DerPreprocessor_1) v_arrayElimCell_210 1) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 0) (= (select .cse28 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= |c_#valid| (store .cse28 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (exists ((v_prenex_15 Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_1 Int)) (let ((.cse29 (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 1))) (and (= (select (store (store .cse29 |c_ULTIMATE.start_destroy_sl_~sl#1.base| 1) v_prenex_15 0) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= |c_#valid| (store (store .cse29 v_prenex_15 0) |c_ULTIMATE.start_destroy_sl_~sl#1.base| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_DerPreprocessor_1) v_arrayElimCell_210 1) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))))))) (<= 0 |c_ULTIMATE.start_destroy_sl_~sl#1.offset|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 0) (= (select |c_#valid| |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 1) (= (store |c_#valid| |c_ULTIMATE.start_destroy_sl_~sl#1.base| 0) |c_ULTIMATE.start_main_old_#valid#1|) (or (and (or (and (exists ((v_DerPreprocessor_14 Int) (v_prenex_22 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (and (= |c_#valid| (store (store .cse1 v_prenex_22 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store (store .cse1 v_prenex_22 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_14) v_prenex_22 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_prenex_22 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_prenex_22) 0))) .cse0) (and .cse3 (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_16 Int)) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store (store .cse1 v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_16) v_arrayElimCell_210 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store .cse1 v_arrayElimCell_210 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) .cse5) (and .cse3 (or (and .cse5 (exists ((v_prenex_18 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_1 Int)) (and (not (= v_prenex_18 v_arrayElimCell_210)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_DerPreprocessor_1) v_arrayElimCell_210 1) |c_ULTIMATE.start_destroy_sl_~sl#1.base|) 0) (= |c_#valid| (store (store (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 1) |c_ULTIMATE.start_destroy_sl_~sl#1.base| 1) v_prenex_18 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (and .cse5 (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_211 Int)) (and (= |c_#valid| (store (store .cse1 v_arrayElimCell_211 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_211) 0)))) (and .cse5 (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_13 Int) (v_arrayElimCell_211 Int)) (let ((.cse30 (store .cse1 v_arrayElimCell_210 1))) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse30 v_arrayElimCell_211 v_prenex_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (= |c_#valid| (store (store .cse30 v_arrayElimCell_211 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_13 Int)) (let ((.cse31 (store .cse1 v_arrayElimCell_210 1))) (and (= |c_#valid| (store .cse31 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse31 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_prenex_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (and (or (exists ((v_DerPreprocessor_13 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_arrayElimCell_211 Int)) (let ((.cse32 (store .cse1 v_arrayElimCell_210 1))) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse32 v_arrayElimCell_211 v_DerPreprocessor_13) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (= |c_#valid| (store (store .cse32 v_arrayElimCell_211 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (exists ((v_prenex_12 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_20 Int)) (let ((.cse33 (store .cse1 v_arrayElimCell_210 1))) (and (= |c_#valid| (store (store .cse33 v_prenex_12 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= v_prenex_12 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse33 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select (store (store .cse33 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_20) v_prenex_12 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0)))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_arrayElimCell_211 Int)) (let ((.cse35 (store .cse1 v_arrayElimCell_210 1))) (let ((.cse34 (store (store .cse35 v_arrayElimCell_211 (select |c_#valid| v_arrayElimCell_211)) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0))) (and (= |c_#valid| (store .cse34 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse35 v_arrayElimCell_211 (select .cse34 v_arrayElimCell_211)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_arrayElimCell_211) 0) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (not (= v_arrayElimCell_210 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0))))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_21 Int)) (let ((.cse36 (store .cse1 v_arrayElimCell_210 1))) (and (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse36 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| (select (store (store .cse36 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_21) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0) (= |c_#valid| (store (store .cse36 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36| 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (not (= v_arrayElimCell_210 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0) (not (= |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_36|)))))) .cse5) (and .cse5 (or (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_DerPreprocessor_18 Int)) (and (= |c_#valid| (store (store .cse1 v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= v_DerPreprocessor_18 (select (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_18) v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0))) (exists ((|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_DerPreprocessor_19 Int) (v_prenex_20 Int)) (and (= (select (store (store .cse1 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| v_DerPreprocessor_19) v_prenex_20 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) v_DerPreprocessor_19) (= |c_#valid| (store (store .cse1 v_prenex_20 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|) 0))) (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_211 Int)) (and (= |c_#valid| (store (store (store .cse1 v_arrayElimCell_211 (select |c_#valid| v_arrayElimCell_211)) v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= v_arrayElimCell_211 |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37|)) (not (= v_prenex_16 v_arrayElimCell_211)) (= (select .cse1 v_arrayElimCell_211) 0))) (exists ((v_prenex_16 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int)) (and (= |c_#valid| (store (store .cse1 v_prenex_16 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_prenex_16) 0))))) (and (or (exists ((v_prenex_17 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_DerPreprocessor_8 Int)) (let ((.cse37 (store .cse1 v_arrayElimCell_210 1))) (and (= |c_#valid| (store (store .cse37 v_prenex_17 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)) (not (= |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_arrayElimCell_210)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210) 0) (= (select (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| (select (store .cse37 v_prenex_17 v_DerPreprocessor_8) |c_ULTIMATE.start_destroy_sl_~sl#1.base|)) v_arrayElimCell_210 1) v_prenex_17) 0)))) (exists ((v_prenex_5 Int) (|v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| Int) (v_arrayElimCell_210 Int) (v_prenex_14 Int)) (let ((.cse38 (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_destroy_sl_~sl#1.base| v_prenex_5) v_arrayElimCell_210 1))) (and (= (select .cse38 |c_ULTIMATE.start_destroy_sl_~sl#1.base|) v_prenex_5) (= (select .cse38 v_prenex_14) 0) (= |c_#valid| (store (store (store |c_ULTIMATE.start_main_old_#valid#1| v_arrayElimCell_210 1) v_prenex_14 0) |v_ULTIMATE.start_destroy_sl_~tmp~0#1.base_37| 0)))))) .cse12))))))) is different from false [2024-12-01 13:30:23,870 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, 1] [2024-12-01 13:30:28,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:30:32,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:30:36,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-12-01 13:30:41,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-01 13:30:45,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-01 13:30:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:30:46,455 INFO L93 Difference]: Finished difference Result 183 states and 202 transitions. [2024-12-01 13:30:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-01 13:30:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 1.6551724137931034) internal successors, (144), 88 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-01 13:30:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:30:46,457 INFO L225 Difference]: With dead ends: 183 [2024-12-01 13:30:46,457 INFO L226 Difference]: Without dead ends: 153 [2024-12-01 13:30:46,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2183 ImplicationChecksByTransitivity, 401.6s TimeCoverageRelationStatistics Valid=576, Invalid=12695, Unknown=73, NotChecked=228, Total=13572 [2024-12-01 13:30:46,460 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 88 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 3580 mSolverCounterSat, 6 mSolverCounterUnsat, 53 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 270.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2692 SdHoareTripleChecker+Invalid, 3723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3580 IncrementalHoareTripleChecker+Invalid, 53 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 272.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:30:46,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 2692 Invalid, 3723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3580 Invalid, 53 Unknown, 84 Unchecked, 272.6s Time] [2024-12-01 13:30:46,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-12-01 13:30:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2024-12-01 13:30:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 134 states have (on average 1.2686567164179106) internal successors, (170), 150 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:30:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 170 transitions. [2024-12-01 13:30:46,462 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 170 transitions. Word has length 50 [2024-12-01 13:30:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:30:46,462 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 170 transitions. [2024-12-01 13:30:46,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 1.6551724137931034) internal successors, (144), 88 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:30:46,462 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 170 transitions. [2024-12-01 13:30:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-01 13:30:46,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:30:46,463 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:30:46,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-01 13:30:46,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-12-01 13:30:46,663 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:30:46,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:30:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash 391603176, now seen corresponding path program 1 times [2024-12-01 13:30:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:30:46,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212533567] [2024-12-01 13:30:46,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:30:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:30:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:30:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:30:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:30:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212533567] [2024-12-01 13:30:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212533567] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:30:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639549182] [2024-12-01 13:30:50,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:30:50,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:30:50,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:30:50,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:30:50,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 13:30:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:30:50,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-12-01 13:30:50,301 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:30:50,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:30:50,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:30:50,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-01 13:30:50,401 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 8 treesize of output 1 [2024-12-01 13:30:52,181 INFO L349 Elim1Store]: treesize reduction 68, result has 31.3 percent of original size [2024-12-01 13:30:52,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 45 [2024-12-01 13:30:52,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2024-12-01 13:30:52,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:30:52,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2024-12-01 13:30:53,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 35 [2024-12-01 13:30:53,248 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 37 treesize of output 25 [2024-12-01 13:30:53,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-01 13:30:54,072 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:30:54,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:31:00,968 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:31:00,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:00,987 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 302 treesize of output 292 [2024-12-01 13:31:00,997 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 59 treesize of output 51 [2024-12-01 13:31:01,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-12-01 13:31:01,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:01,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 202 [2024-12-01 13:31:08,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:31:08,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639549182] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:31:08,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:31:08,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 22, 22] total 73 [2024-12-01 13:31:08,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289546757] [2024-12-01 13:31:08,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:31:08,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-12-01 13:31:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:31:08,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-12-01 13:31:08,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=5040, Unknown=24, NotChecked=0, Total=5402 [2024-12-01 13:31:08,587 INFO L87 Difference]: Start difference. First operand 151 states and 170 transitions. Second operand has 74 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:23,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:31:23,997 INFO L93 Difference]: Finished difference Result 363 states and 416 transitions. [2024-12-01 13:31:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-01 13:31:23,998 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-12-01 13:31:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:31:23,999 INFO L225 Difference]: With dead ends: 363 [2024-12-01 13:31:23,999 INFO L226 Difference]: Without dead ends: 363 [2024-12-01 13:31:23,999 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=1406, Invalid=12845, Unknown=29, NotChecked=0, Total=14280 [2024-12-01 13:31:24,000 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 1419 mSDsluCounter, 1937 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-12-01 13:31:24,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 1997 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2024-12-01 13:31:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-12-01 13:31:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 179. [2024-12-01 13:31:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 162 states have (on average 1.2654320987654322) internal successors, (205), 178 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 205 transitions. [2024-12-01 13:31:24,003 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 205 transitions. Word has length 55 [2024-12-01 13:31:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:31:24,003 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 205 transitions. [2024-12-01 13:31:24,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.1780821917808217) internal successors, (159), 74 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 205 transitions. [2024-12-01 13:31:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-01 13:31:24,004 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:31:24,004 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:31:24,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 13:31:24,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-12-01 13:31:24,204 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:31:24,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:31:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash 391603177, now seen corresponding path program 1 times [2024-12-01 13:31:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:31:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842574233] [2024-12-01 13:31:24,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:31:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:31:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:31:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:31:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:31:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842574233] [2024-12-01 13:31:28,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842574233] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:31:28,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368325485] [2024-12-01 13:31:28,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:31:28,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:31:28,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:31:28,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:31:28,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 13:31:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:31:28,818 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-12-01 13:31:28,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:31:28,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-12-01 13:31:28,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-01 13:31:28,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-01 13:31:31,264 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2024-12-01 13:31:31,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2024-12-01 13:31:31,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2024-12-01 13:31:31,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2024-12-01 13:31:31,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:31:31,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 27 [2024-12-01 13:31:31,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:31:31,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 21 [2024-12-01 13:31:32,579 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 13:31:32,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2024-12-01 13:31:32,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2024-12-01 13:31:32,797 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:32,797 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 30 treesize of output 16 [2024-12-01 13:31:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:31:33,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:31:34,716 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~sl~1#1.base|)) (.cse5 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~sl~1#1.base|))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~sl~1#1.offset| 4)) (.cse1 (select .cse5 |c_ULTIMATE.start_main_~sl~1#1.offset|)) (.cse2 (+ 4 (select .cse3 |c_ULTIMATE.start_main_~sl~1#1.offset|)))) (and (forall ((v_ArrVal_2496 Int) (v_ArrVal_2494 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_sl_random_insert_~new~0#1.base| v_ArrVal_2494))) (store .cse0 |c_ULTIMATE.start_sl_random_insert_~a1~0#1.base| (store (select .cse0 |c_ULTIMATE.start_sl_random_insert_~a1~0#1.base|) |c_ULTIMATE.start_sl_random_insert_~a1~0#1.offset| v_ArrVal_2496))) .cse1) .cse2) (select .cse3 .cse4))) (forall ((v_ArrVal_2495 Int) (v_ArrVal_2493 (Array Int Int))) (= (select .cse5 .cse4) (select (select (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_sl_random_insert_~new~0#1.base| v_ArrVal_2493))) (store .cse6 |c_ULTIMATE.start_sl_random_insert_~a1~0#1.base| (store (select .cse6 |c_ULTIMATE.start_sl_random_insert_~a1~0#1.base|) |c_ULTIMATE.start_sl_random_insert_~a1~0#1.offset| v_ArrVal_2495))) .cse1) .cse2)))))) is different from false [2024-12-01 13:31:40,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:40,792 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 356 treesize of output 350 [2024-12-01 13:31:40,803 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 379 treesize of output 347 [2024-12-01 13:31:40,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:40,835 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 764 treesize of output 748 [2024-12-01 13:31:40,851 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 631 treesize of output 599 [2024-12-01 13:31:42,154 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 17 treesize of output 9 [2024-12-01 13:31:42,167 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 17 treesize of output 9 [2024-12-01 13:31:42,421 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 17 treesize of output 9 [2024-12-01 13:31:42,458 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:42,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 426 treesize of output 402 [2024-12-01 13:31:43,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:31:43,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 432 treesize of output 392 [2024-12-01 13:31:46,296 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2024-12-01 13:31:46,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2024-12-01 13:31:46,480 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:31:46,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368325485] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:31:46,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:31:46,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 25, 23] total 76 [2024-12-01 13:31:46,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509113971] [2024-12-01 13:31:46,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:31:46,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-01 13:31:46,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:31:46,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-01 13:31:46,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=5244, Unknown=4, NotChecked=146, Total=5700 [2024-12-01 13:31:46,482 INFO L87 Difference]: Start difference. First operand 179 states and 205 transitions. Second operand has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 76 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:31:57,180 INFO L93 Difference]: Finished difference Result 246 states and 272 transitions. [2024-12-01 13:31:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-12-01 13:31:57,181 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 76 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-12-01 13:31:57,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:31:57,181 INFO L225 Difference]: With dead ends: 246 [2024-12-01 13:31:57,181 INFO L226 Difference]: Without dead ends: 246 [2024-12-01 13:31:57,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 105 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=916, Invalid=10214, Unknown=4, NotChecked=208, Total=11342 [2024-12-01 13:31:57,182 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 796 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-12-01 13:31:57,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1805 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1953 Invalid, 0 Unknown, 201 Unchecked, 4.2s Time] [2024-12-01 13:31:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-01 13:31:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 177. [2024-12-01 13:31:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 160 states have (on average 1.25) internal successors, (200), 176 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 200 transitions. [2024-12-01 13:31:57,185 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 200 transitions. Word has length 55 [2024-12-01 13:31:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:31:57,185 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 200 transitions. [2024-12-01 13:31:57,185 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.013157894736842) internal successors, (153), 76 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:31:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 200 transitions. [2024-12-01 13:31:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-01 13:31:57,185 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:31:57,185 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:31:57,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 13:31:57,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-12-01 13:31:57,386 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:31:57,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:31:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash -195896032, now seen corresponding path program 1 times [2024-12-01 13:31:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:31:57,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503527689] [2024-12-01 13:31:57,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:31:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:31:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:32:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503527689] [2024-12-01 13:32:03,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503527689] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:32:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356919742] [2024-12-01 13:32:03,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:03,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:32:03,481 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:32:03,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 13:32:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:03,695 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-01 13:32:03,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:32:04,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:32:04,441 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 39 treesize of output 1 [2024-12-01 13:32:04,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-12-01 13:32:04,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-12-01 13:32:04,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-12-01 13:32:05,006 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:05,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:32:05,070 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 58 treesize of output 44 [2024-12-01 13:32:05,685 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-01 13:32:05,685 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 11 treesize of output 11 [2024-12-01 13:32:05,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-12-01 13:32:05,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:05,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356919742] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:32:05,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:32:05,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 11, 11] total 48 [2024-12-01 13:32:05,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502620537] [2024-12-01 13:32:05,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:32:05,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-01 13:32:05,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:32:05,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-01 13:32:05,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=2208, Unknown=0, NotChecked=0, Total=2352 [2024-12-01 13:32:05,699 INFO L87 Difference]: Start difference. First operand 177 states and 200 transitions. Second operand has 49 states, 48 states have (on average 2.625) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:16,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:32:16,905 INFO L93 Difference]: Finished difference Result 396 states and 450 transitions. [2024-12-01 13:32:16,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-01 13:32:16,906 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.625) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-01 13:32:16,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:32:16,907 INFO L225 Difference]: With dead ends: 396 [2024-12-01 13:32:16,907 INFO L226 Difference]: Without dead ends: 396 [2024-12-01 13:32:16,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=884, Invalid=9016, Unknown=0, NotChecked=0, Total=9900 [2024-12-01 13:32:16,908 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 790 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 2396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-12-01 13:32:16,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 1646 Invalid, 2396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-12-01 13:32:16,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-12-01 13:32:16,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 191. [2024-12-01 13:32:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 174 states have (on average 1.2528735632183907) internal successors, (218), 190 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 218 transitions. [2024-12-01 13:32:16,913 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 218 transitions. Word has length 59 [2024-12-01 13:32:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:32:16,914 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 218 transitions. [2024-12-01 13:32:16,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.625) internal successors, (126), 49 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 218 transitions. [2024-12-01 13:32:16,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-01 13:32:16,914 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:32:16,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:32:16,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 13:32:17,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-12-01 13:32:17,115 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:32:17,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:32:17,115 INFO L85 PathProgramCache]: Analyzing trace with hash -195896031, now seen corresponding path program 1 times [2024-12-01 13:32:17,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:32:17,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626107038] [2024-12-01 13:32:17,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:17,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:32:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:21,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:21,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:32:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626107038] [2024-12-01 13:32:21,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626107038] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:32:21,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939931636] [2024-12-01 13:32:21,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:21,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:21,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:32:21,272 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:32:21,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 13:32:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:21,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-12-01 13:32:21,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:32:21,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-01 13:32:22,470 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 [2024-12-01 13:32:22,828 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 39 treesize of output 1 [2024-12-01 13:32:22,839 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 25 treesize of output 17 [2024-12-01 13:32:23,198 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 44 treesize of output 32 [2024-12-01 13:32:23,550 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:32:23,550 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 45 treesize of output 27 [2024-12-01 13:32:23,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-12-01 13:32:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:24,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:32:24,996 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 58 treesize of output 44 [2024-12-01 13:32:25,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:32:25,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:32:25,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:32:25,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 13:32:25,736 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-01 13:32:25,736 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 11 treesize of output 11 [2024-12-01 13:32:25,894 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:25,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939931636] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:32:25,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:32:25,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 16, 11] total 57 [2024-12-01 13:32:25,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850094538] [2024-12-01 13:32:25,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:32:25,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-01 13:32:25,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:32:25,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-01 13:32:25,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=3117, Unknown=0, NotChecked=0, Total=3306 [2024-12-01 13:32:25,895 INFO L87 Difference]: Start difference. First operand 191 states and 218 transitions. Second operand has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:38,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:32:38,802 INFO L93 Difference]: Finished difference Result 545 states and 627 transitions. [2024-12-01 13:32:38,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-12-01 13:32:38,802 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-12-01 13:32:38,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:32:38,804 INFO L225 Difference]: With dead ends: 545 [2024-12-01 13:32:38,804 INFO L226 Difference]: Without dead ends: 545 [2024-12-01 13:32:38,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1114, Invalid=10442, Unknown=0, NotChecked=0, Total=11556 [2024-12-01 13:32:38,805 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 1509 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 3143 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 3269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 3143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-12-01 13:32:38,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2400 Invalid, 3269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 3143 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-12-01 13:32:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2024-12-01 13:32:38,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 356. [2024-12-01 13:32:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 342 states have (on average 1.260233918128655) internal successors, (431), 355 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 431 transitions. [2024-12-01 13:32:38,813 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 431 transitions. Word has length 59 [2024-12-01 13:32:38,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:32:38,813 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 431 transitions. [2024-12-01 13:32:38,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:38,813 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 431 transitions. [2024-12-01 13:32:38,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-01 13:32:38,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:32:38,814 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:32:38,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 13:32:39,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:39,015 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:32:39,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:32:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1725388199, now seen corresponding path program 1 times [2024-12-01 13:32:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:32:39,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192797129] [2024-12-01 13:32:39,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:39,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:32:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:39,629 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:32:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192797129] [2024-12-01 13:32:39,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192797129] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:32:39,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590253325] [2024-12-01 13:32:39,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:39,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:39,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:32:39,631 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:32:39,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 13:32:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:39,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-12-01 13:32:39,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:32:40,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 13:32:40,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2024-12-01 13:32:40,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-12-01 13:32:40,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-12-01 13:32:40,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-01 13:32:40,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:40,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:32:40,265 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 56 treesize of output 44 [2024-12-01 13:32:40,601 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-01 13:32:40,602 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 11 treesize of output 11 [2024-12-01 13:32:40,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2024-12-01 13:32:40,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:40,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590253325] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:32:40,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:32:40,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 16 [2024-12-01 13:32:40,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556513382] [2024-12-01 13:32:40,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:32:40,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-01 13:32:40,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:32:40,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-01 13:32:40,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-12-01 13:32:40,616 INFO L87 Difference]: Start difference. First operand 356 states and 431 transitions. Second operand has 17 states, 16 states have (on average 4.5625) internal successors, (73), 17 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) [2024-12-01 13:32:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 13:32:42,688 INFO L93 Difference]: Finished difference Result 565 states and 691 transitions. [2024-12-01 13:32:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 13:32:42,689 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 17 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 61 [2024-12-01 13:32:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 13:32:42,690 INFO L225 Difference]: With dead ends: 565 [2024-12-01 13:32:42,690 INFO L226 Difference]: Without dead ends: 565 [2024-12-01 13:32:42,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=740, Unknown=0, NotChecked=0, Total=930 [2024-12-01 13:32:42,690 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 367 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 13:32:42,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 715 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 13:32:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-12-01 13:32:42,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 443. [2024-12-01 13:32:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 429 states have (on average 1.2703962703962703) internal successors, (545), 442 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 13:32:42,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 545 transitions. [2024-12-01 13:32:42,696 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 545 transitions. Word has length 61 [2024-12-01 13:32:42,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 13:32:42,696 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 545 transitions. [2024-12-01 13:32:42,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 17 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) [2024-12-01 13:32:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 545 transitions. [2024-12-01 13:32:42,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-01 13:32:42,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 13:32:42,697 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 13:32:42,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 13:32:42,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:42,897 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2024-12-01 13:32:42,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 13:32:42,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1725388198, now seen corresponding path program 1 times [2024-12-01 13:32:42,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 13:32:42,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476522317] [2024-12-01 13:32:42,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:42,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 13:32:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 13:32:43,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476522317] [2024-12-01 13:32:43,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476522317] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 13:32:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260135381] [2024-12-01 13:32:43,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 13:32:43,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 13:32:43,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 13:32:43,680 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 13:32:43,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12dd8be3-50a4-454d-b9e1-847c6719d496/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 13:32:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 13:32:43,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-12-01 13:32:43,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 13:32:43,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-01 13:32:44,593 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 [2024-12-01 13:32:44,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 1 [2024-12-01 13:32:44,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-12-01 13:32:45,064 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 40 treesize of output 28 [2024-12-01 13:32:45,455 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:32:45,455 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 41 treesize of output 23 [2024-12-01 13:32:46,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-12-01 13:32:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:46,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 13:32:47,981 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 124 treesize of output 112 [2024-12-01 13:32:47,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 13:32:47,992 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 280 treesize of output 230 [2024-12-01 13:32:49,157 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-01 13:32:49,158 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 59 treesize of output 50 [2024-12-01 13:32:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 13:32:49,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260135381] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 13:32:49,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 13:32:49,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 17] total 50 [2024-12-01 13:32:49,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060250242] [2024-12-01 13:32:49,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 13:32:49,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-12-01 13:32:49,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 13:32:49,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-12-01 13:32:49,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2366, Unknown=0, NotChecked=0, Total=2550 [2024-12-01 13:32:49,175 INFO L87 Difference]: Start difference. First operand 443 states and 545 transitions. Second operand has 51 states, 50 states have (on average 3.18) internal successors, (159), 51 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)