./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd --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 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:53:18,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:53:18,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:53:18,850 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:53:18,851 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:53:18,883 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:53:18,884 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:53:18,884 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:53:18,885 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:53:18,885 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:53:18,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:53:18,886 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:53:18,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:53:18,887 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:53:18,887 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:53:18,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:53:18,888 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:53:18,889 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:53:18,889 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:53:18,890 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:53:18,890 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:53:18,890 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:53:18,890 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:53:18,891 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:53:18,891 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:53:18,891 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_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd 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 -> 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 [2024-11-13 13:53:19,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:53:19,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:53:19,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:53:19,267 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:53:19,267 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:53:19,269 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-properties/alternating_list-1.i Unable to find full path for "g++" [2024-11-13 13:53:21,151 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:53:21,546 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:53:21,548 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/sv-benchmarks/c/list-properties/alternating_list-1.i [2024-11-13 13:53:21,570 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/e7f65ac19/0b88b2d0a6bc4c108b0e3406fb096f4d/FLAGddf504a7b [2024-11-13 13:53:21,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/e7f65ac19/0b88b2d0a6bc4c108b0e3406fb096f4d [2024-11-13 13:53:21,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:53:21,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:53:21,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:53:21,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:53:21,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:53:21,744 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:53:21" (1/1) ... [2024-11-13 13:53:21,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4cd79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:21, skipping insertion in model container [2024-11-13 13:53:21,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:53:21" (1/1) ... [2024-11-13 13:53:21,791 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:53:22,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:53:22,085 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:53:22,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:53:22,175 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:53:22,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22 WrapperNode [2024-11-13 13:53:22,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:53:22,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:53:22,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:53:22,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:53:22,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,219 INFO L138 Inliner]: procedures = 124, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2024-11-13 13:53:22,219 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:53:22,220 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:53:22,220 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:53:22,220 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:53:22,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,251 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-13 13:53:22,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:53:22,280 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:53:22,280 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:53:22,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:53:22,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (1/1) ... [2024-11-13 13:53:22,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:53:22,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:22,317 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:53:22,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-13 13:53:22,348 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 13:53:22,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 13:53:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 13:53:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:53:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:53:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:53:22,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:53:22,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:53:22,493 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:53:22,495 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:53:22,524 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-13 13:53:22,834 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-13 13:53:22,834 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:53:22,844 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:53:22,846 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:53:22,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:53:22 BoogieIcfgContainer [2024-11-13 13:53:22,846 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:53:22,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:53:22,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:53:22,854 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:53:22,855 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:53:21" (1/3) ... [2024-11-13 13:53:22,855 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3866ed6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:53:22, skipping insertion in model container [2024-11-13 13:53:22,856 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:53:22" (2/3) ... [2024-11-13 13:53:22,857 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3866ed6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:53:22, skipping insertion in model container [2024-11-13 13:53:22,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:53:22" (3/3) ... [2024-11-13 13:53:22,858 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2024-11-13 13:53:22,882 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:53:22,883 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG alternating_list-1.i that has 2 procedures, 80 locations, 1 initial locations, 3 loop locations, and 30 error locations. [2024-11-13 13:53:22,942 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:53:22,959 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;@1646905a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:53:22,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-13 13:53:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 46 states have (on average 1.934782608695652) internal successors, (89), 77 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 13:53:22,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:22,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 13:53:22,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:22,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:22,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517544, now seen corresponding path program 1 times [2024-11-13 13:53:22,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:22,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252301103] [2024-11-13 13:53:22,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:22,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:23,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:23,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252301103] [2024-11-13 13:53:23,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252301103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:23,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:23,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:53:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142197168] [2024-11-13 13:53:23,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:23,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:53:23,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:23,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:53:23,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:53:23,217 INFO L87 Difference]: Start difference. First operand has 79 states, 46 states have (on average 1.934782608695652) internal successors, (89), 77 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:23,239 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-11-13 13:53:23,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:53:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 13:53:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:23,249 INFO L225 Difference]: With dead ends: 78 [2024-11-13 13:53:23,249 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 13:53:23,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:53:23,254 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:23,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:53:23,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 13:53:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 13:53:23,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-13 13:53:23,341 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 6 [2024-11-13 13:53:23,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:23,342 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-13 13:53:23,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,343 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-13 13:53:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 13:53:23,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:23,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:23,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:53:23,344 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:23,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:23,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2098237138, now seen corresponding path program 1 times [2024-11-13 13:53:23,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:23,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213272225] [2024-11-13 13:53:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:23,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213272225] [2024-11-13 13:53:23,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213272225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:23,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:23,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:23,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330166282] [2024-11-13 13:53:23,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:23,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:53:23,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:53:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:53:23,528 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:23,761 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-13 13:53:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:53:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 13:53:23,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:23,762 INFO L225 Difference]: With dead ends: 73 [2024-11-13 13:53:23,763 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 13:53:23,763 INFO L431 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 [2024-11-13 13:53:23,764 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:23,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 52 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:53:23,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 13:53:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-13 13:53:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.7) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2024-11-13 13:53:23,778 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 7 [2024-11-13 13:53:23,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:23,779 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2024-11-13 13:53:23,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:23,779 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2024-11-13 13:53:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 13:53:23,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:23,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:23,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:53:23,781 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:23,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:23,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2098237139, now seen corresponding path program 1 times [2024-11-13 13:53:23,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:23,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104967405] [2024-11-13 13:53:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:23,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:23,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:23,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104967405] [2024-11-13 13:53:23,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104967405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:23,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:23,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:23,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313261567] [2024-11-13 13:53:23,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:23,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:53:23,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:53:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:53:23,986 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:24,191 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2024-11-13 13:53:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:53:24,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 13:53:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:24,193 INFO L225 Difference]: With dead ends: 94 [2024-11-13 13:53:24,193 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 13:53:24,194 INFO L431 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 [2024-11-13 13:53:24,194 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:24,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 84 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:53:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 13:53:24,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2024-11-13 13:53:24,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 88 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) [2024-11-13 13:53:24,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-13 13:53:24,206 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 7 [2024-11-13 13:53:24,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:24,207 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-13 13:53:24,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-13 13:53:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:53:24,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:24,208 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:24,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:53:24,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:24,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2085982939, now seen corresponding path program 1 times [2024-11-13 13:53:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:24,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974351526] [2024-11-13 13:53:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:24,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:24,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:24,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974351526] [2024-11-13 13:53:24,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974351526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:24,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:24,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:24,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590499567] [2024-11-13 13:53:24,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:24,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:53:24,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:24,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:53:24,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:53:24,369 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-13 13:53:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:24,510 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2024-11-13 13:53:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:53:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2024-11-13 13:53:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:24,512 INFO L225 Difference]: With dead ends: 95 [2024-11-13 13:53:24,514 INFO L226 Difference]: Without dead ends: 95 [2024-11-13 13:53:24,514 INFO L431 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 [2024-11-13 13:53:24,515 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 91 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:24,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 90 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:53:24,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-13 13:53:24,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-11-13 13:53:24,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 89 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) [2024-11-13 13:53:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-11-13 13:53:24,528 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 15 [2024-11-13 13:53:24,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:24,528 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-11-13 13:53:24,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-13 13:53:24,528 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-11-13 13:53:24,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 13:53:24,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:24,529 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:24,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:53:24,529 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:24,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:24,530 INFO L85 PathProgramCache]: Analyzing trace with hash 241007542, now seen corresponding path program 1 times [2024-11-13 13:53:24,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:24,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128278964] [2024-11-13 13:53:24,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:24,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:24,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128278964] [2024-11-13 13:53:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128278964] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:24,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:24,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:53:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460249264] [2024-11-13 13:53:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:24,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:53:24,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:53:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:53:24,836 INFO L87 Difference]: Start difference. First operand 90 states and 102 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) 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) [2024-11-13 13:53:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:25,098 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2024-11-13 13:53:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:53:25,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 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 [2024-11-13 13:53:25,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:25,101 INFO L225 Difference]: With dead ends: 101 [2024-11-13 13:53:25,101 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 13:53:25,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:53:25,103 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 34 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:25,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 266 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:53:25,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 13:53:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2024-11-13 13:53:25,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 73 states have (on average 1.4794520547945205) internal successors, (108), 95 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 108 transitions. [2024-11-13 13:53:25,116 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 108 transitions. Word has length 16 [2024-11-13 13:53:25,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:25,116 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 108 transitions. [2024-11-13 13:53:25,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 108 transitions. [2024-11-13 13:53:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:53:25,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:25,117 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:25,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:53:25,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:25,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1120117687, now seen corresponding path program 1 times [2024-11-13 13:53:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:25,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566959641] [2024-11-13 13:53:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:25,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:25,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566959641] [2024-11-13 13:53:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566959641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:25,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:25,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:53:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062616328] [2024-11-13 13:53:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:25,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:53:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:25,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:53:25,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:53:25,333 INFO L87 Difference]: Start difference. First operand 96 states and 108 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:25,489 INFO L93 Difference]: Finished difference Result 103 states and 114 transitions. [2024-11-13 13:53:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:53:25,493 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 13:53:25,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:25,495 INFO L225 Difference]: With dead ends: 103 [2024-11-13 13:53:25,495 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 13:53:25,495 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:53:25,498 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 18 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:25,498 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 168 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:53:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 13:53:25,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 13:53:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 91 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) [2024-11-13 13:53:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2024-11-13 13:53:25,511 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 17 [2024-11-13 13:53:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:25,512 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2024-11-13 13:53:25,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2024-11-13 13:53:25,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:53:25,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:25,515 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:25,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:53:25,516 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1062704677, now seen corresponding path program 1 times [2024-11-13 13:53:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064552319] [2024-11-13 13:53:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:25,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:25,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:25,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064552319] [2024-11-13 13:53:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064552319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:25,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:25,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:53:25,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600042524] [2024-11-13 13:53:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:25,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:53:25,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:53:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:25,601 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:25,623 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2024-11-13 13:53:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:53:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 13:53:25,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:25,625 INFO L225 Difference]: With dead ends: 140 [2024-11-13 13:53:25,625 INFO L226 Difference]: Without dead ends: 140 [2024-11-13 13:53:25,625 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:53:25,626 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 47 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:25,626 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 155 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:53:25,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-13 13:53:25,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 101. [2024-11-13 13:53:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 78 states have (on average 1.4871794871794872) internal successors, (116), 100 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-13 13:53:25,639 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 17 [2024-11-13 13:53:25,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:25,639 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-13 13:53:25,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:25,640 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-13 13:53:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:53:25,640 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:25,640 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:25,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:53:25,643 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:25,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:25,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1901583137, now seen corresponding path program 1 times [2024-11-13 13:53:25,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:25,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868703644] [2024-11-13 13:53:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:25,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868703644] [2024-11-13 13:53:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868703644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:53:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101646385] [2024-11-13 13:53:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:25,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:53:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:53:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:53:25,857 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:26,066 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2024-11-13 13:53:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:53:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 13:53:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:26,068 INFO L225 Difference]: With dead ends: 98 [2024-11-13 13:53:26,069 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 13:53:26,070 INFO L431 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 [2024-11-13 13:53:26,070 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:26,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 152 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:53:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 13:53:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-11-13 13:53:26,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.4487179487179487) internal successors, (113), 97 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2024-11-13 13:53:26,079 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 17 [2024-11-13 13:53:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:26,081 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2024-11-13 13:53:26,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2024-11-13 13:53:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 13:53:26,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:26,082 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:53:26,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:53:26,082 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:26,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1901583136, now seen corresponding path program 1 times [2024-11-13 13:53:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:26,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127361651] [2024-11-13 13:53:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127361651] [2024-11-13 13:53:26,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127361651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:53:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:53:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:53:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692594275] [2024-11-13 13:53:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:53:26,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:53:26,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:53:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:53:26,410 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:26,631 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2024-11-13 13:53:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:53:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 13:53:26,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:26,632 INFO L225 Difference]: With dead ends: 93 [2024-11-13 13:53:26,632 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 13:53:26,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:53:26,633 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 9 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:26,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 202 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:53:26,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 13:53:26,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2024-11-13 13:53:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 85 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-11-13 13:53:26,640 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 17 [2024-11-13 13:53:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:26,640 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-11-13 13:53:26,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-11-13 13:53:26,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 13:53:26,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:26,645 INFO L215 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] [2024-11-13 13:53:26,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:53:26,645 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:26,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:26,646 INFO L85 PathProgramCache]: Analyzing trace with hash -2136079652, now seen corresponding path program 1 times [2024-11-13 13:53:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:26,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756822100] [2024-11-13 13:53:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:27,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:27,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756822100] [2024-11-13 13:53:27,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756822100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:27,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408763160] [2024-11-13 13:53:27,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:27,317 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:27,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:53:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:27,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 13:53:27,441 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:27,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 13:53:27,601 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 13:53:27,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 13:53:27,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 13:53:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:53:27,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 13:53:27,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2024-11-13 13:53:27,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 13:53:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:27,764 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:29,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:53:29,537 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 23 treesize of output 29 [2024-11-13 13:53:29,563 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 13:53:29,563 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 29 [2024-11-13 13:53:29,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2024-11-13 13:53:29,591 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:53:29,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-13 13:53:29,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:29,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408763160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:53:29,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:53:29,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 19 [2024-11-13 13:53:29,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472387310] [2024-11-13 13:53:29,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:53:29,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:53:29,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:53:29,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:53:29,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=266, Unknown=18, NotChecked=0, Total=342 [2024-11-13 13:53:29,638 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:30,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:53:30,557 INFO L93 Difference]: Finished difference Result 215 states and 235 transitions. [2024-11-13 13:53:30,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 13:53:30,558 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 13:53:30,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:53:30,559 INFO L225 Difference]: With dead ends: 215 [2024-11-13 13:53:30,559 INFO L226 Difference]: Without dead ends: 215 [2024-11-13 13:53:30,561 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=144, Invalid=643, Unknown=25, NotChecked=0, Total=812 [2024-11-13 13:53:30,563 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 187 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:53:30,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 702 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 13:53:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-13 13:53:30,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 103. [2024-11-13 13:53:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 88 states have (on average 1.3409090909090908) internal successors, (118), 102 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:30,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-13 13:53:30,572 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 26 [2024-11-13 13:53:30,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:53:30,572 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-13 13:53:30,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:53:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-13 13:53:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 13:53:30,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:53:30,573 INFO L215 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] [2024-11-13 13:53:30,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:53:30,777 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:30,777 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 13:53:30,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:53:30,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2136058894, now seen corresponding path program 1 times [2024-11-13 13:53:30,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:53:30,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678869024] [2024-11-13 13:53:30,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:30,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:53:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:31,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:53:31,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678869024] [2024-11-13 13:53:31,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678869024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:53:31,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562140019] [2024-11-13 13:53:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:53:31,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:53:31,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:53:31,422 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:53:31,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:53:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:53:31,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 13:53:31,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:53:31,620 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-13 13:53:31,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-13 13:53:31,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 13:53:31,899 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 13:53:31,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-13 13:53:32,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 13:53:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:53:32,137 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:53:32,227 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_175 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_175) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2024-11-13 13:53:32,244 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_175 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_175) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) 1)) is different from false [2024-11-13 13:53:32,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:53:32,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2024-11-13 13:53:32,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:53:32,324 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 40 treesize of output 39 [2024-11-13 13:53:32,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2024-11-13 13:53:33,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:53:33,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 150 treesize of output 748 [2024-11-13 14:01:16,313 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-13 14:01:16,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-13 14:01:16,314 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-13 14:01:16,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:01:16,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:16,515 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:324) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:180) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2024-11-13 14:01:16,521 INFO L158 Benchmark]: Toolchain (without parser) took 474788.23ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 93.8MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-13 14:01:16,521 INFO L158 Benchmark]: CDTParser took 1.16ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:01:16,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.30ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 76.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:01:16,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.79ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:01:16,523 INFO L158 Benchmark]: Boogie Preprocessor took 59.25ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 73.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:01:16,523 INFO L158 Benchmark]: RCFGBuilder took 566.43ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 55.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:01:16,524 INFO L158 Benchmark]: TraceAbstraction took 473671.22ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 54.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-13 14:01:16,525 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.16ms. Allocated memory is still 142.6MB. Free memory is still 81.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.30ms. Allocated memory is still 117.4MB. Free memory was 93.8MB in the beginning and 76.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.79ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 74.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 59.25ms. Allocated memory is still 117.4MB. Free memory was 74.9MB in the beginning and 73.0MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 566.43ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 55.1MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 473671.22ms. Allocated memory was 117.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 54.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd --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 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:01:19,001 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:01:19,107 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:01:19,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:01:19,113 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:01:19,137 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:01:19,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:01:19,138 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:01:19,138 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:01:19,139 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:01:19,139 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:01:19,139 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:01:19,139 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:01:19,139 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:01:19,140 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:01:19,140 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:01:19,140 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:01:19,140 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:01:19,140 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:01:19,141 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:01:19,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:01:19,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:01:19,143 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:01:19,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:01:19,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:01:19,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:01:19,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:01:19,143 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:01:19,144 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:01:19,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:01:19,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:01:19,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:01:19,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:01:19,144 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_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd 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 -> 941f3dd0e4566f414ae914eed10af26405f8e9f2f3d427c146090b07336d2fc2 [2024-11-13 14:01:19,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:01:19,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:01:19,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:01:19,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:01:19,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:01:19,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/list-properties/alternating_list-1.i Unable to find full path for "g++" [2024-11-13 14:01:21,430 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:01:21,746 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:01:21,747 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/sv-benchmarks/c/list-properties/alternating_list-1.i [2024-11-13 14:01:21,767 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/5519fd50c/a996f07718aa44e1a4922008a06c8afa/FLAGc6e8a328a [2024-11-13 14:01:21,791 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/data/5519fd50c/a996f07718aa44e1a4922008a06c8afa [2024-11-13 14:01:21,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:01:21,797 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:01:21,798 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:01:21,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:01:21,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:01:21,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:01:21" (1/1) ... [2024-11-13 14:01:21,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206982b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:21, skipping insertion in model container [2024-11-13 14:01:21,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:01:21" (1/1) ... [2024-11-13 14:01:21,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:01:22,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:01:22,265 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:01:22,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:01:22,374 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:01:22,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22 WrapperNode [2024-11-13 14:01:22,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:01:22,377 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:01:22,377 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:01:22,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:01:22,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,440 INFO L138 Inliner]: procedures = 127, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 91 [2024-11-13 14:01:22,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:01:22,443 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:01:22,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:01:22,444 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:01:22,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,483 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-13 14:01:22,485 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,485 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,499 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,506 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,512 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,513 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,520 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:01:22,520 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:01:22,520 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:01:22,521 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:01:22,522 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (1/1) ... [2024-11-13 14:01:22,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:01:22,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:22,557 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:01:22,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-13 14:01:22,583 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:01:22,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:01:22,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:01:22,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:01:22,707 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:01:22,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:01:22,742 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-13 14:01:23,258 INFO L? ?]: Removed 61 outVars from TransFormulas that were not future-live. [2024-11-13 14:01:23,259 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:01:23,277 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:01:23,277 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:01:23,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:01:23 BoogieIcfgContainer [2024-11-13 14:01:23,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:01:23,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:01:23,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:01:23,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:01:23,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:01:21" (1/3) ... [2024-11-13 14:01:23,287 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f261ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:01:23, skipping insertion in model container [2024-11-13 14:01:23,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:01:22" (2/3) ... [2024-11-13 14:01:23,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f261ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:01:23, skipping insertion in model container [2024-11-13 14:01:23,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:01:23" (3/3) ... [2024-11-13 14:01:23,289 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list-1.i [2024-11-13 14:01:23,304 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:01:23,306 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG alternating_list-1.i that has 2 procedures, 80 locations, 1 initial locations, 3 loop locations, and 30 error locations. [2024-11-13 14:01:23,355 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:01:23,369 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;@386fe7b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:01:23,372 INFO L334 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2024-11-13 14:01:23,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 46 states have (on average 1.934782608695652) internal successors, (89), 77 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:23,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:01:23,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:23,382 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:01:23,383 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:23,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1037517544, now seen corresponding path program 1 times [2024-11-13 14:01:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [408706927] [2024-11-13 14:01:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:23,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:23,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:23,400 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:23,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:01:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:23,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 14:01:23,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:23,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:23,542 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:23,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408706927] [2024-11-13 14:01:23,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408706927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:23,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:23,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:01:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062053412] [2024-11-13 14:01:23,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:23,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:01:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:01:23,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:01:23,580 INFO L87 Difference]: Start difference. First operand has 79 states, 46 states have (on average 1.934782608695652) internal successors, (89), 77 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:23,600 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-11-13 14:01:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:01:23,603 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 14:01:23,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:23,610 INFO L225 Difference]: With dead ends: 78 [2024-11-13 14:01:23,611 INFO L226 Difference]: Without dead ends: 72 [2024-11-13 14:01:23,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:01:23,616 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:23,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:01:23,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-13 14:01:23,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-13 14:01:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 71 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:23,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2024-11-13 14:01:23,654 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 6 [2024-11-13 14:01:23,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:23,654 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2024-11-13 14:01:23,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:23,654 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2024-11-13 14:01:23,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:01:23,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:23,655 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:23,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:01:23,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:23,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:23,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2098237138, now seen corresponding path program 1 times [2024-11-13 14:01:23,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:23,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673430837] [2024-11-13 14:01:23,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:23,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:23,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:23,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:23,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:01:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:23,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:01:23,926 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:23,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:01:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:24,018 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:24,018 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:24,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673430837] [2024-11-13 14:01:24,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673430837] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:24,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:24,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:01:24,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838748944] [2024-11-13 14:01:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:24,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:01:24,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:01:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:01:24,020 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:24,351 INFO L93 Difference]: Finished difference Result 73 states and 85 transitions. [2024-11-13 14:01:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:01:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:01:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:24,353 INFO L225 Difference]: With dead ends: 73 [2024-11-13 14:01:24,354 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 14:01:24,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:01:24,355 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 87 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:24,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 52 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:01:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 14:01:24,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-13 14:01:24,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.7) internal successors, (85), 72 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2024-11-13 14:01:24,367 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 7 [2024-11-13 14:01:24,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:24,367 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2024-11-13 14:01:24,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:24,367 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2024-11-13 14:01:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:01:24,369 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:24,369 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:24,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:01:24,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:24,570 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:24,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2098237139, now seen corresponding path program 1 times [2024-11-13 14:01:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352290315] [2024-11-13 14:01:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:24,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:24,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:24,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:01:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:24,648 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:01:24,649 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:24,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:01:24,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:24,778 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:24,778 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:24,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352290315] [2024-11-13 14:01:24,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352290315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:24,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:24,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:01:24,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401257030] [2024-11-13 14:01:24,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:24,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:01:24,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:24,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:01:24,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:01:24,780 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:25,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:25,105 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2024-11-13 14:01:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:01:25,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:01:25,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:25,108 INFO L225 Difference]: With dead ends: 94 [2024-11-13 14:01:25,110 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 14:01:25,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:01:25,111 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 99 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:25,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 84 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:01:25,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 14:01:25,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2024-11-13 14:01:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 88 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) [2024-11-13 14:01:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2024-11-13 14:01:25,124 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 7 [2024-11-13 14:01:25,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:25,124 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2024-11-13 14:01:25,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:25,125 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2024-11-13 14:01:25,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 14:01:25,125 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:25,125 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:25,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:01:25,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:25,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:25,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:25,326 INFO L85 PathProgramCache]: Analyzing trace with hash 2085982939, now seen corresponding path program 1 times [2024-11-13 14:01:25,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:25,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092542981] [2024-11-13 14:01:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:25,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:25,329 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:25,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:01:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:25,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:01:25,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:25,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:25,470 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092542981] [2024-11-13 14:01:25,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092542981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:25,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:25,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:01:25,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448014368] [2024-11-13 14:01:25,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:25,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:01:25,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:25,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:01:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:01:25,472 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-13 14:01:25,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:25,748 INFO L93 Difference]: Finished difference Result 95 states and 106 transitions. [2024-11-13 14:01:25,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:01:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2024-11-13 14:01:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:25,752 INFO L225 Difference]: With dead ends: 95 [2024-11-13 14:01:25,752 INFO L226 Difference]: Without dead ends: 95 [2024-11-13 14:01:25,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:01:25,753 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 91 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:25,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 90 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:01:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-13 14:01:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2024-11-13 14:01:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.5223880597014925) internal successors, (102), 89 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) [2024-11-13 14:01:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 102 transitions. [2024-11-13 14:01:25,768 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 102 transitions. Word has length 15 [2024-11-13 14:01:25,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:25,768 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 102 transitions. [2024-11-13 14:01:25,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-13 14:01:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 102 transitions. [2024-11-13 14:01:25,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:01:25,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:25,771 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:25,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:01:25,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:25,976 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:25,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash 241007542, now seen corresponding path program 1 times [2024-11-13 14:01:25,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:25,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059333955] [2024-11-13 14:01:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:25,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:25,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:25,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:01:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:26,054 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:01:26,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:26,118 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:26,119 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:26,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059333955] [2024-11-13 14:01:26,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059333955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:26,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:01:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31560102] [2024-11-13 14:01:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:26,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:01:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:01:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:01:26,120 INFO L87 Difference]: Start difference. First operand 90 states and 102 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) [2024-11-13 14:01:26,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:26,363 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-11-13 14:01:26,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:01:26,363 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 [2024-11-13 14:01:26,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:26,364 INFO L225 Difference]: With dead ends: 97 [2024-11-13 14:01:26,364 INFO L226 Difference]: Without dead ends: 97 [2024-11-13 14:01:26,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:01:26,365 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 91 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:26,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 154 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:01:26,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-13 14:01:26,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2024-11-13 14:01:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.5072463768115942) internal successors, (104), 91 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:26,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 104 transitions. [2024-11-13 14:01:26,371 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 104 transitions. Word has length 16 [2024-11-13 14:01:26,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:26,371 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 104 transitions. [2024-11-13 14:01:26,372 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) [2024-11-13 14:01:26,372 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 104 transitions. [2024-11-13 14:01:26,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:01:26,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:26,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:26,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:01:26,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:26,577 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:26,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:26,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1510213439, now seen corresponding path program 1 times [2024-11-13 14:01:26,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242958620] [2024-11-13 14:01:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:26,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:26,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:26,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:26,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:01:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:26,655 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:01:26,656 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:26,674 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:26,674 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242958620] [2024-11-13 14:01:26,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242958620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:26,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:26,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:01:26,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094340918] [2024-11-13 14:01:26,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:26,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:01:26,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:26,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:01:26,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:01:26,677 INFO L87 Difference]: Start difference. First operand 92 states and 104 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2024-11-13 14:01:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:26,695 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2024-11-13 14:01:26,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:01:26,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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 [2024-11-13 14:01:26,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:26,696 INFO L225 Difference]: With dead ends: 142 [2024-11-13 14:01:26,697 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 14:01:26,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:01:26,697 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 49 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:26,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 138 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:01:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 14:01:26,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 101. [2024-11-13 14:01:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 78 states have (on average 1.5) internal successors, (117), 100 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) [2024-11-13 14:01:26,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2024-11-13 14:01:26,711 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 16 [2024-11-13 14:01:26,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:26,712 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2024-11-13 14:01:26,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 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) [2024-11-13 14:01:26,712 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2024-11-13 14:01:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:01:26,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:26,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:26,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:01:26,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:26,917 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:26,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:26,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1214388809, now seen corresponding path program 1 times [2024-11-13 14:01:26,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:26,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1049802529] [2024-11-13 14:01:26,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:26,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:26,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:26,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:26,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:01:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:26,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:01:26,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:27,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:01:27,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:27,094 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:27,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:27,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049802529] [2024-11-13 14:01:27,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049802529] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:27,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:27,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:01:27,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335559071] [2024-11-13 14:01:27,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:27,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:01:27,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:27,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:01:27,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:01:27,095 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2024-11-13 14:01:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:27,461 INFO L93 Difference]: Finished difference Result 114 states and 130 transitions. [2024-11-13 14:01:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:01:27,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 [2024-11-13 14:01:27,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:27,462 INFO L225 Difference]: With dead ends: 114 [2024-11-13 14:01:27,462 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 14:01:27,463 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:01:27,463 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 27 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:27,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 221 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:01:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 14:01:27,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2024-11-13 14:01:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 81 states have (on average 1.4814814814814814) internal successors, (120), 103 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:27,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2024-11-13 14:01:27,473 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 16 [2024-11-13 14:01:27,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:27,473 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2024-11-13 14:01:27,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) [2024-11-13 14:01:27,473 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2024-11-13 14:01:27,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:01:27,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:27,474 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:27,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:01:27,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:27,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:27,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:27,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1118700640, now seen corresponding path program 1 times [2024-11-13 14:01:27,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:27,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477830534] [2024-11-13 14:01:27,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:27,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:27,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:27,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:01:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:27,754 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:01:27,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:27,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:01:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:27,854 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:27,854 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:27,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477830534] [2024-11-13 14:01:27,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477830534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:27,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:27,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:01:27,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734470653] [2024-11-13 14:01:27,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:27,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:01:27,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:27,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:01:27,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:01:27,856 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:28,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:28,164 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2024-11-13 14:01:28,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:01:28,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 14:01:28,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:28,165 INFO L225 Difference]: With dead ends: 113 [2024-11-13 14:01:28,165 INFO L226 Difference]: Without dead ends: 113 [2024-11-13 14:01:28,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:01:28,166 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 23 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:28,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 225 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:01:28,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-13 14:01:28,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2024-11-13 14:01:28,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 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) [2024-11-13 14:01:28,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2024-11-13 14:01:28,171 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 17 [2024-11-13 14:01:28,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:28,172 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2024-11-13 14:01:28,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:28,172 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2024-11-13 14:01:28,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:01:28,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:28,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:28,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:01:28,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:28,373 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:28,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:28,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1120117687, now seen corresponding path program 1 times [2024-11-13 14:01:28,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:28,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921157081] [2024-11-13 14:01:28,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:28,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:28,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:28,376 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:28,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:01:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:28,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:01:28,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:28,623 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~p~0#1.base_49| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_49|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~p~0#1.base_49| (_ bv0 1))))) is different from true [2024-11-13 14:01:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:28,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:28,624 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921157081] [2024-11-13 14:01:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921157081] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:01:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863645414] [2024-11-13 14:01:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:28,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:01:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:01:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2024-11-13 14:01:28,625 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:28,936 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2024-11-13 14:01:28,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:01:28,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 14:01:28,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:28,938 INFO L225 Difference]: With dead ends: 111 [2024-11-13 14:01:28,938 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 14:01:28,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2024-11-13 14:01:28,939 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 12 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:28,939 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 127 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 86 Unchecked, 0.3s Time] [2024-11-13 14:01:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 14:01:28,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-13 14:01:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 99 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) [2024-11-13 14:01:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2024-11-13 14:01:28,944 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 17 [2024-11-13 14:01:28,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:28,944 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2024-11-13 14:01:28,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:28,944 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2024-11-13 14:01:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:01:28,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:28,945 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:28,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:01:29,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:29,149 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:29,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:29,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1901583137, now seen corresponding path program 1 times [2024-11-13 14:01:29,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:29,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859176079] [2024-11-13 14:01:29,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:29,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:29,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:29,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:29,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:01:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:29,230 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:01:29,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:29,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:01:29,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:01:29,281 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 23 treesize of output 11 [2024-11-13 14:01:29,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:29,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:29,319 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:29,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859176079] [2024-11-13 14:01:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859176079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:29,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:29,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:01:29,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318497813] [2024-11-13 14:01:29,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:29,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:01:29,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:01:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:01:29,320 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:29,728 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2024-11-13 14:01:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:01:29,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 14:01:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:29,730 INFO L225 Difference]: With dead ends: 97 [2024-11-13 14:01:29,730 INFO L226 Difference]: Without dead ends: 97 [2024-11-13 14:01:29,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:01:29,731 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 27 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:29,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 152 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:01:29,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-13 14:01:29,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-13 14:01:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 77 states have (on average 1.4545454545454546) internal successors, (112), 96 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) [2024-11-13 14:01:29,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2024-11-13 14:01:29,741 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 17 [2024-11-13 14:01:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:29,741 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2024-11-13 14:01:29,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:29,741 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2024-11-13 14:01:29,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:01:29,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:29,741 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:01:29,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 14:01:29,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:29,942 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:29,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1901583136, now seen corresponding path program 1 times [2024-11-13 14:01:29,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:29,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288070292] [2024-11-13 14:01:29,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:29,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:29,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:29,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:01:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:30,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:01:30,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:30,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:01:30,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 14:01:30,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:01:30,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 14:01:30,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:30,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:01:30,191 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288070292] [2024-11-13 14:01:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288070292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:01:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:01:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:01:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598346736] [2024-11-13 14:01:30,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:01:30,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:01:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:01:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:01:30,193 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:30,582 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2024-11-13 14:01:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:01:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 14:01:30,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:30,584 INFO L225 Difference]: With dead ends: 92 [2024-11-13 14:01:30,584 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 14:01:30,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:01:30,585 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 9 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:30,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 202 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:01:30,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 14:01:30,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2024-11-13 14:01:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.4) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2024-11-13 14:01:30,589 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 17 [2024-11-13 14:01:30,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:30,589 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2024-11-13 14:01:30,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:30,589 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2024-11-13 14:01:30,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:01:30,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:30,590 INFO L215 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] [2024-11-13 14:01:30,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:01:30,790 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:30,791 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:30,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash -2136079652, now seen corresponding path program 1 times [2024-11-13 14:01:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:30,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337529028] [2024-11-13 14:01:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:30,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:30,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:30,793 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:30,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:01:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:30,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:01:30,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:30,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:01:30,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:01:31,085 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:01:31,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:01:31,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:01:31,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 14:01:31,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:01:31,213 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 20 treesize of output 8 [2024-11-13 14:01:31,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:01:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:31,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:01:31,473 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2024-11-13 14:01:31,486 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv1 32) (select (select (store |c_#memory_int#1| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) is different from false [2024-11-13 14:01:31,528 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_129 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv1 32) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_129) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_130) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (not (= v_ArrVal_129 (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_129 .cse0))))))) is different from false [2024-11-13 14:01:31,764 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:01:31,765 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 70 treesize of output 74 [2024-11-13 14:01:31,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2024-11-13 14:01:31,853 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 89 treesize of output 85 [2024-11-13 14:01:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:32,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:32,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337529028] [2024-11-13 14:01:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337529028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:01:32,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:01:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2024-11-13 14:01:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277973373] [2024-11-13 14:01:32,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:01:32,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:01:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:32,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:01:32,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=162, Unknown=11, NotChecked=84, Total=306 [2024-11-13 14:01:32,126 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:33,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:01:33,598 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-11-13 14:01:33,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 14:01:33,599 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 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 26 [2024-11-13 14:01:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:01:33,599 INFO L225 Difference]: With dead ends: 93 [2024-11-13 14:01:33,599 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 14:01:33,600 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=153, Invalid=486, Unknown=23, NotChecked=150, Total=812 [2024-11-13 14:01:33,600 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 110 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 214 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:01:33,601 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 297 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 284 Invalid, 7 Unknown, 214 Unchecked, 0.8s Time] [2024-11-13 14:01:33,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 14:01:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 85. [2024-11-13 14:01:33,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 84 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) [2024-11-13 14:01:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2024-11-13 14:01:33,606 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 26 [2024-11-13 14:01:33,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:01:33,607 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2024-11-13 14:01:33,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:01:33,607 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2024-11-13 14:01:33,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:01:33,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:01:33,609 INFO L215 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] [2024-11-13 14:01:33,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 14:01:33,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:33,810 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:01:33,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:01:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2136058894, now seen corresponding path program 1 times [2024-11-13 14:01:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:01:33,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1129225265] [2024-11-13 14:01:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:01:33,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:01:33,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:01:33,814 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:01:33,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:01:33,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:01:33,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 14:01:33,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:01:33,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:01:34,106 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:01:34,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 14:01:34,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:01:34,423 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:01:34,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-13 14:01:34,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 14:01:34,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:34,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:01:34,901 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_157 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_157) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))))))) is different from false [2024-11-13 14:01:34,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:01:34,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 27 [2024-11-13 14:01:35,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:01:35,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 14:01:35,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:01:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:01:58,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:01:58,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129225265] [2024-11-13 14:01:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129225265] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:01:58,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:01:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-13 14:01:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880876548] [2024-11-13 14:01:58,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:01:58,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:01:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:01:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:01:58,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=333, Unknown=7, NotChecked=38, Total=462 [2024-11-13 14:01:58,678 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:00,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:00,442 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2024-11-13 14:02:00,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:02:00,443 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2024-11-13 14:02:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:00,444 INFO L225 Difference]: With dead ends: 165 [2024-11-13 14:02:00,444 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 14:02:00,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=123, Invalid=474, Unknown=7, NotChecked=46, Total=650 [2024-11-13 14:02:00,446 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 186 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 141 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:00,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 422 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 541 Invalid, 0 Unknown, 141 Unchecked, 1.4s Time] [2024-11-13 14:02:00,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 14:02:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 105. [2024-11-13 14:02:00,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 90 states have (on average 1.3333333333333333) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-13 14:02:00,453 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 26 [2024-11-13 14:02:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:00,454 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-13 14:02:00,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-13 14:02:00,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:02:00,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:00,457 INFO L215 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] [2024-11-13 14:02:00,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:02:00,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:00,658 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:00,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:00,658 INFO L85 PathProgramCache]: Analyzing trace with hash -2136058893, now seen corresponding path program 1 times [2024-11-13 14:02:00,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:00,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [590155203] [2024-11-13 14:02:00,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:00,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:00,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:00,660 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:00,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:02:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:00,752 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:02:00,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:00,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:02:00,913 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:00,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:00,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:02:01,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:02:01,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:02:01,239 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:02:01,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-11-13 14:02:01,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 14:02:01,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 14:02:01,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:02:01,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:01,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:01,930 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_186 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_185 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_186 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_186) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_185) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:02:02,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:02,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2024-11-13 14:02:02,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:02,543 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 50 treesize of output 43 [2024-11-13 14:02:02,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2024-11-13 14:02:02,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:02,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2024-11-13 14:02:02,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:02,608 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 1 case distinctions, treesize of input 35 treesize of output 36 [2024-11-13 14:02:02,612 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:02:02,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:02:02,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 14:02:02,624 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:02:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:02:02,630 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 24 treesize of output 12 [2024-11-13 14:02:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 14:02:09,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:09,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590155203] [2024-11-13 14:02:09,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590155203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:09,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:09,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2024-11-13 14:02:09,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629979916] [2024-11-13 14:02:09,187 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:09,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:02:09,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:09,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:02:09,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=343, Unknown=20, NotChecked=38, Total=462 [2024-11-13 14:02:09,189 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:12,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:12,199 INFO L93 Difference]: Finished difference Result 170 states and 199 transitions. [2024-11-13 14:02:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:02:12,201 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 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 26 [2024-11-13 14:02:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:12,202 INFO L225 Difference]: With dead ends: 170 [2024-11-13 14:02:12,202 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:02:12,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=201, Invalid=969, Unknown=24, NotChecked=66, Total=1260 [2024-11-13 14:02:12,203 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 330 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:12,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 569 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 597 Invalid, 0 Unknown, 144 Unchecked, 1.9s Time] [2024-11-13 14:02:12,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:02:12,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 110. [2024-11-13 14:02:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.3195876288659794) internal successors, (128), 109 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2024-11-13 14:02:12,208 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 26 [2024-11-13 14:02:12,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:12,208 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2024-11-13 14:02:12,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.4285714285714284) internal successors, (51), 22 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:12,208 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2024-11-13 14:02:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:02:12,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:12,209 INFO L215 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] [2024-11-13 14:02:12,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:02:12,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:12,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:12,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:12,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1904007827, now seen corresponding path program 1 times [2024-11-13 14:02:12,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:12,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348506137] [2024-11-13 14:02:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:12,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:12,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:12,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:02:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:12,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:02:12,499 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:12,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:12,573 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:02:12,573 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:12,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348506137] [2024-11-13 14:02:12,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348506137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:12,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:12,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:02:12,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456128742] [2024-11-13 14:02:12,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:12,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:02:12,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:12,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:02:12,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:02:12,574 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:12,884 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2024-11-13 14:02:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:02:12,884 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 [2024-11-13 14:02:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:12,886 INFO L225 Difference]: With dead ends: 115 [2024-11-13 14:02:12,886 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:02:12,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:02:12,887 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:12,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 234 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:02:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:02:12,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-11-13 14:02:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 100 states have (on average 1.31) internal successors, (131), 112 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) [2024-11-13 14:02:12,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2024-11-13 14:02:12,892 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 27 [2024-11-13 14:02:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:12,893 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2024-11-13 14:02:12,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:12,893 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2024-11-13 14:02:12,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:02:12,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:12,896 INFO L215 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] [2024-11-13 14:02:12,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:02:13,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:13,097 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:13,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:13,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1905424874, now seen corresponding path program 1 times [2024-11-13 14:02:13,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:13,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674366289] [2024-11-13 14:02:13,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:13,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:13,099 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:13,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:02:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:13,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:02:13,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:13,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:02:13,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:02:13,313 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:13,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:13,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:02:13,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-13 14:02:13,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 14:02:13,411 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 20 treesize of output 8 [2024-11-13 14:02:13,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:02:13,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:02:13,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:13,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:13,603 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv3 32) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_237) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2024-11-13 14:02:13,625 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_237 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv3 32) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_237) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)))) is different from false [2024-11-13 14:02:13,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_234 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_237 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_234 (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_234 .cse0))))) (not (= (_ bv3 32) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_234) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_237) |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))))) is different from false [2024-11-13 14:02:13,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:13,872 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 75 treesize of output 79 [2024-11-13 14:02:13,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2024-11-13 14:02:13,933 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 [2024-11-13 14:02:13,944 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 44 treesize of output 42 [2024-11-13 14:02:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 14:02:14,086 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:14,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674366289] [2024-11-13 14:02:14,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674366289] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:14,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:14,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2024-11-13 14:02:14,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388005472] [2024-11-13 14:02:14,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:14,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:02:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:14,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:02:14,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=243, Unknown=9, NotChecked=102, Total=420 [2024-11-13 14:02:14,088 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:15,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:15,259 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2024-11-13 14:02:15,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:02:15,260 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 14:02:15,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:15,261 INFO L225 Difference]: With dead ends: 111 [2024-11-13 14:02:15,261 INFO L226 Difference]: Without dead ends: 111 [2024-11-13 14:02:15,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=161, Invalid=538, Unknown=15, NotChecked=156, Total=870 [2024-11-13 14:02:15,262 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 108 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 17 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 191 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:15,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 316 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 297 Invalid, 9 Unknown, 191 Unchecked, 0.7s Time] [2024-11-13 14:02:15,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-13 14:02:15,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2024-11-13 14:02:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 97 states have (on average 1.2989690721649485) internal successors, (126), 109 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) [2024-11-13 14:02:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2024-11-13 14:02:15,266 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 27 [2024-11-13 14:02:15,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:15,266 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2024-11-13 14:02:15,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2024-11-13 14:02:15,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:02:15,267 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:15,267 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:15,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 14:02:15,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:15,471 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:15,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash 203672035, now seen corresponding path program 1 times [2024-11-13 14:02:15,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:15,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925850062] [2024-11-13 14:02:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:15,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:15,474 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:15,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:02:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:15,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 14:02:15,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:15,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:02:15,695 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:15,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:15,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:02:15,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:02:15,920 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:02:15,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 57 [2024-11-13 14:02:15,927 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 [2024-11-13 14:02:15,932 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 32 treesize of output 19 [2024-11-13 14:02:16,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-13 14:02:16,096 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 19 treesize of output 11 [2024-11-13 14:02:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:16,180 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:16,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 57 [2024-11-13 14:02:16,304 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_265 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.base|)) (forall ((v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_264) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|)))) is different from false [2024-11-13 14:02:16,336 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_265 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_265) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem6#1.base|)) (forall ((v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_264) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem6#1.offset|)))) is different from false [2024-11-13 14:02:16,354 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)) (.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_265 (Array (_ BitVec 32) (_ BitVec 32)))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_265) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (forall ((v_ArrVal_264 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_264) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse2)))))) is different from false [2024-11-13 14:02:16,364 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:16,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 14:02:16,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:16,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 31 [2024-11-13 14:02:16,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:02:16,412 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-13 14:02:16,412 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 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 14:02:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 14:02:16,624 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:16,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925850062] [2024-11-13 14:02:16,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925850062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:16,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:16,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2024-11-13 14:02:16,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137572658] [2024-11-13 14:02:16,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:16,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:02:16,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:16,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:02:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=268, Unknown=3, NotChecked=102, Total=420 [2024-11-13 14:02:16,626 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:17,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:17,751 INFO L93 Difference]: Finished difference Result 122 states and 136 transitions. [2024-11-13 14:02:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:02:17,751 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-13 14:02:17,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:17,752 INFO L225 Difference]: With dead ends: 122 [2024-11-13 14:02:17,752 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 14:02:17,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=594, Unknown=3, NotChecked=156, Total=870 [2024-11-13 14:02:17,753 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 184 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:17,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 429 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 375 Invalid, 0 Unknown, 275 Unchecked, 0.7s Time] [2024-11-13 14:02:17,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 14:02:17,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 104. [2024-11-13 14:02:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 91 states have (on average 1.2747252747252746) internal successors, (116), 103 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:17,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 116 transitions. [2024-11-13 14:02:17,757 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 116 transitions. Word has length 33 [2024-11-13 14:02:17,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:17,757 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 116 transitions. [2024-11-13 14:02:17,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.6666666666666665) internal successors, (56), 21 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:17,758 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 116 transitions. [2024-11-13 14:02:17,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:02:17,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:17,759 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:17,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:02:17,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:17,959 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:17,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1328188796, now seen corresponding path program 1 times [2024-11-13 14:02:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402489941] [2024-11-13 14:02:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:17,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:17,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:17,963 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:17,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:02:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:18,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:02:18,095 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:02:18,185 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:02:18,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:18,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402489941] [2024-11-13 14:02:18,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402489941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:02:18,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:02:18,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:02:18,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740974036] [2024-11-13 14:02:18,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:02:18,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:02:18,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:02:18,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:02:18,187 INFO L87 Difference]: Start difference. First operand 104 states and 116 transitions. Second operand has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 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) [2024-11-13 14:02:18,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:18,415 INFO L93 Difference]: Finished difference Result 105 states and 117 transitions. [2024-11-13 14:02:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:02:18,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 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 34 [2024-11-13 14:02:18,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:18,416 INFO L225 Difference]: With dead ends: 105 [2024-11-13 14:02:18,416 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 14:02:18,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:02:18,417 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 32 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:18,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 114 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:02:18,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 14:02:18,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 14:02:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 92 states have (on average 1.2717391304347827) internal successors, (117), 104 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) [2024-11-13 14:02:18,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2024-11-13 14:02:18,421 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 34 [2024-11-13 14:02:18,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:18,421 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2024-11-13 14:02:18,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.0) internal successors, (32), 5 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) [2024-11-13 14:02:18,422 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2024-11-13 14:02:18,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:02:18,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:18,423 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:18,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:02:18,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:18,624 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:18,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1326771749, now seen corresponding path program 1 times [2024-11-13 14:02:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199921727] [2024-11-13 14:02:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:18,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:18,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:18,627 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:18,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:02:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:18,725 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:02:18,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:18,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:18,926 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 14:02:18,927 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 17 treesize of output 16 [2024-11-13 14:02:18,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:18,947 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:18,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199921727] [2024-11-13 14:02:18,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199921727] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:18,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:18,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2024-11-13 14:02:18,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843521413] [2024-11-13 14:02:18,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:18,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:02:18,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:18,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:02:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:02:18,948 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:19,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:19,454 INFO L93 Difference]: Finished difference Result 114 states and 126 transitions. [2024-11-13 14:02:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:02:19,455 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2024-11-13 14:02:19,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:19,456 INFO L225 Difference]: With dead ends: 114 [2024-11-13 14:02:19,456 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 14:02:19,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:02:19,456 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 83 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:19,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 307 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:02:19,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 14:02:19,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-13 14:02:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 90 states have (on average 1.2666666666666666) internal successors, (114), 102 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) [2024-11-13 14:02:19,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2024-11-13 14:02:19,461 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 34 [2024-11-13 14:02:19,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:19,461 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2024-11-13 14:02:19,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:19,462 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2024-11-13 14:02:19,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:02:19,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:19,462 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:19,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:02:19,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:19,663 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:19,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:19,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1775820132, now seen corresponding path program 1 times [2024-11-13 14:02:19,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:19,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802131642] [2024-11-13 14:02:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:19,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:19,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:19,666 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:19,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:02:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:19,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:02:19,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:19,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:19,874 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:19,936 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 14:02:19,936 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 16 treesize of output 15 [2024-11-13 14:02:19,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:19,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:19,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802131642] [2024-11-13 14:02:19,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802131642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:19,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:19,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2024-11-13 14:02:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512118763] [2024-11-13 14:02:19,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:19,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:02:19,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:19,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:02:19,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:02:19,953 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:20,197 INFO L93 Difference]: Finished difference Result 102 states and 113 transitions. [2024-11-13 14:02:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:02:20,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 14:02:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:20,198 INFO L225 Difference]: With dead ends: 102 [2024-11-13 14:02:20,198 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 14:02:20,198 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:02:20,198 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 69 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:20,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 99 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:02:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 14:02:20,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-13 14:02:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 90 states have (on average 1.2555555555555555) internal successors, (113), 101 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 113 transitions. [2024-11-13 14:02:20,202 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 113 transitions. Word has length 35 [2024-11-13 14:02:20,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:20,202 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 113 transitions. [2024-11-13 14:02:20,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 113 transitions. [2024-11-13 14:02:20,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:02:20,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:20,203 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:20,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:02:20,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:20,403 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:20,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash 784150893, now seen corresponding path program 1 times [2024-11-13 14:02:20,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:20,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427169536] [2024-11-13 14:02:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:20,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:20,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:20,406 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:20,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:02:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:20,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:02:20,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:20,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:02:20,648 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:20,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:20,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:02:20,821 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:02:20,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-13 14:02:21,106 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 27 treesize of output 15 [2024-11-13 14:02:21,197 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 16 treesize of output 13 [2024-11-13 14:02:21,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:21,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:21,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:21,517 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 33 treesize of output 39 [2024-11-13 14:02:22,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:22,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2024-11-13 14:02:22,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:22,025 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 38 [2024-11-13 14:02:22,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2024-11-13 14:02:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:30,328 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427169536] [2024-11-13 14:02:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427169536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:30,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 28 [2024-11-13 14:02:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019008748] [2024-11-13 14:02:30,328 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:30,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:02:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:02:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=702, Unknown=18, NotChecked=0, Total=812 [2024-11-13 14:02:30,330 INFO L87 Difference]: Start difference. First operand 102 states and 113 transitions. Second operand has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:32,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:32,155 INFO L93 Difference]: Finished difference Result 135 states and 151 transitions. [2024-11-13 14:02:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:02:32,156 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 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 [2024-11-13 14:02:32,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:32,157 INFO L225 Difference]: With dead ends: 135 [2024-11-13 14:02:32,157 INFO L226 Difference]: Without dead ends: 135 [2024-11-13 14:02:32,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=205, Invalid=1334, Unknown=21, NotChecked=0, Total=1560 [2024-11-13 14:02:32,158 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 200 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:32,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 515 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 14:02:32,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-13 14:02:32,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 111. [2024-11-13 14:02:32,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 110 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) [2024-11-13 14:02:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2024-11-13 14:02:32,161 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 36 [2024-11-13 14:02:32,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:32,161 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2024-11-13 14:02:32,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.357142857142857) internal successors, (66), 29 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:32,162 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2024-11-13 14:02:32,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:02:32,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:32,163 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:32,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:02:32,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:32,363 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:32,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:32,364 INFO L85 PathProgramCache]: Analyzing trace with hash 784150894, now seen corresponding path program 1 times [2024-11-13 14:02:32,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:32,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360682434] [2024-11-13 14:02:32,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:32,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:32,366 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:32,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:02:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:32,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:02:32,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:32,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 14:02:32,784 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 32 treesize of output 16 [2024-11-13 14:02:32,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:32,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:33,135 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:33,135 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 46 treesize of output 50 [2024-11-13 14:02:37,548 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:37,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 52 [2024-11-13 14:02:37,593 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 14:02:37,594 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 30 [2024-11-13 14:02:37,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:02:37,676 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:37,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360682434] [2024-11-13 14:02:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360682434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:37,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:37,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2024-11-13 14:02:37,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840230796] [2024-11-13 14:02:37,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:37,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:02:37,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:02:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:02:37,677 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:38,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:02:38,986 INFO L93 Difference]: Finished difference Result 130 states and 147 transitions. [2024-11-13 14:02:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:02:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 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 [2024-11-13 14:02:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:02:38,988 INFO L225 Difference]: With dead ends: 130 [2024-11-13 14:02:38,988 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 14:02:38,989 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:02:38,990 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 176 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:02:38,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 291 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:02:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 14:02:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2024-11-13 14:02:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 101 states have (on average 1.2376237623762376) internal successors, (125), 112 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 125 transitions. [2024-11-13 14:02:38,994 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 125 transitions. Word has length 36 [2024-11-13 14:02:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:02:38,994 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 125 transitions. [2024-11-13 14:02:38,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 125 transitions. [2024-11-13 14:02:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:02:38,995 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:02:38,995 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:02:39,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:02:39,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:39,196 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:02:39,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:02:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1279295937, now seen corresponding path program 1 times [2024-11-13 14:02:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:02:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030258873] [2024-11-13 14:02:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:02:39,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:02:39,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:02:39,199 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:02:39,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:02:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:02:39,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:02:39,315 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:02:39,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:02:39,460 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:39,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:39,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:02:39,697 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-13 14:02:39,698 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 24 treesize of output 17 [2024-11-13 14:02:39,743 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:02:39,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:02:39,814 INFO L349 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2024-11-13 14:02:39,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 15 [2024-11-13 14:02:40,068 INFO L349 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2024-11-13 14:02:40,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 61 [2024-11-13 14:02:40,082 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 20 treesize of output 12 [2024-11-13 14:02:40,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 14:02:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:02:40,255 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:02:40,490 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_428 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) v_ArrVal_428) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))))))) is different from false [2024-11-13 14:02:40,517 INFO L349 Elim1Store]: treesize reduction 7, result has 75.9 percent of original size [2024-11-13 14:02:40,518 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 35 treesize of output 34 [2024-11-13 14:02:44,837 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:44,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2024-11-13 14:02:44,853 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.offset| (_ BitVec 32)) (v_ArrVal_428 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_8 (bvadd |ULTIMATE.start_main_~p~0#1.offset| (_ bv4 32))))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_8) .cse0 v_ArrVal_428) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) |c_ULTIMATE.start_main_~p~0#1.base|)))) is different from false [2024-11-13 14:02:44,905 WARN L851 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~p~0#1.offset| (_ BitVec 32)) (v_ArrVal_428 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_8 (bvadd |ULTIMATE.start_main_~p~0#1.offset| (_ bv4 32))))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= |c_ULTIMATE.start_main_#t~mem6#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_8) .cse0 v_ArrVal_428) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))))))) is different from false [2024-11-13 14:02:44,968 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.offset_104| (_ BitVec 32)) (v_ArrVal_428 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_8 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_8 (bvadd (_ bv4 32) |v_ULTIMATE.start_main_~p~0#1.offset_104|)))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_8) .cse0 v_ArrVal_428) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) .cse1))))) is different from false [2024-11-13 14:02:44,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:44,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 14:02:45,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:45,015 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 86 treesize of output 85 [2024-11-13 14:02:45,025 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 70 treesize of output 62 [2024-11-13 14:02:45,047 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:02:45,047 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 72 treesize of output 56 [2024-11-13 14:02:45,077 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 14:02:45,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 14 [2024-11-13 14:02:52,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-13 14:02:52,441 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:02:52,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030258873] [2024-11-13 14:02:52,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030258873] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:02:52,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:02:52,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28 [2024-11-13 14:02:52,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844276071] [2024-11-13 14:02:52,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:02:52,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:02:52,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:02:52,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:02:52,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=515, Unknown=15, NotChecked=196, Total=812 [2024-11-13 14:02:52,443 INFO L87 Difference]: Start difference. First operand 113 states and 125 transitions. Second operand has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:02:57,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:03:01,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:03:06,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 14:03:10,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 14:03:11,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:11,814 INFO L93 Difference]: Finished difference Result 192 states and 219 transitions. [2024-11-13 14:03:11,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:03:11,815 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 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 [2024-11-13 14:03:11,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:11,815 INFO L225 Difference]: With dead ends: 192 [2024-11-13 14:03:11,816 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:03:11,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=252, Invalid=1309, Unknown=15, NotChecked=316, Total=1892 [2024-11-13 14:03:11,817 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 221 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 46 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 563 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:11,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 596 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 659 Invalid, 6 Unknown, 563 Unchecked, 18.2s Time] [2024-11-13 14:03:11,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:03:11,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 142. [2024-11-13 14:03:11,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 141 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 158 transitions. [2024-11-13 14:03:11,824 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 158 transitions. Word has length 36 [2024-11-13 14:03:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:11,824 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 158 transitions. [2024-11-13 14:03:11,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.4642857142857144) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 158 transitions. [2024-11-13 14:03:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:03:11,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:11,825 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:11,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:03:12,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:12,029 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:03:12,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1279295936, now seen corresponding path program 1 times [2024-11-13 14:03:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:03:12,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591495448] [2024-11-13 14:03:12,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:12,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:12,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:12,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:12,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:03:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:12,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:03:12,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:12,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:03:12,386 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:03:12,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:03:12,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:03:12,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:03:12,867 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-13 14:03:12,867 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 24 treesize of output 17 [2024-11-13 14:03:12,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:03:12,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:03:12,970 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:03:12,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:03:13,150 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-13 14:03:13,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 14:03:13,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:03:13,178 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 16 treesize of output 11 [2024-11-13 14:03:13,588 INFO L349 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2024-11-13 14:03:13,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 59 [2024-11-13 14:03:13,596 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 20 treesize of output 11 [2024-11-13 14:03:13,608 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 12 [2024-11-13 14:03:13,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 14:03:13,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:03:14,014 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:03:14,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:14,905 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_475 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_474 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_474) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_475) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))) (forall ((v_ArrVal_474 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_474) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))))) is different from false [2024-11-13 14:03:14,939 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_475 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_474 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_474) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_475) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (forall ((v_ArrVal_474 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_474) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))) is different from false [2024-11-13 14:03:14,989 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:14,989 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 77 treesize of output 81 [2024-11-13 14:03:16,628 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:16,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2024-11-13 14:03:17,392 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (and (forall ((|v_ULTIMATE.start_main_~t~0#1.base_44| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_44|))) (forall ((v_prenex_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_2 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_prenex_1) |v_ULTIMATE.start_main_~t~0#1.base_44| v_prenex_2) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_#t~mem6#1.offset|))))) (forall ((v_ArrVal_475 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_1 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_2 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_10 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_10 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem6#1.offset|)))) (or (= |c_ULTIMATE.start_main_#t~mem6#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_10) .cse1 v_ArrVal_475) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (not (= (_ bv0 1) (select |c_#valid| .cse1))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_prenex_1) .cse1 v_prenex_2) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))) (forall ((|v_ULTIMATE.start_main_~t~0#1.base_44| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_44|))) (forall ((v_ArrVal_471 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_474 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_471) |v_ULTIMATE.start_main_~t~0#1.base_44| v_ArrVal_474) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))))) is different from false [2024-11-13 14:03:18,239 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 164 treesize of output 135 [2024-11-13 14:03:18,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 125 [2024-11-13 14:03:18,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,365 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 481 treesize of output 444 [2024-11-13 14:03:18,391 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 264 treesize of output 256 [2024-11-13 14:03:18,474 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,474 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 323 treesize of output 322 [2024-11-13 14:03:18,527 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,528 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 306 treesize of output 275 [2024-11-13 14:03:18,546 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 266 treesize of output 258 [2024-11-13 14:03:18,584 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 258 treesize of output 254 [2024-11-13 14:03:18,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:18,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 263 treesize of output 315 [2024-11-13 14:03:18,891 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 248 treesize of output 244 [2024-11-13 14:03:18,913 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 244 treesize of output 236 [2024-11-13 14:03:18,935 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 236 treesize of output 228 [2024-11-13 14:03:18,957 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 228 treesize of output 212 [2024-11-13 14:03:29,812 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 14:03:29,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:03:29,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591495448] [2024-11-13 14:03:29,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591495448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:29,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:03:29,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 30 [2024-11-13 14:03:29,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63472016] [2024-11-13 14:03:29,813 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:29,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 14:03:29,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:03:29,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 14:03:29,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=631, Unknown=42, NotChecked=162, Total=930 [2024-11-13 14:03:29,814 INFO L87 Difference]: Start difference. First operand 142 states and 158 transitions. Second operand has 31 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:38,511 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2024-11-13 14:03:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 14:03:38,512 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-13 14:03:38,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:38,513 INFO L225 Difference]: With dead ends: 192 [2024-11-13 14:03:38,513 INFO L226 Difference]: Without dead ends: 192 [2024-11-13 14:03:38,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=348, Invalid=2156, Unknown=58, NotChecked=300, Total=2862 [2024-11-13 14:03:38,514 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 377 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 50 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 464 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:38,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 817 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 997 Invalid, 11 Unknown, 464 Unchecked, 5.0s Time] [2024-11-13 14:03:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-13 14:03:38,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 149. [2024-11-13 14:03:38,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 137 states have (on average 1.2262773722627738) internal successors, (168), 148 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:38,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 168 transitions. [2024-11-13 14:03:38,519 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 168 transitions. Word has length 36 [2024-11-13 14:03:38,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:38,519 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 168 transitions. [2024-11-13 14:03:38,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 31 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:38,519 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 168 transitions. [2024-11-13 14:03:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:03:38,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:38,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:38,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:03:38,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:38,721 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:03:38,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:38,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1949733999, now seen corresponding path program 1 times [2024-11-13 14:03:38,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:03:38,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155351091] [2024-11-13 14:03:38,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:38,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:38,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:38,723 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:38,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:03:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:38,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:03:38,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:39,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-13 14:03:39,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 14:03:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:39,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:39,584 INFO L349 Elim1Store]: treesize reduction 4, result has 82.6 percent of original size [2024-11-13 14:03:39,585 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 28 treesize of output 27 [2024-11-13 14:03:39,767 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-11-13 14:03:39,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:03:39,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:03:39,785 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 15 treesize of output 1 [2024-11-13 14:03:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:39,883 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:03:39,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155351091] [2024-11-13 14:03:39,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155351091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:39,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:03:39,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2024-11-13 14:03:39,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223683920] [2024-11-13 14:03:39,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:39,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:03:39,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:03:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:03:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:03:39,884 INFO L87 Difference]: Start difference. First operand 149 states and 168 transitions. Second operand has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:41,204 INFO L93 Difference]: Finished difference Result 175 states and 203 transitions. [2024-11-13 14:03:41,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:03:41,205 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 14:03:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:41,205 INFO L225 Difference]: With dead ends: 175 [2024-11-13 14:03:41,206 INFO L226 Difference]: Without dead ends: 175 [2024-11-13 14:03:41,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:03:41,206 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:41,206 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 471 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:03:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-13 14:03:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 163. [2024-11-13 14:03:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 151 states have (on average 1.2317880794701987) internal successors, (186), 162 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 186 transitions. [2024-11-13 14:03:41,210 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 186 transitions. Word has length 38 [2024-11-13 14:03:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:41,210 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 186 transitions. [2024-11-13 14:03:41,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 18 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 186 transitions. [2024-11-13 14:03:41,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:03:41,211 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:41,211 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:41,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:03:41,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:41,411 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:03:41,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:41,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1949733948, now seen corresponding path program 1 times [2024-11-13 14:03:41,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:03:41,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003901044] [2024-11-13 14:03:41,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:41,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:41,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:41,414 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:41,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:03:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:41,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 14:03:41,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:41,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:03:41,707 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:03:41,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:03:41,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:03:41,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:03:41,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2024-11-13 14:03:41,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:03:42,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:42,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:42,468 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_526 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_526) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))))) is different from false [2024-11-13 14:03:42,576 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:42,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 14:03:42,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:42,604 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 36 treesize of output 35 [2024-11-13 14:03:42,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:03:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:43,093 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:03:43,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003901044] [2024-11-13 14:03:43,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003901044] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:43,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:03:43,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-13 14:03:43,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107962602] [2024-11-13 14:03:43,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:43,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:03:43,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:03:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:03:43,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=275, Unknown=12, NotChecked=34, Total=380 [2024-11-13 14:03:43,094 INFO L87 Difference]: Start difference. First operand 163 states and 186 transitions. Second operand has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:44,288 INFO L93 Difference]: Finished difference Result 169 states and 193 transitions. [2024-11-13 14:03:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:03:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-13 14:03:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:44,289 INFO L225 Difference]: With dead ends: 169 [2024-11-13 14:03:44,289 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 14:03:44,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=472, Unknown=14, NotChecked=46, Total=650 [2024-11-13 14:03:44,290 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 239 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:44,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 348 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 299 Invalid, 0 Unknown, 101 Unchecked, 0.9s Time] [2024-11-13 14:03:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 14:03:44,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 165. [2024-11-13 14:03:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 153 states have (on average 1.2287581699346406) internal successors, (188), 164 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:44,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 188 transitions. [2024-11-13 14:03:44,295 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 188 transitions. Word has length 38 [2024-11-13 14:03:44,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:44,296 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 188 transitions. [2024-11-13 14:03:44,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.473684210526316) internal successors, (66), 20 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 188 transitions. [2024-11-13 14:03:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:03:44,296 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:44,296 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:44,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 14:03:44,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:44,497 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:03:44,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash 312210403, now seen corresponding path program 1 times [2024-11-13 14:03:44,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:03:44,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912526227] [2024-11-13 14:03:44,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:44,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:44,499 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:44,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:03:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:44,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:03:44,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:44,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:03:44,805 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:03:44,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:03:44,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:03:45,130 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:03:45,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2024-11-13 14:03:45,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 14:03:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:45,522 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:45,933 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_553 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)) v_ArrVal_553) |c_ULTIMATE.start_main_~a~0#1.base|) (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) |c_#StackHeapBarrier|)) is different from false [2024-11-13 14:03:45,946 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:45,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 14:03:45,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:45,975 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 36 treesize of output 35 [2024-11-13 14:03:45,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:03:46,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:03:46,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:03:46,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912526227] [2024-11-13 14:03:46,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912526227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:03:46,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:03:46,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2024-11-13 14:03:46,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322805238] [2024-11-13 14:03:46,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:03:46,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:03:46,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:03:46,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:03:46,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=272, Unknown=18, NotChecked=34, Total=380 [2024-11-13 14:03:46,526 INFO L87 Difference]: Start difference. First operand 165 states and 188 transitions. Second operand has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:03:48,378 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2024-11-13 14:03:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:03:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 14:03:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:03:48,379 INFO L225 Difference]: With dead ends: 170 [2024-11-13 14:03:48,379 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 14:03:48,379 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=432, Unknown=23, NotChecked=44, Total=600 [2024-11-13 14:03:48,380 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 206 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:03:48,380 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 375 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 416 Invalid, 0 Unknown, 114 Unchecked, 1.5s Time] [2024-11-13 14:03:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 14:03:48,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 166. [2024-11-13 14:03:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 154 states have (on average 1.2272727272727273) internal successors, (189), 165 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) [2024-11-13 14:03:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 189 transitions. [2024-11-13 14:03:48,384 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 189 transitions. Word has length 39 [2024-11-13 14:03:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:03:48,384 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 189 transitions. [2024-11-13 14:03:48,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.526315789473684) internal successors, (67), 20 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:03:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 189 transitions. [2024-11-13 14:03:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 14:03:48,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:03:48,385 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:03:48,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:03:48,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:48,586 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:03:48,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:03:48,586 INFO L85 PathProgramCache]: Analyzing trace with hash -613508271, now seen corresponding path program 1 times [2024-11-13 14:03:48,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:03:48,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140220227] [2024-11-13 14:03:48,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:03:48,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:03:48,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:03:48,588 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:03:48,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:03:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:03:48,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:03:48,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:03:49,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:03:49,320 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 14:03:49,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 45 [2024-11-13 14:03:50,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-13 14:03:50,275 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~tmp~0#1.base_27| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~tmp~0#1.base_27| (_ bv1 1)) |c_ULTIMATE.start_main_~p~0#1.base|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |c_ULTIMATE.start_main_~p~0#1.base| (_ bv1 1)) |v_ULTIMATE.start_main_~tmp~0#1.base_27| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~tmp~0#1.base_27|)))) is different from true [2024-11-13 14:03:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2024-11-13 14:03:50,437 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:03:56,040 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:56,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 52 [2024-11-13 14:03:56,064 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:03:56,064 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 96 treesize of output 89 [2024-11-13 14:03:56,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-13 14:05:18,540 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| (_ bv0 1)))) (and (or (forall ((v_arrayElimCell_150 (_ BitVec 32)) (v_ArrVal_579 (_ BitVec 1)) (v_antiDerIndex_entry0_1 (_ BitVec 32))) (or (= (_ bv0 1) (bvadd (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store .cse0 v_arrayElimCell_150 (_ bv0 1)) v_antiDerIndex_entry0_1))) (not (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_579) v_arrayElimCell_150)))))) (not (= (_ bv0 1) (select |c_#valid| |c_ULTIMATE.start_main_~a~0#1.base|)))) (forall ((|v_ULTIMATE.start_main_~t~0#1.base_57| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~a~0#1.base| |v_ULTIMATE.start_main_~t~0#1.base_57|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~t~0#1.base_57|))) (forall ((v_antiDerIndex_entry0_1 (_ BitVec 32))) (= (_ bv0 1) (bvadd (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store .cse0 |v_ULTIMATE.start_main_~t~0#1.base_57| (_ bv0 1)) v_antiDerIndex_entry0_1)))))))) is different from false [2024-11-13 14:05:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:05:18,597 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:05:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140220227] [2024-11-13 14:05:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140220227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:05:18,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:05:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2024-11-13 14:05:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931957222] [2024-11-13 14:05:18,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:05:18,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:05:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:05:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:05:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=849, Unknown=32, NotChecked=122, Total=1122 [2024-11-13 14:05:18,599 INFO L87 Difference]: Start difference. First operand 166 states and 189 transitions. Second operand has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:05:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:05:30,554 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2024-11-13 14:05:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 14:05:30,555 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-13 14:05:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:05:30,556 INFO L225 Difference]: With dead ends: 168 [2024-11-13 14:05:30,556 INFO L226 Difference]: Without dead ends: 143 [2024-11-13 14:05:30,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 96.1s TimeCoverageRelationStatistics Valid=156, Invalid=1078, Unknown=34, NotChecked=138, Total=1406 [2024-11-13 14:05:30,557 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 29 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:05:30,557 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 654 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 782 Invalid, 2 Unknown, 163 Unchecked, 3.4s Time] [2024-11-13 14:05:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-13 14:05:30,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-11-13 14:05:30,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 142 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) [2024-11-13 14:05:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2024-11-13 14:05:30,562 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 41 [2024-11-13 14:05:30,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:05:30,562 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2024-11-13 14:05:30,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 34 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:05:30,562 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2024-11-13 14:05:30,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:05:30,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:05:30,563 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-13 14:05:30,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 14:05:30,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:05:30,764 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:05:30,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:05:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1542856970, now seen corresponding path program 1 times [2024-11-13 14:05:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:05:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244974964] [2024-11-13 14:05:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:05:30,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:05:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:05:30,767 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:05:30,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:05:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:05:30,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:05:30,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:05:30,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:05:31,223 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:05:31,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 14:05:31,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:05:31,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:05:31,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:05:31,887 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-13 14:05:31,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2024-11-13 14:05:31,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:05:31,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:05:32,140 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-13 14:05:32,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-13 14:05:32,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 14:05:32,386 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:05:32,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 14:05:32,447 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-13 14:05:32,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 23 [2024-11-13 14:05:32,970 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2024-11-13 14:05:32,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 112 treesize of output 77 [2024-11-13 14:05:32,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 15 [2024-11-13 14:05:33,012 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 32 treesize of output 11 [2024-11-13 14:05:33,457 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:05:33,457 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 26 [2024-11-13 14:05:33,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:05:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:05:33,701 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:05:34,088 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv2 32) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_633) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2024-11-13 14:05:34,129 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv2 32) (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_633) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) is different from false [2024-11-13 14:05:34,151 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv2 32) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (select (store |c_#memory_int#1| .cse0 v_ArrVal_633) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) is different from false [2024-11-13 14:05:34,184 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_632 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_633 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (or (= (_ bv2 32) (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_632) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_633) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_629) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))) (not (= v_ArrVal_632 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0 (select v_ArrVal_632 .cse0))))))) is different from false [2024-11-13 14:05:34,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:34,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 46 [2024-11-13 14:05:34,647 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:34,647 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 540 treesize of output 526 [2024-11-13 14:05:34,672 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 108 treesize of output 72 [2024-11-13 14:05:34,785 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 21 treesize of output 3 [2024-11-13 14:05:34,806 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 325 [2024-11-13 14:05:34,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 358 treesize of output 322 [2024-11-13 14:05:34,923 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 33 treesize of output 25 [2024-11-13 14:05:34,958 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 30 treesize of output 22 [2024-11-13 14:05:34,990 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (and (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_175 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_629) v_arrayElimCell_175 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_~p~0#1.offset|) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_175))))) (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_174 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_174))) (not (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_629) v_arrayElimCell_174 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) .cse1)))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select v_arrayElimArr_16 .cse1))) (or (not (= (_ bv0 1) (select |c_#valid| .cse2))) (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_16) .cse2 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) .cse2)))))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select v_arrayElimArr_16 .cse1))) (or (not (= (_ bv0 1) (select |c_#valid| .cse3))) (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~p~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_16) .cse3 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0)))))))) is different from false [2024-11-13 14:05:35,329 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem6#1.offset|))) (and (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_175 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_629) v_arrayElimCell_175 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem6#1.offset|) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_175))))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_16 .cse2))) (or (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem6#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_16) .cse1 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (not (= (_ bv0 1) (select |c_#valid| .cse1)))))) (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_174 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_174))) (not (= .cse2 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_629) v_arrayElimCell_174 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select v_arrayElimArr_16 .cse2))) (or (not (= (_ bv0 1) (select |c_#valid| .cse3))) (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= .cse3 (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_16) .cse3 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))))))))) is different from false [2024-11-13 14:05:35,430 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (let ((.cse4 (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse6))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse6)) (.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32))) (.cse3 (bvadd (_ bv4 32) .cse4))) (and (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_16 .cse3))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= .cse0 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_16) .cse0 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))))) (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_175 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_629) v_arrayElimCell_175 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse4) (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_175))))) (forall ((v_ArrVal_629 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_174 (_ BitVec 32)) (v_ArrVal_635 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| v_arrayElimCell_174))) (not (= (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_629) v_arrayElimCell_174 v_ArrVal_635) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) .cse3)))) (forall ((v_arrayElimArr_16 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select v_arrayElimArr_16 .cse3))) (or (forall ((v_ArrVal_634 (Array (_ BitVec 32) (_ BitVec 32)))) (= .cse1 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse1 v_arrayElimArr_16) .cse5 v_ArrVal_634) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (not (= (_ bv0 1) (select |c_#valid| .cse5)))))))))) is different from false [2024-11-13 14:05:35,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:35,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2024-11-13 14:05:35,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:35,539 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 205 treesize of output 198 [2024-11-13 14:05:35,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:35,595 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 93 treesize of output 69 [2024-11-13 14:05:35,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2024-11-13 14:05:35,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:35,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2024-11-13 14:05:35,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:35,841 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 165 treesize of output 158 [2024-11-13 14:05:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2024-11-13 14:05:35,864 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 62 treesize of output 54 [2024-11-13 14:05:36,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:36,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2024-11-13 14:05:36,024 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:05:36,057 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:36,057 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 36 treesize of output 35 [2024-11-13 14:05:36,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:05:36,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:36,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2024-11-13 14:05:36,118 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:05:36,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:36,151 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 36 treesize of output 35 [2024-11-13 14:05:36,196 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:05:36,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-13 14:05:54,084 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2024-11-13 14:05:54,084 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:05:54,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244974964] [2024-11-13 14:05:54,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244974964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:05:54,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:05:54,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 33 [2024-11-13 14:05:54,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456106429] [2024-11-13 14:05:54,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:05:54,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:05:54,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:05:54,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:05:54,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=566, Unknown=9, NotChecked=378, Total=1056 [2024-11-13 14:05:54,086 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:05:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:05:58,550 INFO L93 Difference]: Finished difference Result 208 states and 241 transitions. [2024-11-13 14:05:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:05:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 14:05:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:05:58,552 INFO L225 Difference]: With dead ends: 208 [2024-11-13 14:05:58,552 INFO L226 Difference]: Without dead ends: 208 [2024-11-13 14:05:58,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=200, Invalid=1079, Unknown=9, NotChecked=518, Total=1806 [2024-11-13 14:05:58,553 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 223 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1054 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:05:58,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 659 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 617 Invalid, 0 Unknown, 1054 Unchecked, 2.9s Time] [2024-11-13 14:05:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-13 14:05:58,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2024-11-13 14:05:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 145 states have (on average 1.2482758620689656) internal successors, (181), 156 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) [2024-11-13 14:05:58,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2024-11-13 14:05:58,558 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 43 [2024-11-13 14:05:58,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:05:58,559 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2024-11-13 14:05:58,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.4545454545454546) internal successors, (81), 33 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:05:58,559 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2024-11-13 14:05:58,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:05:58,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:05:58,560 INFO L215 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] [2024-11-13 14:05:58,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:05:58,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:05:58,761 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2024-11-13 14:05:58,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:05:58,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1542836212, now seen corresponding path program 1 times [2024-11-13 14:05:58,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:05:58,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72058758] [2024-11-13 14:05:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:05:58,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:05:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:05:58,765 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:05:58,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd1645d3-3717-4c61-a839-4205e571c03c/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:05:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:05:58,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:05:58,895 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:05:58,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:05:59,138 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:05:59,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-13 14:05:59,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:05:59,292 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:05:59,760 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-13 14:05:59,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 26 [2024-11-13 14:05:59,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:05:59,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:05:59,960 INFO L349 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2024-11-13 14:05:59,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2024-11-13 14:06:00,266 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:06:00,266 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 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 14:06:00,323 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-13 14:06:00,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 30 [2024-11-13 14:06:01,188 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2024-11-13 14:06:01,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 103 treesize of output 74 [2024-11-13 14:06:01,225 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 32 treesize of output 11 [2024-11-13 14:06:01,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 14:06:02,458 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:06:02,459 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 33 [2024-11-13 14:06:02,740 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:02,740 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:03,263 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_683))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_684) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1)))))))) is different from false [2024-11-13 14:06:03,623 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (let ((.cse0 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|) |c_ULTIMATE.start_main_~t~0#1.base|)) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_683))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_681) |c_ULTIMATE.start_main_~t~0#1.base| v_ArrVal_684) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))))) (_ bv1 1)))) is different from false [2024-11-13 14:06:08,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:08,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2024-11-13 14:06:08,322 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_21 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|)))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| .cse0 (_ bv1 1)) (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| v_arrayElimArr_21) .cse0 v_ArrVal_683))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_681) .cse0 v_ArrVal_684) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) (_ bv4 32)))))))))) is different from false [2024-11-13 14:06:08,450 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_21 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_#t~mem6#1.offset|)))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| .cse0 (_ bv1 1)) (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem6#1.base| v_arrayElimArr_21) .cse0 v_ArrVal_683))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem6#1.base| v_ArrVal_681) .cse0 v_ArrVal_684) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2) (_ bv4 32)))))))))) is different from false [2024-11-13 14:06:08,513 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_681 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_683 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimArr_21 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~p~0#1.offset|))) (let ((.cse0 (select v_arrayElimArr_21 (bvadd (_ bv4 32) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse4))))) (or (not (= (_ bv0 1) (select |c_#valid| .cse0))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| .cse0 (_ bv1 1)) (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse4)) (.cse2 (bvadd |c_ULTIMATE.start_main_~a~0#1.offset| (_ bv4 32)))) (select (let ((.cse1 (store (store |c_#memory_$Pointer$#1.base| .cse3 v_arrayElimArr_21) .cse0 v_ArrVal_683))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse3 v_ArrVal_681) .cse0 v_ArrVal_684) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))))))))))) is different from false [2024-11-13 14:06:08,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:08,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 93 [2024-11-13 14:06:08,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:08,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 73 [2024-11-13 14:06:08,611 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:08,611 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 258 treesize of output 257 [2024-11-13 14:06:13,165 INFO L349 Elim1Store]: treesize reduction 390, result has 58.3 percent of original size [2024-11-13 14:06:13,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 55 case distinctions, treesize of input 3084 treesize of output 3267 [2024-11-13 14:06:13,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:13,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 810 treesize of output 674 [2024-11-13 14:06:14,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:06:14,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 592 treesize of output 512 [2024-11-13 14:06:14,178 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 267 treesize of output 191 [2024-11-13 14:06:14,256 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 247 treesize of output 171