./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:07:22,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:07:22,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 02:07:22,934 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:07:22,935 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:07:22,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:07:22,982 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:07:22,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:07:22,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:07:22,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:07:22,983 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:07:22,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:07:22,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:07:22,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:07:22,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:07:22,984 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:07:22,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:07:22,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:07:22,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:07:22,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:07:22,987 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:07:22,987 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:07:22,988 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:07:22,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:22,989 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:07:22,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:22,990 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:07:22,990 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:07:22,990 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:07:22,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:07:22,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:07:22,991 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:07:22,991 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:07:22,991 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:07:22,991 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_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2024-11-28 02:07:23,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:07:23,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:07:23,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:07:23,378 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:07:23,378 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:07:23,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-11-28 02:07:26,411 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/e929bd640/904604e8fc75456398751ac67c6bd919/FLAGefcef615b [2024-11-28 02:07:26,953 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:07:26,957 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-11-28 02:07:26,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/e929bd640/904604e8fc75456398751ac67c6bd919/FLAGefcef615b [2024-11-28 02:07:27,014 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/e929bd640/904604e8fc75456398751ac67c6bd919 [2024-11-28 02:07:27,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:07:27,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:07:27,022 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:27,022 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:07:27,027 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:07:27,029 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:27" (1/1) ... [2024-11-28 02:07:27,031 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7853d252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:27, skipping insertion in model container [2024-11-28 02:07:27,032 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:07:27" (1/1) ... [2024-11-28 02:07:27,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:07:27,778 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,850 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,858 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,869 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,884 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,959 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,962 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,966 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,973 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,986 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:07:27,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:28,010 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:07:28,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:07:28,317 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:07:28,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28 WrapperNode [2024-11-28 02:07:28,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:07:28,320 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:28,320 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:07:28,320 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:07:28,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,363 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,479 INFO L138 Inliner]: procedures = 176, calls = 336, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1569 [2024-11-28 02:07:28,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:07:28,483 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:07:28,483 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:07:28,483 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:07:28,503 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,531 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,691 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-11-28 02:07:28,691 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,691 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,779 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,860 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:07:28,865 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:07:28,865 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:07:28,865 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:07:28,866 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (1/1) ... [2024-11-28 02:07:28,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:07:28,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:28,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:07:28,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:07:28,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:07:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:07:28,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:07:28,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:07:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:07:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:07:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:07:28,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:07:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:07:28,964 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:07:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:07:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:07:28,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:07:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:07:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:07:28,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:07:29,311 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:07:29,312 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:07:29,315 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:07:29,373 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:07:32,720 INFO L? ?]: Removed 1502 outVars from TransFormulas that were not future-live. [2024-11-28 02:07:32,720 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:07:32,774 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:07:32,774 INFO L312 CfgBuilder]: Removed 34 assume(true) statements. [2024-11-28 02:07:32,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:32 BoogieIcfgContainer [2024-11-28 02:07:32,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:07:32,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:07:32,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:07:32,790 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:07:32,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:07:27" (1/3) ... [2024-11-28 02:07:32,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243761c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:32, skipping insertion in model container [2024-11-28 02:07:32,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:07:28" (2/3) ... [2024-11-28 02:07:32,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243761c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:07:32, skipping insertion in model container [2024-11-28 02:07:32,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:07:32" (3/3) ... [2024-11-28 02:07:32,793 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2024-11-28 02:07:32,816 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:07:32,818 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test4-1.i that has 4 procedures, 1458 locations, 1 initial locations, 36 loop locations, and 628 error locations. [2024-11-28 02:07:32,916 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:07:32,935 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;@129300e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:07:32,935 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2024-11-28 02:07:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 1453 states, 812 states have (on average 2.0738916256157633) internal successors, (1684), 1444 states have internal predecessors, (1684), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:07:32,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:32,951 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:32,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:32,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1499246090, now seen corresponding path program 1 times [2024-11-28 02:07:32,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667038650] [2024-11-28 02:07:32,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:33,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667038650] [2024-11-28 02:07:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667038650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:33,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478577198] [2024-11-28 02:07:33,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:33,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:07:33,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:33,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:07:33,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:07:33,161 INFO L87 Difference]: Start difference. First operand has 1453 states, 812 states have (on average 2.0738916256157633) internal successors, (1684), 1444 states have internal predecessors, (1684), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2024-11-28 02:07:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:33,292 INFO L93 Difference]: Finished difference Result 1434 states and 1628 transitions. [2024-11-28 02:07:33,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:07:33,294 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 [2024-11-28 02:07:33,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:33,329 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 02:07:33,330 INFO L226 Difference]: Without dead ends: 1432 [2024-11-28 02:07:33,333 INFO L434 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 [2024-11-28 02:07:33,338 INFO L435 NwaCegarLoop]: 1628 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, 1628 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 [2024-11-28 02:07:33,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1628 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:33,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2024-11-28 02:07:33,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2024-11-28 02:07:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 802 states have (on average 1.9875311720698254) internal successors, (1594), 1423 states have internal predecessors, (1594), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:33,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1626 transitions. [2024-11-28 02:07:33,499 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1626 transitions. Word has length 6 [2024-11-28 02:07:33,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:33,499 INFO L471 AbstractCegarLoop]: Abstraction has 1432 states and 1626 transitions. [2024-11-28 02:07:33,500 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) [2024-11-28 02:07:33,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1626 transitions. [2024-11-28 02:07:33,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:07:33,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:33,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:33,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:07:33,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:33,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:33,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-11-28 02:07:33,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:33,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367954763] [2024-11-28 02:07:33,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:33,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:33,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367954763] [2024-11-28 02:07:33,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367954763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:33,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:33,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207841870] [2024-11-28 02:07:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:33,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:33,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:33,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:33,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:33,602 INFO L87 Difference]: Start difference. First operand 1432 states and 1626 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:35,265 INFO L93 Difference]: Finished difference Result 1341 states and 1536 transitions. [2024-11-28 02:07:35,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:35,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:07:35,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:35,273 INFO L225 Difference]: With dead ends: 1341 [2024-11-28 02:07:35,273 INFO L226 Difference]: Without dead ends: 1341 [2024-11-28 02:07:35,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:35,274 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 1367 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:35,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1383 Valid, 935 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:07:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-28 02:07:35,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1338. [2024-11-28 02:07:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1338 states, 802 states have (on average 1.8703241895261846) internal successors, (1500), 1329 states have internal predecessors, (1500), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:35,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1532 transitions. [2024-11-28 02:07:35,335 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1532 transitions. Word has length 6 [2024-11-28 02:07:35,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:35,335 INFO L471 AbstractCegarLoop]: Abstraction has 1338 states and 1532 transitions. [2024-11-28 02:07:35,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1532 transitions. [2024-11-28 02:07:35,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:07:35,337 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:35,337 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:35,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:07:35,339 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:35,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:35,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-11-28 02:07:35,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:35,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027287114] [2024-11-28 02:07:35,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:35,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:35,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:35,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:35,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027287114] [2024-11-28 02:07:35,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027287114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:35,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:35,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:07:35,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146080396] [2024-11-28 02:07:35,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:35,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:35,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:35,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:35,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:35,522 INFO L87 Difference]: Start difference. First operand 1338 states and 1532 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:37,065 INFO L93 Difference]: Finished difference Result 1755 states and 2027 transitions. [2024-11-28 02:07:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:07:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:37,073 INFO L225 Difference]: With dead ends: 1755 [2024-11-28 02:07:37,074 INFO L226 Difference]: Without dead ends: 1755 [2024-11-28 02:07:37,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:37,078 INFO L435 NwaCegarLoop]: 1288 mSDtfsCounter, 821 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:37,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1950 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:07:37,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2024-11-28 02:07:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1601. [2024-11-28 02:07:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1075 states have (on average 1.8362790697674418) internal successors, (1974), 1592 states have internal predecessors, (1974), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2006 transitions. [2024-11-28 02:07:37,136 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2006 transitions. Word has length 6 [2024-11-28 02:07:37,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:37,137 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2006 transitions. [2024-11-28 02:07:37,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2006 transitions. [2024-11-28 02:07:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:07:37,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:37,138 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:07:37,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:07:37,138 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:37,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:37,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1424649426, now seen corresponding path program 1 times [2024-11-28 02:07:37,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:37,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306818697] [2024-11-28 02:07:37,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:37,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:37,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:37,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:37,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:37,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306818697] [2024-11-28 02:07:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306818697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:37,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:37,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:37,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757919528] [2024-11-28 02:07:37,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:37,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:37,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:37,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:37,215 INFO L87 Difference]: Start difference. First operand 1601 states and 2006 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:37,290 INFO L93 Difference]: Finished difference Result 3152 states and 3942 transitions. [2024-11-28 02:07:37,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:37,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:07:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:37,305 INFO L225 Difference]: With dead ends: 3152 [2024-11-28 02:07:37,306 INFO L226 Difference]: Without dead ends: 3152 [2024-11-28 02:07:37,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:37,308 INFO L435 NwaCegarLoop]: 1803 mSDtfsCounter, 1439 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:37,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 3320 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:37,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2024-11-28 02:07:37,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 1602. [2024-11-28 02:07:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1076 states have (on average 1.8355018587360594) internal successors, (1975), 1593 states have internal predecessors, (1975), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2007 transitions. [2024-11-28 02:07:37,377 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2007 transitions. Word has length 6 [2024-11-28 02:07:37,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:37,377 INFO L471 AbstractCegarLoop]: Abstraction has 1602 states and 2007 transitions. [2024-11-28 02:07:37,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:37,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2007 transitions. [2024-11-28 02:07:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:07:37,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:37,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:37,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:07:37,379 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:37,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:37,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262039, now seen corresponding path program 1 times [2024-11-28 02:07:37,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:37,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266633743] [2024-11-28 02:07:37,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:37,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:37,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:37,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266633743] [2024-11-28 02:07:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266633743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:37,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:37,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978557002] [2024-11-28 02:07:37,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:37,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:37,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:37,543 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:37,543 INFO L87 Difference]: Start difference. First operand 1602 states and 2007 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:39,140 INFO L93 Difference]: Finished difference Result 1629 states and 2061 transitions. [2024-11-28 02:07:39,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:39,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 02:07:39,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:39,148 INFO L225 Difference]: With dead ends: 1629 [2024-11-28 02:07:39,149 INFO L226 Difference]: Without dead ends: 1629 [2024-11-28 02:07:39,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:39,152 INFO L435 NwaCegarLoop]: 896 mSDtfsCounter, 1635 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:39,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1651 Valid, 1638 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:07:39,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2024-11-28 02:07:39,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1579. [2024-11-28 02:07:39,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1579 states, 1076 states have (on average 1.8141263940520447) internal successors, (1952), 1570 states have internal predecessors, (1952), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:39,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1579 states to 1579 states and 1984 transitions. [2024-11-28 02:07:39,195 INFO L78 Accepts]: Start accepts. Automaton has 1579 states and 1984 transitions. Word has length 12 [2024-11-28 02:07:39,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:39,196 INFO L471 AbstractCegarLoop]: Abstraction has 1579 states and 1984 transitions. [2024-11-28 02:07:39,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 1579 states and 1984 transitions. [2024-11-28 02:07:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:07:39,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:39,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:07:39,200 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:39,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262040, now seen corresponding path program 1 times [2024-11-28 02:07:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109747494] [2024-11-28 02:07:39,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:39,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109747494] [2024-11-28 02:07:39,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109747494] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:39,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435747442] [2024-11-28 02:07:39,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:39,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:39,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:39,349 INFO L87 Difference]: Start difference. First operand 1579 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:39,392 INFO L93 Difference]: Finished difference Result 1504 states and 1881 transitions. [2024-11-28 02:07:39,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:39,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 02:07:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:39,399 INFO L225 Difference]: With dead ends: 1504 [2024-11-28 02:07:39,399 INFO L226 Difference]: Without dead ends: 1504 [2024-11-28 02:07:39,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:39,400 INFO L435 NwaCegarLoop]: 1384 mSDtfsCounter, 61 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:39,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2715 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2024-11-28 02:07:39,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1504. [2024-11-28 02:07:39,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1504 states, 1013 states have (on average 1.8252714708785784) internal successors, (1849), 1495 states have internal predecessors, (1849), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1504 states to 1504 states and 1881 transitions. [2024-11-28 02:07:39,436 INFO L78 Accepts]: Start accepts. Automaton has 1504 states and 1881 transitions. Word has length 12 [2024-11-28 02:07:39,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:39,436 INFO L471 AbstractCegarLoop]: Abstraction has 1504 states and 1881 transitions. [2024-11-28 02:07:39,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1504 states and 1881 transitions. [2024-11-28 02:07:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:07:39,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:39,437 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:07:39,437 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:39,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,438 INFO L85 PathProgramCache]: Analyzing trace with hash 23145585, now seen corresponding path program 1 times [2024-11-28 02:07:39,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652380795] [2024-11-28 02:07:39,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:39,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652380795] [2024-11-28 02:07:39,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652380795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:39,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521587170] [2024-11-28 02:07:39,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:39,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:39,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:39,550 INFO L87 Difference]: Start difference. First operand 1504 states and 1881 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:39,649 INFO L93 Difference]: Finished difference Result 1486 states and 1856 transitions. [2024-11-28 02:07:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 02:07:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:39,655 INFO L225 Difference]: With dead ends: 1486 [2024-11-28 02:07:39,655 INFO L226 Difference]: Without dead ends: 1486 [2024-11-28 02:07:39,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:39,657 INFO L435 NwaCegarLoop]: 1349 mSDtfsCounter, 41 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4019 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:39,658 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4019 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2024-11-28 02:07:39,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1483. [2024-11-28 02:07:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 999 states have (on average 1.822822822822823) internal successors, (1821), 1474 states have internal predecessors, (1821), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:39,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 1853 transitions. [2024-11-28 02:07:39,693 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 1853 transitions. Word has length 14 [2024-11-28 02:07:39,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:39,694 INFO L471 AbstractCegarLoop]: Abstraction has 1483 states and 1853 transitions. [2024-11-28 02:07:39,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:39,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 1853 transitions. [2024-11-28 02:07:39,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 02:07:39,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:39,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:39,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:07:39,695 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:39,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:39,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1739855297, now seen corresponding path program 1 times [2024-11-28 02:07:39,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:39,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413552304] [2024-11-28 02:07:39,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:39,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:39,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413552304] [2024-11-28 02:07:39,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413552304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:39,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:39,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:39,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664174499] [2024-11-28 02:07:39,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:39,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:39,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:39,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:39,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:39,965 INFO L87 Difference]: Start difference. First operand 1483 states and 1853 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:41,750 INFO L93 Difference]: Finished difference Result 1682 states and 1946 transitions. [2024-11-28 02:07:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:07:41,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-28 02:07:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:41,758 INFO L225 Difference]: With dead ends: 1682 [2024-11-28 02:07:41,758 INFO L226 Difference]: Without dead ends: 1682 [2024-11-28 02:07:41,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:41,759 INFO L435 NwaCegarLoop]: 1170 mSDtfsCounter, 826 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2601 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:41,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 2601 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:07:41,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2024-11-28 02:07:41,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1479. [2024-11-28 02:07:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 999 states have (on average 1.8188188188188188) internal successors, (1817), 1470 states have internal predecessors, (1817), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:41,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1849 transitions. [2024-11-28 02:07:41,802 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1849 transitions. Word has length 28 [2024-11-28 02:07:41,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:41,802 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 1849 transitions. [2024-11-28 02:07:41,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:41,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1849 transitions. [2024-11-28 02:07:41,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:07:41,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:41,807 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:41,808 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:07:41,808 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:41,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:41,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1055550923, now seen corresponding path program 1 times [2024-11-28 02:07:41,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102507872] [2024-11-28 02:07:41,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:41,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:42,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:42,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102507872] [2024-11-28 02:07:42,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102507872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:42,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:42,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:42,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044513604] [2024-11-28 02:07:42,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:42,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:07:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:42,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:07:42,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:07:42,010 INFO L87 Difference]: Start difference. First operand 1479 states and 1849 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:42,094 INFO L93 Difference]: Finished difference Result 1479 states and 1845 transitions. [2024-11-28 02:07:42,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:42,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2024-11-28 02:07:42,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:42,101 INFO L225 Difference]: With dead ends: 1479 [2024-11-28 02:07:42,102 INFO L226 Difference]: Without dead ends: 1479 [2024-11-28 02:07:42,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:42,103 INFO L435 NwaCegarLoop]: 1344 mSDtfsCounter, 21 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:42,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4001 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:42,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2024-11-28 02:07:42,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1479. [2024-11-28 02:07:42,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 999 states have (on average 1.8148148148148149) internal successors, (1813), 1470 states have internal predecessors, (1813), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1845 transitions. [2024-11-28 02:07:42,142 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1845 transitions. Word has length 62 [2024-11-28 02:07:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:42,144 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 1845 transitions. [2024-11-28 02:07:42,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1845 transitions. [2024-11-28 02:07:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 02:07:42,149 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:42,149 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:42,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:07:42,149 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:42,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash -680482047, now seen corresponding path program 1 times [2024-11-28 02:07:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:42,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746173855] [2024-11-28 02:07:42,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:42,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:42,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:42,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:42,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746173855] [2024-11-28 02:07:42,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746173855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:42,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:42,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:07:42,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104471543] [2024-11-28 02:07:42,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:42,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:07:42,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:42,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:07:42,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:42,380 INFO L87 Difference]: Start difference. First operand 1479 states and 1845 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:42,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:42,440 INFO L93 Difference]: Finished difference Result 1572 states and 1965 transitions. [2024-11-28 02:07:42,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:07:42,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-11-28 02:07:42,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:42,447 INFO L225 Difference]: With dead ends: 1572 [2024-11-28 02:07:42,447 INFO L226 Difference]: Without dead ends: 1572 [2024-11-28 02:07:42,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:07:42,449 INFO L435 NwaCegarLoop]: 1359 mSDtfsCounter, 54 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:42,450 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2691 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:42,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-28 02:07:42,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1572. [2024-11-28 02:07:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1092 states have (on average 1.77014652014652) internal successors, (1933), 1563 states have internal predecessors, (1933), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 1965 transitions. [2024-11-28 02:07:42,492 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 1965 transitions. Word has length 70 [2024-11-28 02:07:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:42,492 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 1965 transitions. [2024-11-28 02:07:42,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 1965 transitions. [2024-11-28 02:07:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 02:07:42,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:42,493 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:42,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:07:42,493 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:42,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -104075831, now seen corresponding path program 1 times [2024-11-28 02:07:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:42,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737269058] [2024-11-28 02:07:42,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:42,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:43,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737269058] [2024-11-28 02:07:43,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737269058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:43,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:43,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:07:43,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731737276] [2024-11-28 02:07:43,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:43,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:07:43,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:43,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:07:43,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:43,329 INFO L87 Difference]: Start difference. First operand 1572 states and 1965 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:44,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:44,866 INFO L93 Difference]: Finished difference Result 1488 states and 1881 transitions. [2024-11-28 02:07:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-11-28 02:07:44,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:44,871 INFO L225 Difference]: With dead ends: 1488 [2024-11-28 02:07:44,872 INFO L226 Difference]: Without dead ends: 1488 [2024-11-28 02:07:44,872 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:44,872 INFO L435 NwaCegarLoop]: 613 mSDtfsCounter, 3375 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:44,872 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3381 Valid, 1228 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:07:44,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2024-11-28 02:07:44,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1215. [2024-11-28 02:07:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 819 states have (on average 1.6666666666666667) internal successors, (1365), 1206 states have internal predecessors, (1365), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1397 transitions. [2024-11-28 02:07:44,897 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1397 transitions. Word has length 73 [2024-11-28 02:07:44,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:44,898 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1397 transitions. [2024-11-28 02:07:44,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1397 transitions. [2024-11-28 02:07:44,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 02:07:44,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:44,899 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:44,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:07:44,899 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:44,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:44,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1353945236, now seen corresponding path program 1 times [2024-11-28 02:07:44,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:44,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088665716] [2024-11-28 02:07:44,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:44,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:45,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:45,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:45,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088665716] [2024-11-28 02:07:45,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088665716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:45,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:45,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:45,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339204510] [2024-11-28 02:07:45,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:45,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:45,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:45,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:45,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:45,256 INFO L87 Difference]: Start difference. First operand 1215 states and 1397 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:46,783 INFO L93 Difference]: Finished difference Result 1214 states and 1396 transitions. [2024-11-28 02:07:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-28 02:07:46,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:46,790 INFO L225 Difference]: With dead ends: 1214 [2024-11-28 02:07:46,790 INFO L226 Difference]: Without dead ends: 1214 [2024-11-28 02:07:46,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:46,792 INFO L435 NwaCegarLoop]: 1271 mSDtfsCounter, 2 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:46,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3624 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:07:46,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-28 02:07:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1214. [2024-11-28 02:07:46,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 819 states have (on average 1.6654456654456655) internal successors, (1364), 1205 states have internal predecessors, (1364), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1396 transitions. [2024-11-28 02:07:46,818 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1396 transitions. Word has length 78 [2024-11-28 02:07:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:46,819 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1396 transitions. [2024-11-28 02:07:46,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:46,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1396 transitions. [2024-11-28 02:07:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 02:07:46,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:46,821 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:46,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:07:46,821 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:46,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:46,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1353945237, now seen corresponding path program 1 times [2024-11-28 02:07:46,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:46,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567341711] [2024-11-28 02:07:46,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:46,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:47,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:47,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567341711] [2024-11-28 02:07:47,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567341711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:47,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:47,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:47,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778171983] [2024-11-28 02:07:47,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:47,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:47,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:47,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:47,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:47,541 INFO L87 Difference]: Start difference. First operand 1214 states and 1396 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:49,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:49,127 INFO L93 Difference]: Finished difference Result 1213 states and 1395 transitions. [2024-11-28 02:07:49,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:49,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2024-11-28 02:07:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:49,131 INFO L225 Difference]: With dead ends: 1213 [2024-11-28 02:07:49,131 INFO L226 Difference]: Without dead ends: 1213 [2024-11-28 02:07:49,132 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:49,132 INFO L435 NwaCegarLoop]: 1271 mSDtfsCounter, 1 mSDsluCounter, 2368 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3639 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:49,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3639 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:07:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2024-11-28 02:07:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2024-11-28 02:07:49,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 818 states have (on average 1.6662591687041566) internal successors, (1363), 1204 states have internal predecessors, (1363), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:07:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1395 transitions. [2024-11-28 02:07:49,167 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1395 transitions. Word has length 78 [2024-11-28 02:07:49,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:49,167 INFO L471 AbstractCegarLoop]: Abstraction has 1213 states and 1395 transitions. [2024-11-28 02:07:49,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:07:49,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1395 transitions. [2024-11-28 02:07:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:07:49,169 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:49,169 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:49,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 02:07:49,170 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:49,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash -834999973, now seen corresponding path program 1 times [2024-11-28 02:07:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498350129] [2024-11-28 02:07:49,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:49,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:49,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498350129] [2024-11-28 02:07:49,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498350129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:49,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:49,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:07:49,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549417831] [2024-11-28 02:07:49,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:49,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:07:49,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:49,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:07:49,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:49,513 INFO L87 Difference]: Start difference. First operand 1213 states and 1395 transitions. Second operand has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:07:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:51,368 INFO L93 Difference]: Finished difference Result 1225 states and 1413 transitions. [2024-11-28 02:07:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:07:51,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2024-11-28 02:07:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:51,377 INFO L225 Difference]: With dead ends: 1225 [2024-11-28 02:07:51,377 INFO L226 Difference]: Without dead ends: 1225 [2024-11-28 02:07:51,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:07:51,378 INFO L435 NwaCegarLoop]: 1254 mSDtfsCounter, 12 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 1520 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:51,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4847 Invalid, 1537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1520 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:07:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2024-11-28 02:07:51,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1219. [2024-11-28 02:07:51,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 823 states have (on average 1.6646415552855407) internal successors, (1370), 1209 states have internal predecessors, (1370), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:07:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1408 transitions. [2024-11-28 02:07:51,406 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1408 transitions. Word has length 86 [2024-11-28 02:07:51,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:51,406 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1408 transitions. [2024-11-28 02:07:51,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:07:51,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1408 transitions. [2024-11-28 02:07:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:07:51,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:51,407 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:51,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 02:07:51,408 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:51,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:51,408 INFO L85 PathProgramCache]: Analyzing trace with hash -834999972, now seen corresponding path program 1 times [2024-11-28 02:07:51,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:51,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763789277] [2024-11-28 02:07:51,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:51,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:52,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:52,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:52,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763789277] [2024-11-28 02:07:52,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763789277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:52,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:52,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:07:52,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464686967] [2024-11-28 02:07:52,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:52,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:07:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:52,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:07:52,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:07:52,179 INFO L87 Difference]: Start difference. First operand 1219 states and 1408 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:07:54,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:54,033 INFO L93 Difference]: Finished difference Result 1219 states and 1407 transitions. [2024-11-28 02:07:54,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:54,033 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2024-11-28 02:07:54,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:54,036 INFO L225 Difference]: With dead ends: 1219 [2024-11-28 02:07:54,036 INFO L226 Difference]: Without dead ends: 1219 [2024-11-28 02:07:54,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:54,037 INFO L435 NwaCegarLoop]: 1261 mSDtfsCounter, 7 mSDsluCounter, 3352 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:54,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4613 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:07:54,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-28 02:07:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2024-11-28 02:07:54,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 823 states have (on average 1.663426488456865) internal successors, (1369), 1209 states have internal predecessors, (1369), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:07:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1407 transitions. [2024-11-28 02:07:54,057 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1407 transitions. Word has length 86 [2024-11-28 02:07:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:54,058 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1407 transitions. [2024-11-28 02:07:54,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:07:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1407 transitions. [2024-11-28 02:07:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 02:07:54,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:54,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:54,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:07:54,059 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:54,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 570824, now seen corresponding path program 1 times [2024-11-28 02:07:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157429852] [2024-11-28 02:07:54,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:54,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157429852] [2024-11-28 02:07:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157429852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447276549] [2024-11-28 02:07:54,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:54,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:54,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:54,616 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:54,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:07:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:54,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 02:07:54,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:54,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:07:55,119 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:07:55,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:07:55,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:07:55,254 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:07:55,255 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 [2024-11-28 02:07:55,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:07:55,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:55,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:55,406 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2024-11-28 02:07:55,407 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 21 treesize of output 20 [2024-11-28 02:07:55,417 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_501 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_501) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8)))) is different from false [2024-11-28 02:07:55,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447276549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:55,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:07:55,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2024-11-28 02:07:55,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572532714] [2024-11-28 02:07:55,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:55,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:07:55,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:55,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:07:55,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-11-28 02:07:55,423 INFO L87 Difference]: Start difference. First operand 1219 states and 1407 transitions. Second operand has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:07:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:58,683 INFO L93 Difference]: Finished difference Result 1218 states and 1406 transitions. [2024-11-28 02:07:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:07:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 87 [2024-11-28 02:07:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:58,688 INFO L225 Difference]: With dead ends: 1218 [2024-11-28 02:07:58,688 INFO L226 Difference]: Without dead ends: 1218 [2024-11-28 02:07:58,689 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=342, Unknown=1, NotChecked=38, Total=462 [2024-11-28 02:07:58,689 INFO L435 NwaCegarLoop]: 782 mSDtfsCounter, 1171 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 4166 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 6010 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:58,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 6010 Invalid, 4197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4166 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 02:07:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2024-11-28 02:07:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1218. [2024-11-28 02:07:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 823 states have (on average 1.6622114216281896) internal successors, (1368), 1208 states have internal predecessors, (1368), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:07:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1406 transitions. [2024-11-28 02:07:58,711 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1406 transitions. Word has length 87 [2024-11-28 02:07:58,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:58,711 INFO L471 AbstractCegarLoop]: Abstraction has 1218 states and 1406 transitions. [2024-11-28 02:07:58,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 10.333333333333334) internal successors, (124), 13 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:07:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1406 transitions. [2024-11-28 02:07:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 02:07:58,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:58,712 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:58,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:58,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:58,917 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:07:58,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash 570825, now seen corresponding path program 1 times [2024-11-28 02:07:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131350668] [2024-11-28 02:07:58,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:59,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131350668] [2024-11-28 02:07:59,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131350668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:59,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292577522] [2024-11-28 02:07:59,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:59,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:59,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:59,939 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:59,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:08:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:00,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:08:00,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:00,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:08:00,406 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:08:00,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:08:00,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:00,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:00,713 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:00,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-28 02:08:00,722 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 49 treesize of output 30 [2024-11-28 02:08:00,792 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 39 treesize of output 21 [2024-11-28 02:08:00,799 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 32 treesize of output 14 [2024-11-28 02:08:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:00,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:01,035 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:08:01,035 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 48 treesize of output 52 [2024-11-28 02:08:01,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292577522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:01,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:08:01,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2024-11-28 02:08:01,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666598615] [2024-11-28 02:08:01,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:01,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:08:01,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:01,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:08:01,200 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=388, Unknown=11, NotChecked=0, Total=462 [2024-11-28 02:08:01,200 INFO L87 Difference]: Start difference. First operand 1218 states and 1406 transitions. Second operand has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:08:06,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:06,206 INFO L93 Difference]: Finished difference Result 1217 states and 1405 transitions. [2024-11-28 02:08:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:08:06,206 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 87 [2024-11-28 02:08:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:06,211 INFO L225 Difference]: With dead ends: 1217 [2024-11-28 02:08:06,211 INFO L226 Difference]: Without dead ends: 1217 [2024-11-28 02:08:06,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=538, Unknown=12, NotChecked=0, Total=650 [2024-11-28 02:08:06,212 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 1171 mSDsluCounter, 6429 mSDsCounter, 0 mSdLazyCounter, 6774 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 7210 SdHoareTripleChecker+Invalid, 6823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 6774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:06,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 7210 Invalid, 6823 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [49 Valid, 6774 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-28 02:08:06,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-28 02:08:06,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1211. [2024-11-28 02:08:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 818 states have (on average 1.6638141809290954) internal successors, (1361), 1202 states have internal predecessors, (1361), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:08:06,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1393 transitions. [2024-11-28 02:08:06,233 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1393 transitions. Word has length 87 [2024-11-28 02:08:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:06,234 INFO L471 AbstractCegarLoop]: Abstraction has 1211 states and 1393 transitions. [2024-11-28 02:08:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 8.5) internal successors, (136), 19 states have internal predecessors, (136), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:08:06,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1393 transitions. [2024-11-28 02:08:06,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:08:06,238 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:06,238 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:06,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:06,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:08:06,439 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:06,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash 966994512, now seen corresponding path program 1 times [2024-11-28 02:08:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880036330] [2024-11-28 02:08:06,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:06,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:06,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:07,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:07,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880036330] [2024-11-28 02:08:07,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880036330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:07,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:07,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:08:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729259812] [2024-11-28 02:08:07,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:07,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:08:07,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:07,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:08:07,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:08:07,169 INFO L87 Difference]: Start difference. First operand 1211 states and 1393 transitions. Second operand has 14 states, 12 states have (on average 7.25) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:10,514 INFO L93 Difference]: Finished difference Result 1221 states and 1409 transitions. [2024-11-28 02:08:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:08:10,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.25) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-28 02:08:10,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:10,519 INFO L225 Difference]: With dead ends: 1221 [2024-11-28 02:08:10,519 INFO L226 Difference]: Without dead ends: 1221 [2024-11-28 02:08:10,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:08:10,520 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 1198 mSDsluCounter, 5977 mSDsCounter, 0 mSdLazyCounter, 4714 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 4745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 4714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:10,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 6758 Invalid, 4745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 4714 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:08:10,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2024-11-28 02:08:10,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1220. [2024-11-28 02:08:10,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 826 states have (on average 1.6598062953995156) internal successors, (1371), 1210 states have internal predecessors, (1371), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:08:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1409 transitions. [2024-11-28 02:08:10,551 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1409 transitions. Word has length 89 [2024-11-28 02:08:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:10,554 INFO L471 AbstractCegarLoop]: Abstraction has 1220 states and 1409 transitions. [2024-11-28 02:08:10,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.25) internal successors, (87), 13 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:10,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1409 transitions. [2024-11-28 02:08:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:08:10,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:10,556 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:10,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 02:08:10,556 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:10,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:10,557 INFO L85 PathProgramCache]: Analyzing trace with hash 966994513, now seen corresponding path program 1 times [2024-11-28 02:08:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:10,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528614863] [2024-11-28 02:08:10,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:10,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528614863] [2024-11-28 02:08:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528614863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:11,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:11,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:08:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124170522] [2024-11-28 02:08:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:11,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:08:11,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:11,560 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:08:11,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:08:11,561 INFO L87 Difference]: Start difference. First operand 1220 states and 1409 transitions. Second operand has 11 states, 10 states have (on average 8.7) internal successors, (87), 11 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:15,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:15,301 INFO L93 Difference]: Finished difference Result 1220 states and 1408 transitions. [2024-11-28 02:08:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:08:15,301 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 11 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2024-11-28 02:08:15,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:15,306 INFO L225 Difference]: With dead ends: 1220 [2024-11-28 02:08:15,306 INFO L226 Difference]: Without dead ends: 1220 [2024-11-28 02:08:15,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:08:15,307 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 1173 mSDsluCounter, 4508 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 5296 SdHoareTripleChecker+Invalid, 4880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:15,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 5296 Invalid, 4880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-28 02:08:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2024-11-28 02:08:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1220. [2024-11-28 02:08:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 826 states have (on average 1.658595641646489) internal successors, (1370), 1210 states have internal predecessors, (1370), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:08:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1408 transitions. [2024-11-28 02:08:15,335 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1408 transitions. Word has length 89 [2024-11-28 02:08:15,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:15,336 INFO L471 AbstractCegarLoop]: Abstraction has 1220 states and 1408 transitions. [2024-11-28 02:08:15,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.7) internal successors, (87), 11 states have internal predecessors, (87), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1408 transitions. [2024-11-28 02:08:15,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:08:15,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:15,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:15,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 02:08:15,338 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:15,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash -173839677, now seen corresponding path program 1 times [2024-11-28 02:08:15,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:15,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758669795] [2024-11-28 02:08:15,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:15,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:16,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:16,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:16,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758669795] [2024-11-28 02:08:16,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758669795] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:16,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847880016] [2024-11-28 02:08:16,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:16,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:16,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:16,135 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:16,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:08:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:16,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:08:16,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:16,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:08:16,641 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:08:16,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:08:16,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:16,726 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:16,727 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 [2024-11-28 02:08:16,800 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:16,801 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 [2024-11-28 02:08:16,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:08:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:16,866 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:16,888 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_879 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_879) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-28 02:08:16,996 INFO L349 Elim1Store]: treesize reduction 5, result has 82.8 percent of original size [2024-11-28 02:08:16,996 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 32 [2024-11-28 02:08:17,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847880016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:17,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:08:17,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 15 [2024-11-28 02:08:17,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213846098] [2024-11-28 02:08:17,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:17,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:08:17,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:17,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:08:17,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=245, Unknown=15, NotChecked=32, Total=342 [2024-11-28 02:08:17,056 INFO L87 Difference]: Start difference. First operand 1220 states and 1408 transitions. Second operand has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:20,143 INFO L93 Difference]: Finished difference Result 1219 states and 1407 transitions. [2024-11-28 02:08:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:08:20,145 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 90 [2024-11-28 02:08:20,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:20,149 INFO L225 Difference]: With dead ends: 1219 [2024-11-28 02:08:20,150 INFO L226 Difference]: Without dead ends: 1219 [2024-11-28 02:08:20,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=483, Unknown=15, NotChecked=46, Total=650 [2024-11-28 02:08:20,151 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 1167 mSDsluCounter, 5934 mSDsCounter, 0 mSdLazyCounter, 4693 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 6715 SdHoareTripleChecker+Invalid, 4723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 4693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:20,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 6715 Invalid, 4723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 4693 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 02:08:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2024-11-28 02:08:20,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219. [2024-11-28 02:08:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 826 states have (on average 1.6573849878934626) internal successors, (1369), 1209 states have internal predecessors, (1369), 16 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (22), 8 states have call predecessors, (22), 16 states have call successors, (22) [2024-11-28 02:08:20,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1407 transitions. [2024-11-28 02:08:20,168 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1407 transitions. Word has length 90 [2024-11-28 02:08:20,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:20,169 INFO L471 AbstractCegarLoop]: Abstraction has 1219 states and 1407 transitions. [2024-11-28 02:08:20,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 9.214285714285714) internal successors, (129), 15 states have internal predecessors, (129), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:20,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1407 transitions. [2024-11-28 02:08:20,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:08:20,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:20,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:20,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:20,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:20,370 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:20,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:20,371 INFO L85 PathProgramCache]: Analyzing trace with hash -173839676, now seen corresponding path program 1 times [2024-11-28 02:08:20,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:20,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953268829] [2024-11-28 02:08:20,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:20,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:21,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:21,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953268829] [2024-11-28 02:08:21,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953268829] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:21,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473511344] [2024-11-28 02:08:21,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:21,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:21,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:21,402 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:21,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:08:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:21,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 02:08:21,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:21,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:08:21,918 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:08:21,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:08:21,927 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 8 treesize of output 1 [2024-11-28 02:08:21,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:21,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:08:22,108 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 22 treesize of output 10 [2024-11-28 02:08:22,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:08:22,277 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:22,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:08:22,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:08:22,417 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:22,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:08:22,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:08:22,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:08:22,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:08:22,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:22,502 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:22,599 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1019 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:08:22,616 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1019 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-28 02:08:22,697 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1025 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1025) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1019 (Array Int Int)) (v_ArrVal_1026 (Array Int Int)) (v_ArrVal_1025 (Array Int Int)) (v_ArrVal_1020 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1025))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1026) .cse1 v_ArrVal_1019) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1020) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-28 02:08:22,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473511344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:22,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:08:22,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-28 02:08:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203794261] [2024-11-28 02:08:22,701 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:22,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:08:22,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:22,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:08:22,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=397, Unknown=3, NotChecked=126, Total=600 [2024-11-28 02:08:22,703 INFO L87 Difference]: Start difference. First operand 1219 states and 1407 transitions. Second operand has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:08:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:30,064 INFO L93 Difference]: Finished difference Result 1226 states and 1414 transitions. [2024-11-28 02:08:30,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:08:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 90 [2024-11-28 02:08:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:30,068 INFO L225 Difference]: With dead ends: 1226 [2024-11-28 02:08:30,068 INFO L226 Difference]: Without dead ends: 1226 [2024-11-28 02:08:30,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=594, Unknown=3, NotChecked=156, Total=870 [2024-11-28 02:08:30,069 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 1170 mSDsluCounter, 7229 mSDsCounter, 0 mSdLazyCounter, 8502 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 8015 SdHoareTripleChecker+Invalid, 8549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 8502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:30,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 8015 Invalid, 8549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 8502 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-28 02:08:30,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2024-11-28 02:08:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1214. [2024-11-28 02:08:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 822 states have (on average 1.659367396593674) internal successors, (1364), 1204 states have internal predecessors, (1364), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:08:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1396 transitions. [2024-11-28 02:08:30,093 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1396 transitions. Word has length 90 [2024-11-28 02:08:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:30,095 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1396 transitions. [2024-11-28 02:08:30,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.352941176470589) internal successors, (142), 20 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:08:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1396 transitions. [2024-11-28 02:08:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 02:08:30,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:30,097 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:30,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:08:30,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:30,301 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:30,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1388471394, now seen corresponding path program 1 times [2024-11-28 02:08:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492016900] [2024-11-28 02:08:30,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:30,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:31,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:31,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:31,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492016900] [2024-11-28 02:08:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492016900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:31,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:31,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:08:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856418424] [2024-11-28 02:08:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:31,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:08:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:31,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:08:31,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:08:31,084 INFO L87 Difference]: Start difference. First operand 1214 states and 1396 transitions. Second operand has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:35,118 INFO L93 Difference]: Finished difference Result 1230 states and 1418 transitions. [2024-11-28 02:08:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:08:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2024-11-28 02:08:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:35,123 INFO L225 Difference]: With dead ends: 1230 [2024-11-28 02:08:35,124 INFO L226 Difference]: Without dead ends: 1230 [2024-11-28 02:08:35,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:08:35,126 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 1175 mSDsluCounter, 7452 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 8232 SdHoareTripleChecker+Invalid, 5781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:35,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 8232 Invalid, 5781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:08:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-28 02:08:35,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1226. [2024-11-28 02:08:35,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 833 states have (on average 1.653061224489796) internal successors, (1377), 1215 states have internal predecessors, (1377), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:08:35,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1410 transitions. [2024-11-28 02:08:35,150 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1410 transitions. Word has length 92 [2024-11-28 02:08:35,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:35,150 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1410 transitions. [2024-11-28 02:08:35,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 14 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:35,150 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1410 transitions. [2024-11-28 02:08:35,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-28 02:08:35,151 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:35,152 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:35,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 02:08:35,153 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:35,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:35,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1388471395, now seen corresponding path program 1 times [2024-11-28 02:08:35,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:35,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046430079] [2024-11-28 02:08:35,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046430079] [2024-11-28 02:08:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046430079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:08:36,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763000358] [2024-11-28 02:08:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:36,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:08:36,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:36,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:08:36,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:08:36,219 INFO L87 Difference]: Start difference. First operand 1226 states and 1410 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:40,831 INFO L93 Difference]: Finished difference Result 1229 states and 1417 transitions. [2024-11-28 02:08:40,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:08:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 92 [2024-11-28 02:08:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:40,835 INFO L225 Difference]: With dead ends: 1229 [2024-11-28 02:08:40,835 INFO L226 Difference]: Without dead ends: 1229 [2024-11-28 02:08:40,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:08:40,836 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 1191 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 5704 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 5724 SdHoareTripleChecker+Invalid, 5733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 5704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:40,836 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 5724 Invalid, 5733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 5704 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:08:40,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-28 02:08:40,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1226. [2024-11-28 02:08:40,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 833 states have (on average 1.6518607442977191) internal successors, (1376), 1215 states have internal predecessors, (1376), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:08:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1409 transitions. [2024-11-28 02:08:40,856 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1409 transitions. Word has length 92 [2024-11-28 02:08:40,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:40,856 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1409 transitions. [2024-11-28 02:08:40,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 12 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1409 transitions. [2024-11-28 02:08:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:08:40,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:40,858 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:40,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 02:08:40,858 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:40,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash 873360143, now seen corresponding path program 1 times [2024-11-28 02:08:40,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:40,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076309143] [2024-11-28 02:08:40,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:40,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076309143] [2024-11-28 02:08:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076309143] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:41,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679014689] [2024-11-28 02:08:41,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:41,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:41,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:41,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:08:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:42,333 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:08:42,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:42,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:08:42,500 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:08:42,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:08:42,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:42,585 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:42,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-28 02:08:42,657 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:42,657 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 [2024-11-28 02:08:42,740 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:42,740 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 [2024-11-28 02:08:42,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:08:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:42,765 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:42,786 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1300 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1300) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-28 02:08:42,796 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1300 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1300) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-28 02:08:42,811 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1300 (Array Int Int)) (v_ArrVal_1299 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1299))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1300)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-28 02:08:42,897 INFO L349 Elim1Store]: treesize reduction 5, result has 90.6 percent of original size [2024-11-28 02:08:42,898 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 57 treesize of output 56 [2024-11-28 02:08:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679014689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:42,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:08:42,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 17 [2024-11-28 02:08:42,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688392089] [2024-11-28 02:08:42,970 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:42,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:08:42,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:42,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:08:42,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=312, Unknown=13, NotChecked=114, Total=506 [2024-11-28 02:08:42,972 INFO L87 Difference]: Start difference. First operand 1226 states and 1409 transitions. Second operand has 18 states, 16 states have (on average 8.375) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:46,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:46,638 INFO L93 Difference]: Finished difference Result 1228 states and 1416 transitions. [2024-11-28 02:08:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:08:46,638 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.375) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-28 02:08:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:46,643 INFO L225 Difference]: With dead ends: 1228 [2024-11-28 02:08:46,643 INFO L226 Difference]: Without dead ends: 1228 [2024-11-28 02:08:46,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=621, Unknown=13, NotChecked=162, Total=930 [2024-11-28 02:08:46,644 INFO L435 NwaCegarLoop]: 780 mSDtfsCounter, 1165 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 7467 SdHoareTripleChecker+Invalid, 5243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:46,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 7467 Invalid, 5243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5213 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:08:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-28 02:08:46,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1225. [2024-11-28 02:08:46,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 833 states have (on average 1.6506602641056423) internal successors, (1375), 1214 states have internal predecessors, (1375), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:08:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1408 transitions. [2024-11-28 02:08:46,673 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1408 transitions. Word has length 93 [2024-11-28 02:08:46,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:46,674 INFO L471 AbstractCegarLoop]: Abstraction has 1225 states and 1408 transitions. [2024-11-28 02:08:46,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.375) internal successors, (134), 17 states have internal predecessors, (134), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:46,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1408 transitions. [2024-11-28 02:08:46,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 02:08:46,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:46,676 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:46,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:08:46,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:46,877 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:46,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:46,878 INFO L85 PathProgramCache]: Analyzing trace with hash 873360144, now seen corresponding path program 1 times [2024-11-28 02:08:46,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:46,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087903413] [2024-11-28 02:08:46,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:46,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:48,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:48,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087903413] [2024-11-28 02:08:48,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087903413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:48,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741636996] [2024-11-28 02:08:48,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:48,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:48,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:08:48,240 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:08:48,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:08:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:48,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:08:48,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:08:48,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:08:48,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:08:48,813 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:08:48,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:08:48,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:08:48,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:08:48,911 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 22 treesize of output 10 [2024-11-28 02:08:48,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:08:49,058 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:49,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:08:49,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:08:49,172 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:49,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:08:49,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:08:49,268 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:08:49,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:08:49,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:08:49,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:08:49,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:08:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:49,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:08:49,403 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1454 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8))) (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:08:49,420 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 12) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_1454 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 8)))))) is different from false [2024-11-28 02:08:49,452 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1453) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1452) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8))) (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1452))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1453) .cse1 v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 12) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-28 02:08:49,477 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1452))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1453) .cse1 v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1453) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1452) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8)))))) is different from false [2024-11-28 02:08:49,574 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1455 (Array Int Int)) (v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1461 (Array Int Int)) (v_ArrVal_1460 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1461))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_1452))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1460) .cse0 v_ArrVal_1453) .cse1 v_ArrVal_1454) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 12) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_1454 (Array Int Int)) (v_ArrVal_1453 (Array Int Int)) (v_ArrVal_1452 (Array Int Int)) (v_ArrVal_1461 (Array Int Int)) (v_ArrVal_1460 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1461))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1460) .cse5 v_ArrVal_1453) (select (select (store .cse6 .cse5 v_ArrVal_1452) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1454))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 8))))) is different from false [2024-11-28 02:08:49,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741636996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:08:49,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:08:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 17 [2024-11-28 02:08:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818859095] [2024-11-28 02:08:49,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:08:49,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:08:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:49,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:08:49,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=321, Unknown=5, NotChecked=200, Total=600 [2024-11-28 02:08:49,581 INFO L87 Difference]: Start difference. First operand 1225 states and 1408 transitions. Second operand has 18 states, 16 states have (on average 8.6875) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:08:53,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:53,603 INFO L93 Difference]: Finished difference Result 1227 states and 1415 transitions. [2024-11-28 02:08:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:08:53,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.6875) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 93 [2024-11-28 02:08:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:53,609 INFO L225 Difference]: With dead ends: 1227 [2024-11-28 02:08:53,609 INFO L226 Difference]: Without dead ends: 1227 [2024-11-28 02:08:53,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=119, Invalid=546, Unknown=5, NotChecked=260, Total=930 [2024-11-28 02:08:53,611 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 1166 mSDsluCounter, 4512 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 5297 SdHoareTripleChecker+Invalid, 4921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:53,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 5297 Invalid, 4921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-28 02:08:53,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2024-11-28 02:08:53,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1212. [2024-11-28 02:08:53,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 822 states have (on average 1.6569343065693432) internal successors, (1362), 1202 states have internal predecessors, (1362), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:08:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1394 transitions. [2024-11-28 02:08:53,644 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1394 transitions. Word has length 93 [2024-11-28 02:08:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:53,644 INFO L471 AbstractCegarLoop]: Abstraction has 1212 states and 1394 transitions. [2024-11-28 02:08:53,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.6875) internal successors, (139), 18 states have internal predecessors, (139), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:08:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1394 transitions. [2024-11-28 02:08:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 02:08:53,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:53,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:53,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:08:53,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:08:53,848 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:53,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash -878103497, now seen corresponding path program 1 times [2024-11-28 02:08:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:53,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408305683] [2024-11-28 02:08:53,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:53,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:54,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:54,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408305683] [2024-11-28 02:08:54,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408305683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:54,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:54,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:08:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140189222] [2024-11-28 02:08:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:54,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:08:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:54,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:08:54,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:08:54,712 INFO L87 Difference]: Start difference. First operand 1212 states and 1394 transitions. Second operand has 16 states, 14 states have (on average 6.642857142857143) internal successors, (93), 15 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:58,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:08:58,624 INFO L93 Difference]: Finished difference Result 1231 states and 1419 transitions. [2024-11-28 02:08:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:08:58,625 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.642857142857143) internal successors, (93), 15 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2024-11-28 02:08:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:08:58,628 INFO L225 Difference]: With dead ends: 1231 [2024-11-28 02:08:58,628 INFO L226 Difference]: Without dead ends: 1231 [2024-11-28 02:08:58,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:08:58,629 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 1194 mSDsluCounter, 7446 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 8225 SdHoareTripleChecker+Invalid, 5781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:08:58,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 8225 Invalid, 5781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 5751 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-28 02:08:58,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-28 02:08:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1227. [2024-11-28 02:08:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 836 states have (on average 1.6483253588516746) internal successors, (1378), 1216 states have internal predecessors, (1378), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:08:58,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1411 transitions. [2024-11-28 02:08:58,648 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1411 transitions. Word has length 95 [2024-11-28 02:08:58,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:08:58,649 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1411 transitions. [2024-11-28 02:08:58,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.642857142857143) internal successors, (93), 15 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:08:58,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1411 transitions. [2024-11-28 02:08:58,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 02:08:58,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:08:58,650 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:08:58,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 02:08:58,651 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:08:58,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:08:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash -878103496, now seen corresponding path program 1 times [2024-11-28 02:08:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:08:58,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130527816] [2024-11-28 02:08:58,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:08:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:08:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:08:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:08:59,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:08:59,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130527816] [2024-11-28 02:08:59,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130527816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:08:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:08:59,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 02:08:59,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143780337] [2024-11-28 02:08:59,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:08:59,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:08:59,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:08:59,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:08:59,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:08:59,803 INFO L87 Difference]: Start difference. First operand 1227 states and 1411 transitions. Second operand has 13 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:02,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:02,786 INFO L93 Difference]: Finished difference Result 1230 states and 1418 transitions. [2024-11-28 02:09:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:09:02,787 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2024-11-28 02:09:02,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:02,789 INFO L225 Difference]: With dead ends: 1230 [2024-11-28 02:09:02,789 INFO L226 Difference]: Without dead ends: 1230 [2024-11-28 02:09:02,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:09:02,790 INFO L435 NwaCegarLoop]: 786 mSDtfsCounter, 1175 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 3664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:02,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1195 Valid, 4018 Invalid, 3664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:09:02,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-28 02:09:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1227. [2024-11-28 02:09:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 836 states have (on average 1.6471291866028708) internal successors, (1377), 1216 states have internal predecessors, (1377), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:09:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1410 transitions. [2024-11-28 02:09:02,805 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1410 transitions. Word has length 95 [2024-11-28 02:09:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:02,805 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1410 transitions. [2024-11-28 02:09:02,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 13 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:02,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1410 transitions. [2024-11-28 02:09:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:09:02,807 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:02,807 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:02,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 02:09:02,807 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:09:02,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -639233430, now seen corresponding path program 1 times [2024-11-28 02:09:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607443756] [2024-11-28 02:09:02,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:03,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:03,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607443756] [2024-11-28 02:09:03,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607443756] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:03,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214670524] [2024-11-28 02:09:03,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:03,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:03,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:03,453 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:03,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:09:03,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:03,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:09:03,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:03,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:09:03,850 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:09:03,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:09:03,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:09:03,948 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:03,948 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 [2024-11-28 02:09:03,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:03,997 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 [2024-11-28 02:09:04,047 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:04,048 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 [2024-11-28 02:09:04,093 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:04,094 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 [2024-11-28 02:09:04,110 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:09:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:04,113 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:04,213 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1759))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1760)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-28 02:09:08,333 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1758))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1759)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1760)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-28 02:09:08,346 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1758))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1759)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1760)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-28 02:09:08,408 INFO L349 Elim1Store]: treesize reduction 5, result has 95.0 percent of original size [2024-11-28 02:09:08,408 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 105 treesize of output 104 [2024-11-28 02:09:08,416 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1758 (Array Int Int)) (v_ArrVal_1763 (Array Int Int)) (v_ArrVal_1760 (Array Int Int)) (v_ArrVal_1759 (Array Int Int))) (= |c_ULTIMATE.start_main_#t~mem50#1.base| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1763))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1758)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1759)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1760)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 02:09:08,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214670524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:08,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:09:08,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2024-11-28 02:09:08,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624246928] [2024-11-28 02:09:08,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:08,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 02:09:08,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:08,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 02:09:08,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=497, Unknown=23, NotChecked=196, Total=812 [2024-11-28 02:09:08,420 INFO L87 Difference]: Start difference. First operand 1227 states and 1410 transitions. Second operand has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 22 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:09:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:15,167 INFO L93 Difference]: Finished difference Result 1229 states and 1417 transitions. [2024-11-28 02:09:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:09:15,168 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 22 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 96 [2024-11-28 02:09:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:15,170 INFO L225 Difference]: With dead ends: 1229 [2024-11-28 02:09:15,171 INFO L226 Difference]: Without dead ends: 1229 [2024-11-28 02:09:15,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=181, Invalid=934, Unknown=23, NotChecked=268, Total=1406 [2024-11-28 02:09:15,172 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 1167 mSDsluCounter, 8140 mSDsCounter, 0 mSdLazyCounter, 6269 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 8919 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 6269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:15,172 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 8919 Invalid, 6315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [46 Valid, 6269 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-28 02:09:15,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-28 02:09:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1226. [2024-11-28 02:09:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 836 states have (on average 1.645933014354067) internal successors, (1376), 1215 states have internal predecessors, (1376), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:09:15,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1409 transitions. [2024-11-28 02:09:15,186 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1409 transitions. Word has length 96 [2024-11-28 02:09:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:15,186 INFO L471 AbstractCegarLoop]: Abstraction has 1226 states and 1409 transitions. [2024-11-28 02:09:15,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.684210526315789) internal successors, (146), 22 states have internal predecessors, (146), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:09:15,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1409 transitions. [2024-11-28 02:09:15,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:09:15,187 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:15,187 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:15,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:09:15,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 02:09:15,388 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:09:15,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:15,389 INFO L85 PathProgramCache]: Analyzing trace with hash -639233429, now seen corresponding path program 1 times [2024-11-28 02:09:15,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:15,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793459041] [2024-11-28 02:09:15,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:15,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:16,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793459041] [2024-11-28 02:09:16,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793459041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:16,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893379325] [2024-11-28 02:09:16,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:16,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:16,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:16,999 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:17,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:09:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:17,380 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:09:17,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:17,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:09:17,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-28 02:09:17,630 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:09:17,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:09:17,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:09:17,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:09:17,755 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 22 treesize of output 10 [2024-11-28 02:09:17,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:09:17,996 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:17,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:09:18,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:09:18,162 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:18,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:09:18,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:09:18,275 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:18,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:09:18,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:09:18,386 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:18,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:09:18,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:09:18,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:09:18,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:09:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:18,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:18,597 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1929 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:09:18,708 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1926))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1927) .cse0 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 24) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1927) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_1926) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 20))))) is different from false [2024-11-28 02:09:18,731 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1927) .cse1 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1927) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1926) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20)))))) is different from false [2024-11-28 02:09:18,775 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1925))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1924) .cse0 v_ArrVal_1927) (select (select (store .cse1 .cse0 v_ArrVal_1926) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_1929))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 20))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1925))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_1926))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_1924) .cse3 v_ArrVal_1927) .cse4 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 24) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) is different from false [2024-11-28 02:09:18,807 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (<= 0 (+ (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1925))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1924) .cse1 v_ArrVal_1927) (select (select (store .cse2 .cse1 v_ArrVal_1926) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1929))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 20))) (forall ((v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1925))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_1926))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1924) .cse4 v_ArrVal_1927) .cse5 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))) is different from false [2024-11-28 02:09:18,982 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1935 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1934))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_1925))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1935) .cse0 v_ArrVal_1924) .cse1 v_ArrVal_1927) (select (select (store .cse2 .cse1 v_ArrVal_1926) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_1929))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (forall ((v_ArrVal_1934 (Array Int Int)) (v_ArrVal_1929 (Array Int Int)) (v_ArrVal_1928 (Array Int Int)) (v_ArrVal_1927 (Array Int Int)) (v_ArrVal_1926 (Array Int Int)) (v_ArrVal_1925 (Array Int Int)) (v_ArrVal_1935 (Array Int Int)) (v_ArrVal_1924 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1934))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_1925))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_1926))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_1935) .cse5 v_ArrVal_1924) .cse6 v_ArrVal_1927) .cse7 v_ArrVal_1929) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_1928) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))) is different from false [2024-11-28 02:09:18,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893379325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:18,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:09:18,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 19 [2024-11-28 02:09:18,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838767694] [2024-11-28 02:09:18,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:18,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:09:18,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:18,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:09:18,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=423, Unknown=11, NotChecked=282, Total=812 [2024-11-28 02:09:18,988 INFO L87 Difference]: Start difference. First operand 1226 states and 1409 transitions. Second operand has 20 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:09:30,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:30,734 INFO L93 Difference]: Finished difference Result 1228 states and 1416 transitions. [2024-11-28 02:09:30,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:09:30,734 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 96 [2024-11-28 02:09:30,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:30,737 INFO L225 Difference]: With dead ends: 1228 [2024-11-28 02:09:30,737 INFO L226 Difference]: Without dead ends: 1228 [2024-11-28 02:09:30,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 96 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=726, Unknown=12, NotChecked=366, Total=1260 [2024-11-28 02:09:30,738 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 1160 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 8788 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 8888 SdHoareTripleChecker+Invalid, 8819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 8788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:30,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 8888 Invalid, 8819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 8788 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2024-11-28 02:09:30,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2024-11-28 02:09:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1210. [2024-11-28 02:09:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 822 states have (on average 1.6545012165450121) internal successors, (1360), 1200 states have internal predecessors, (1360), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:09:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1392 transitions. [2024-11-28 02:09:30,753 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1392 transitions. Word has length 96 [2024-11-28 02:09:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:30,754 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 1392 transitions. [2024-11-28 02:09:30,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:09:30,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1392 transitions. [2024-11-28 02:09:30,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:09:30,754 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:30,754 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:30,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:09:30,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:09:30,955 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:09:30,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:30,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1339982791, now seen corresponding path program 1 times [2024-11-28 02:09:30,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:30,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326472872] [2024-11-28 02:09:30,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:30,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:31,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326472872] [2024-11-28 02:09:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326472872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 02:09:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113901205] [2024-11-28 02:09:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:31,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:09:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:31,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:09:31,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:09:31,925 INFO L87 Difference]: Start difference. First operand 1210 states and 1392 transitions. Second operand has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:36,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:36,351 INFO L93 Difference]: Finished difference Result 1233 states and 1421 transitions. [2024-11-28 02:09:36,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:09:36,351 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-28 02:09:36,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:36,355 INFO L225 Difference]: With dead ends: 1233 [2024-11-28 02:09:36,355 INFO L226 Difference]: Without dead ends: 1233 [2024-11-28 02:09:36,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:09:36,356 INFO L435 NwaCegarLoop]: 784 mSDtfsCounter, 1197 mSDsluCounter, 4450 mSDsCounter, 0 mSdLazyCounter, 3690 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 3690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:36,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 5234 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 3690 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 02:09:36,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2024-11-28 02:09:36,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1229. [2024-11-28 02:09:36,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 840 states have (on average 1.6428571428571428) internal successors, (1380), 1218 states have internal predecessors, (1380), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:09:36,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1413 transitions. [2024-11-28 02:09:36,376 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1413 transitions. Word has length 99 [2024-11-28 02:09:36,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:36,377 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1413 transitions. [2024-11-28 02:09:36,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:36,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1413 transitions. [2024-11-28 02:09:36,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 02:09:36,378 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:36,378 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:36,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 02:09:36,379 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:09:36,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:36,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1339982790, now seen corresponding path program 1 times [2024-11-28 02:09:36,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:36,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054112562] [2024-11-28 02:09:36,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:36,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:38,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:38,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054112562] [2024-11-28 02:09:38,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054112562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:38,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:38,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 02:09:38,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545539104] [2024-11-28 02:09:38,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:38,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:09:38,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:38,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:09:38,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:09:38,235 INFO L87 Difference]: Start difference. First operand 1229 states and 1413 transitions. Second operand has 18 states, 16 states have (on average 6.0625) internal successors, (97), 17 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:48,150 INFO L93 Difference]: Finished difference Result 1232 states and 1420 transitions. [2024-11-28 02:09:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:09:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.0625) internal successors, (97), 17 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-28 02:09:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:48,154 INFO L225 Difference]: With dead ends: 1232 [2024-11-28 02:09:48,154 INFO L226 Difference]: Without dead ends: 1232 [2024-11-28 02:09:48,154 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-28 02:09:48,155 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 1194 mSDsluCounter, 6203 mSDsCounter, 0 mSdLazyCounter, 6993 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1214 SdHoareTripleChecker+Valid, 6982 SdHoareTripleChecker+Invalid, 7027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 6993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:48,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1214 Valid, 6982 Invalid, 7027 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 6993 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-28 02:09:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2024-11-28 02:09:48,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1229. [2024-11-28 02:09:48,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 840 states have (on average 1.6416666666666666) internal successors, (1379), 1218 states have internal predecessors, (1379), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:09:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1412 transitions. [2024-11-28 02:09:48,169 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1412 transitions. Word has length 99 [2024-11-28 02:09:48,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:48,169 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1412 transitions. [2024-11-28 02:09:48,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.0625) internal successors, (97), 17 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:09:48,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1412 transitions. [2024-11-28 02:09:48,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:09:48,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:48,170 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:48,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-28 02:09:48,171 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:09:48,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:48,171 INFO L85 PathProgramCache]: Analyzing trace with hash 2072905964, now seen corresponding path program 1 times [2024-11-28 02:09:48,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:48,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781566325] [2024-11-28 02:09:48,171 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:48,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:49,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:49,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:49,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781566325] [2024-11-28 02:09:49,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781566325] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:49,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571373965] [2024-11-28 02:09:49,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:49,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:49,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:49,405 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:49,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:09:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:49,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:09:49,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:49,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:09:50,086 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:09:50,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:09:50,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:09:50,268 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:50,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-28 02:09:50,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:50,353 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 [2024-11-28 02:09:50,440 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:50,440 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 [2024-11-28 02:09:50,526 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:50,527 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 [2024-11-28 02:09:50,614 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:09:50,614 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 [2024-11-28 02:09:50,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:09:50,683 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 02:09:50,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-28 02:09:50,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:50,692 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:51,939 INFO L349 Elim1Store]: treesize reduction 10, result has 97.5 percent of original size [2024-11-28 02:09:51,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 597 treesize of output 794 [2024-11-28 02:09:51,976 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2267 (Array Int Int)) (v_ArrVal_2266 (Array Int Int)) (v_ArrVal_2265 (Array Int Int)) (v_ArrVal_2264 (Array Int Int)) (v_ArrVal_2271 (Array Int Int))) (= (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2271))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2264)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2265)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2266)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2267)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem50#1.base|)) is different from false [2024-11-28 02:09:51,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571373965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:51,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:09:51,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2024-11-28 02:09:51,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127733157] [2024-11-28 02:09:51,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:51,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 02:09:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:51,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 02:09:51,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=931, Unknown=46, NotChecked=64, Total=1190 [2024-11-28 02:09:51,982 INFO L87 Difference]: Start difference. First operand 1229 states and 1412 transitions. Second operand has 24 states, 21 states have (on average 7.238095238095238) internal successors, (152), 24 states have internal predecessors, (152), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:09:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:59,846 INFO L93 Difference]: Finished difference Result 1231 states and 1419 transitions. [2024-11-28 02:09:59,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:09:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.238095238095238) internal successors, (152), 24 states have internal predecessors, (152), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-28 02:09:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:59,851 INFO L225 Difference]: With dead ends: 1231 [2024-11-28 02:09:59,851 INFO L226 Difference]: Without dead ends: 1231 [2024-11-28 02:09:59,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=271, Invalid=1579, Unknown=46, NotChecked=84, Total=1980 [2024-11-28 02:09:59,854 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 1162 mSDsluCounter, 8181 mSDsCounter, 0 mSdLazyCounter, 6231 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 8959 SdHoareTripleChecker+Invalid, 6263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 6231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:59,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 8959 Invalid, 6263 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 6231 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-28 02:09:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-28 02:09:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1228. [2024-11-28 02:09:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 840 states have (on average 1.6404761904761904) internal successors, (1378), 1217 states have internal predecessors, (1378), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:09:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1411 transitions. [2024-11-28 02:09:59,916 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1411 transitions. Word has length 100 [2024-11-28 02:09:59,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:59,917 INFO L471 AbstractCegarLoop]: Abstraction has 1228 states and 1411 transitions. [2024-11-28 02:09:59,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.238095238095238) internal successors, (152), 24 states have internal predecessors, (152), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:09:59,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1411 transitions. [2024-11-28 02:09:59,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:09:59,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:59,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:59,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:10:00,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:00,119 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:10:00,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:00,120 INFO L85 PathProgramCache]: Analyzing trace with hash 2072905965, now seen corresponding path program 1 times [2024-11-28 02:10:00,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:00,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084507616] [2024-11-28 02:10:00,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:01,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:10:01,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084507616] [2024-11-28 02:10:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084507616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:01,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619847574] [2024-11-28 02:10:01,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:01,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:01,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:01,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:01,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:10:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:02,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 02:10:02,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:02,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:10:02,442 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-28 02:10:02,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-28 02:10:02,462 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 8 treesize of output 1 [2024-11-28 02:10:02,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:10:02,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:10:02,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 02:10:02,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:10:03,121 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:10:03,122 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 73 treesize of output 66 [2024-11-28 02:10:03,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:10:03,366 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:10:03,366 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 73 treesize of output 66 [2024-11-28 02:10:03,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:10:03,529 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:10:03,530 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 73 treesize of output 66 [2024-11-28 02:10:03,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:10:03,687 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:10:03,687 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 73 treesize of output 66 [2024-11-28 02:10:03,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:10:03,856 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:10:03,856 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 73 treesize of output 66 [2024-11-28 02:10:03,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:10:03,909 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 42 treesize of output 18 [2024-11-28 02:10:03,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:10:04,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:10:04,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2024-11-28 02:10:04,052 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-28 02:10:04,052 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 16 treesize of output 18 [2024-11-28 02:10:04,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:10:04,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:06,244 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2449 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (< 0 (+ (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2450))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_2451))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2449) .cse0 v_ArrVal_2452) .cse1 v_ArrVal_2454) (select (select (store .cse2 .cse1 v_ArrVal_2453) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2456))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)))) (forall ((v_ArrVal_2449 (Array Int Int)) (v_ArrVal_2456 (Array Int Int)) (v_ArrVal_2455 (Array Int Int)) (v_ArrVal_2454 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc57#1.base_7| Int) (v_ArrVal_2453 (Array Int Int)) (v_ArrVal_2452 (Array Int Int)) (v_ArrVal_2451 (Array Int Int)) (v_ArrVal_2450 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_7|) 0)) (forall ((v_ArrVal_2457 Int)) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2450))) (let ((.cse5 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse5 v_ArrVal_2451))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_2453))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_2449) .cse5 v_ArrVal_2452) .cse6 v_ArrVal_2454) .cse7 v_ArrVal_2456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_7| v_ArrVal_2457) (select (select (store .cse8 .cse7 v_ArrVal_2455) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))))))) is different from false [2024-11-28 02:10:23,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619847574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:23,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:10:23,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2024-11-28 02:10:23,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526068018] [2024-11-28 02:10:23,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:23,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 02:10:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:23,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 02:10:23,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1414, Unknown=49, NotChecked=78, Total=1722 [2024-11-28 02:10:23,520 INFO L87 Difference]: Start difference. First operand 1228 states and 1411 transitions. Second operand has 30 states, 27 states have (on average 6.0) internal successors, (162), 29 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:11:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:11:46,634 INFO L93 Difference]: Finished difference Result 1230 states and 1418 transitions. [2024-11-28 02:11:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:11:46,634 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 6.0) internal successors, (162), 29 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-28 02:11:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:11:46,638 INFO L225 Difference]: With dead ends: 1230 [2024-11-28 02:11:46,638 INFO L226 Difference]: Without dead ends: 1230 [2024-11-28 02:11:46,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=308, Invalid=2197, Unknown=49, NotChecked=98, Total=2652 [2024-11-28 02:11:46,640 INFO L435 NwaCegarLoop]: 777 mSDtfsCounter, 1147 mSDsluCounter, 13015 mSDsCounter, 0 mSdLazyCounter, 15216 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 13792 SdHoareTripleChecker+Invalid, 15253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 15216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:11:46,640 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 13792 Invalid, 15253 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [37 Valid, 15216 Invalid, 0 Unknown, 0 Unchecked, 80.4s Time] [2024-11-28 02:11:46,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-28 02:11:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1208. [2024-11-28 02:11:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 822 states have (on average 1.6520681265206814) internal successors, (1358), 1198 states have internal predecessors, (1358), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:11:46,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1390 transitions. [2024-11-28 02:11:46,659 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1390 transitions. Word has length 100 [2024-11-28 02:11:46,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:11:46,660 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1390 transitions. [2024-11-28 02:11:46,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 6.0) internal successors, (162), 29 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:11:46,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1390 transitions. [2024-11-28 02:11:46,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:11:46,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:11:46,661 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:11:46,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:11:46,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 02:11:46,862 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:11:46,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:11:46,863 INFO L85 PathProgramCache]: Analyzing trace with hash -2000637137, now seen corresponding path program 1 times [2024-11-28 02:11:46,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:11:46,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334415202] [2024-11-28 02:11:46,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:46,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:48,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:11:48,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:48,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334415202] [2024-11-28 02:11:48,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334415202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:11:48,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:11:48,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:11:48,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070050378] [2024-11-28 02:11:48,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:11:48,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:11:48,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:11:48,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:11:48,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:11:48,646 INFO L87 Difference]: Start difference. First operand 1208 states and 1390 transitions. Second operand has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:12:19,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:19,726 INFO L93 Difference]: Finished difference Result 1234 states and 1422 transitions. [2024-11-28 02:12:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:12:19,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-28 02:12:19,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:19,729 INFO L225 Difference]: With dead ends: 1234 [2024-11-28 02:12:19,729 INFO L226 Difference]: Without dead ends: 1234 [2024-11-28 02:12:19,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:12:19,730 INFO L435 NwaCegarLoop]: 783 mSDtfsCounter, 1197 mSDsluCounter, 8230 mSDsCounter, 0 mSdLazyCounter, 6164 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 9013 SdHoareTripleChecker+Invalid, 6194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 6164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:19,730 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 9013 Invalid, 6194 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 6164 Invalid, 0 Unknown, 0 Unchecked, 30.1s Time] [2024-11-28 02:12:19,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2024-11-28 02:12:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 1230. [2024-11-28 02:12:19,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 843 states have (on average 1.638196915776987) internal successors, (1381), 1219 states have internal predecessors, (1381), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:12:19,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1414 transitions. [2024-11-28 02:12:19,748 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1414 transitions. Word has length 102 [2024-11-28 02:12:19,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:19,748 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1414 transitions. [2024-11-28 02:12:19,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:12:19,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1414 transitions. [2024-11-28 02:12:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 02:12:19,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:19,750 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:19,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 02:12:19,750 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:12:19,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:19,751 INFO L85 PathProgramCache]: Analyzing trace with hash -2000637136, now seen corresponding path program 1 times [2024-11-28 02:12:19,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:19,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712496180] [2024-11-28 02:12:19,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:19,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:23,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:12:23,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:23,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712496180] [2024-11-28 02:12:23,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712496180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:23,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:23,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 02:12:23,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840556705] [2024-11-28 02:12:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:23,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:12:23,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:23,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:12:23,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:12:23,192 INFO L87 Difference]: Start difference. First operand 1230 states and 1414 transitions. Second operand has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:12:56,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:56,488 INFO L93 Difference]: Finished difference Result 1233 states and 1421 transitions. [2024-11-28 02:12:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:12:56,488 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-28 02:12:56,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:56,492 INFO L225 Difference]: With dead ends: 1233 [2024-11-28 02:12:56,492 INFO L226 Difference]: Without dead ends: 1233 [2024-11-28 02:12:56,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2024-11-28 02:12:56,493 INFO L435 NwaCegarLoop]: 778 mSDtfsCounter, 1178 mSDsluCounter, 5608 mSDsCounter, 0 mSdLazyCounter, 6341 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 6386 SdHoareTripleChecker+Invalid, 6374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:12:56,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 6386 Invalid, 6374 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 6341 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2024-11-28 02:12:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2024-11-28 02:12:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1230. [2024-11-28 02:12:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 843 states have (on average 1.6370106761565837) internal successors, (1380), 1219 states have internal predecessors, (1380), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:12:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1413 transitions. [2024-11-28 02:12:56,512 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1413 transitions. Word has length 102 [2024-11-28 02:12:56,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:56,513 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1413 transitions. [2024-11-28 02:12:56,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.882352941176471) internal successors, (100), 18 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:12:56,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1413 transitions. [2024-11-28 02:12:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:12:56,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:56,514 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:12:56,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 02:12:56,514 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:12:56,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash 902432156, now seen corresponding path program 1 times [2024-11-28 02:12:56,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:56,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605823799] [2024-11-28 02:12:56,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:56,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:12:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:57,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:12:57,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:12:57,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605823799] [2024-11-28 02:12:57,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605823799] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:57,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:12:57,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:12:57,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592372111] [2024-11-28 02:12:57,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:57,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:12:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:57,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:12:57,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:12:57,375 INFO L87 Difference]: Start difference. First operand 1230 states and 1413 transitions. Second operand has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:13:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:13:03,706 INFO L93 Difference]: Finished difference Result 1229 states and 1412 transitions. [2024-11-28 02:13:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:13:03,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2024-11-28 02:13:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:13:03,711 INFO L225 Difference]: With dead ends: 1229 [2024-11-28 02:13:03,711 INFO L226 Difference]: Without dead ends: 1229 [2024-11-28 02:13:03,712 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:13:03,712 INFO L435 NwaCegarLoop]: 1259 mSDtfsCounter, 2 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3863 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:13:03,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3863 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 02:13:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2024-11-28 02:13:03,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2024-11-28 02:13:03,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 843 states have (on average 1.6358244365361803) internal successors, (1379), 1218 states have internal predecessors, (1379), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:13:03,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1412 transitions. [2024-11-28 02:13:03,729 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1412 transitions. Word has length 103 [2024-11-28 02:13:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:13:03,730 INFO L471 AbstractCegarLoop]: Abstraction has 1229 states and 1412 transitions. [2024-11-28 02:13:03,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.2) internal successors, (101), 6 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:13:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1412 transitions. [2024-11-28 02:13:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 02:13:03,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:13:03,731 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:13:03,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 02:13:03,732 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:13:03,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:13:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash 902432157, now seen corresponding path program 1 times [2024-11-28 02:13:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:13:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340094920] [2024-11-28 02:13:03,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:13:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:07,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:13:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340094920] [2024-11-28 02:13:07,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340094920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:13:07,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721631912] [2024-11-28 02:13:07,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:13:07,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:13:07,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:13:07,466 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:13:07,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:13:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:13:07,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 02:13:07,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:13:07,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:13:08,714 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:13:08,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:13:08,745 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 8 treesize of output 1 [2024-11-28 02:13:08,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:13:08,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:13:09,399 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 22 treesize of output 10 [2024-11-28 02:13:09,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:13:10,251 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:10,251 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 73 treesize of output 66 [2024-11-28 02:13:10,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:11,062 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:11,063 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 73 treesize of output 66 [2024-11-28 02:13:11,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:11,710 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:11,711 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 73 treesize of output 66 [2024-11-28 02:13:11,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:12,207 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:12,207 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 73 treesize of output 66 [2024-11-28 02:13:12,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:12,729 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:12,729 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 73 treesize of output 66 [2024-11-28 02:13:12,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:13,250 INFO L349 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2024-11-28 02:13:13,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2024-11-28 02:13:13,382 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-28 02:13:13,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 27 [2024-11-28 02:13:13,711 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:13:13,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 02:13:13,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:13:13,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 02:13:13,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 02:13:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:13:14,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:13:14,420 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2920 (Array Int Int)) (v_ArrVal_2919 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 44) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2919 (Array Int Int))) (<= 0 (+ 40 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 02:13:16,223 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2919 (Array Int Int)) (v_ArrVal_2917 (Array Int Int)) (v_ArrVal_2916 (Array Int Int)) (v_ArrVal_2915 (Array Int Int)) (v_ArrVal_2914 (Array Int Int))) (<= 0 (+ 40 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2914))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2915) .cse0 v_ArrVal_2917) (select (select (store .cse1 .cse0 v_ArrVal_2916) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2919))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_9| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_9|) 0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc57#1.base_9| Int) (v_ArrVal_2917 (Array Int Int)) (v_ArrVal_2916 (Array Int Int)) (v_ArrVal_2915 (Array Int Int)) (v_ArrVal_2914 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc57#1.base_9|) 0)) (forall ((v_ArrVal_2920 (Array Int Int)) (v_ArrVal_2918 Int) (v_ArrVal_2919 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2914))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_2916))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2915) .cse3 v_ArrVal_2917) .cse4 v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 44) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_9| v_ArrVal_2918) (select (select (store .cse5 .cse4 v_ArrVal_2920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))))) is different from false [2024-11-28 02:14:09,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:14:09,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1180 treesize of output 1198 [2024-11-28 02:14:14,242 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_prenex_32 (Array Int Int)) (v_prenex_30 (Array Int Int)) (v_prenex_36 (Array Int Int)) (v_prenex_35 (Array Int Int)) (v_prenex_34 (Array Int Int)) (v_prenex_33 (Array Int Int)) (v_prenex_29 (Array Int Int)) (v_prenex_28 (Array Int Int)) (v_prenex_27 (Array Int Int)) (v_prenex_38 (Array Int Int)) (v_prenex_37 (Array Int Int))) (< 0 (+ 41 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_37))) (let ((.cse0 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse7 (store .cse8 .cse0 v_prenex_30))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_prenex_28))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_prenex_38))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_prenex_35) .cse0 v_prenex_29) .cse1 v_prenex_27) .cse2 v_prenex_36) .cse3 v_prenex_33) (select (select (store .cse4 .cse3 v_prenex_34) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_32))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))) (forall ((v_ArrVal_2913 (Array Int Int)) (v_ArrVal_2912 (Array Int Int)) (v_ArrVal_2911 (Array Int Int)) (v_ArrVal_2910 (Array Int Int)) (v_ArrVal_2920 (Array Int Int)) (v_ArrVal_2918 Int) (|v_ULTIMATE.start_main_#t~malloc57#1.base_9| Int) (v_ArrVal_2919 (Array Int Int)) (v_ArrVal_2917 (Array Int Int)) (v_ArrVal_2916 (Array Int Int)) (v_ArrVal_2926 (Array Int Int)) (v_ArrVal_2915 (Array Int Int)) (v_ArrVal_2925 (Array Int Int)) (v_ArrVal_2914 (Array Int Int))) (or (= |v_ULTIMATE.start_main_#t~malloc57#1.base_9| |c_ULTIMATE.start_main_#t~mem50#1.base|) (let ((.cse18 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2925))) (let ((.cse9 (select (select .cse18 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse17 (store .cse18 .cse9 v_ArrVal_2910))) (let ((.cse10 (select (select .cse17 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse16 (store .cse17 .cse10 v_ArrVal_2912))) (let ((.cse11 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse15 (store .cse16 .cse11 v_ArrVal_2914))) (let ((.cse12 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse14 (store .cse15 .cse12 v_ArrVal_2916))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (< (+ (select (select (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem50#1.base| v_ArrVal_2926) .cse9 v_ArrVal_2911) .cse10 v_ArrVal_2913) .cse11 v_ArrVal_2915) .cse12 v_ArrVal_2917) .cse13 v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) 43) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc57#1.base_9| v_ArrVal_2918) (select (select (store .cse14 .cse13 v_ArrVal_2920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))))))))))))))) is different from false [2024-11-28 02:14:14,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721631912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:14,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:14:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 33 [2024-11-28 02:14:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636517458] [2024-11-28 02:14:14,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:14:14,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:14:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:14:14,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:14:14,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=1677, Unknown=64, NotChecked=264, Total=2256 [2024-11-28 02:14:14,300 INFO L87 Difference]: Start difference. First operand 1229 states and 1412 transitions. Second operand has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 32 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:15:41,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:41,079 INFO L93 Difference]: Finished difference Result 1231 states and 1419 transitions. [2024-11-28 02:15:41,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:15:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 32 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-28 02:15:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:41,082 INFO L225 Difference]: With dead ends: 1231 [2024-11-28 02:15:41,082 INFO L226 Difference]: Without dead ends: 1231 [2024-11-28 02:15:41,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 67.9s TimeCoverageRelationStatistics Valid=422, Invalid=2606, Unknown=64, NotChecked=330, Total=3422 [2024-11-28 02:15:41,083 INFO L435 NwaCegarLoop]: 776 mSDtfsCounter, 1162 mSDsluCounter, 7384 mSDsCounter, 0 mSdLazyCounter, 8358 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 8160 SdHoareTripleChecker+Invalid, 8396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 8358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:41,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 8160 Invalid, 8396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 8358 Invalid, 0 Unknown, 0 Unchecked, 81.3s Time] [2024-11-28 02:15:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-28 02:15:41,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1206. [2024-11-28 02:15:41,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 822 states have (on average 1.6496350364963503) internal successors, (1356), 1196 states have internal predecessors, (1356), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:15:41,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1388 transitions. [2024-11-28 02:15:41,095 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1388 transitions. Word has length 103 [2024-11-28 02:15:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:41,096 INFO L471 AbstractCegarLoop]: Abstraction has 1206 states and 1388 transitions. [2024-11-28 02:15:41,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 5.419354838709677) internal successors, (168), 32 states have internal predecessors, (168), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:15:41,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1388 transitions. [2024-11-28 02:15:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:15:41,096 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:41,096 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:15:41,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:15:41,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 02:15:41,297 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:15:41,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash 280865697, now seen corresponding path program 1 times [2024-11-28 02:15:41,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:41,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028471878] [2024-11-28 02:15:41,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:41,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:15:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:15:45,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:15:45,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028471878] [2024-11-28 02:15:45,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028471878] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:45,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:15:45,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:15:45,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568397856] [2024-11-28 02:15:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:45,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:15:45,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:45,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:15:45,094 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:15:45,094 INFO L87 Difference]: Start difference. First operand 1206 states and 1388 transitions. Second operand has 16 states, 15 states have (on average 6.866666666666666) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:16:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:16:55,614 INFO L93 Difference]: Finished difference Result 1257 states and 1447 transitions. [2024-11-28 02:16:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:16:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.866666666666666) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2024-11-28 02:16:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:16:55,617 INFO L225 Difference]: With dead ends: 1257 [2024-11-28 02:16:55,617 INFO L226 Difference]: Without dead ends: 1257 [2024-11-28 02:16:55,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=95, Invalid=555, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:16:55,618 INFO L435 NwaCegarLoop]: 785 mSDtfsCounter, 1229 mSDsluCounter, 8648 mSDsCounter, 0 mSdLazyCounter, 7172 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 9433 SdHoareTripleChecker+Invalid, 7205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 7172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:16:55,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1249 Valid, 9433 Invalid, 7205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [33 Valid, 7172 Invalid, 0 Unknown, 0 Unchecked, 68.4s Time] [2024-11-28 02:16:55,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-28 02:16:55,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1231. [2024-11-28 02:16:55,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 846 states have (on average 1.6335697399527187) internal successors, (1382), 1220 states have internal predecessors, (1382), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:16:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1415 transitions. [2024-11-28 02:16:55,633 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1415 transitions. Word has length 105 [2024-11-28 02:16:55,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:16:55,634 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1415 transitions. [2024-11-28 02:16:55,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.866666666666666) internal successors, (103), 16 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:16:55,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1415 transitions. [2024-11-28 02:16:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 02:16:55,635 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:16:55,635 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:16:55,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-28 02:16:55,636 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:16:55,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:16:55,636 INFO L85 PathProgramCache]: Analyzing trace with hash 280865696, now seen corresponding path program 1 times [2024-11-28 02:16:55,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:16:55,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371439853] [2024-11-28 02:16:55,637 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:16:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:16:59,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:59,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371439853] [2024-11-28 02:16:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371439853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:16:59,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:16:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 02:16:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807232630] [2024-11-28 02:16:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:16:59,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:16:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:16:59,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:16:59,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:16:59,624 INFO L87 Difference]: Start difference. First operand 1231 states and 1415 transitions. Second operand has 17 states, 16 states have (on average 6.4375) internal successors, (103), 17 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:17:37,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:17:37,500 INFO L93 Difference]: Finished difference Result 1256 states and 1446 transitions. [2024-11-28 02:17:37,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:17:37,501 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.4375) internal successors, (103), 17 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2024-11-28 02:17:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:17:37,503 INFO L225 Difference]: With dead ends: 1256 [2024-11-28 02:17:37,503 INFO L226 Difference]: Without dead ends: 1256 [2024-11-28 02:17:37,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:17:37,504 INFO L435 NwaCegarLoop]: 790 mSDtfsCounter, 1269 mSDsluCounter, 4590 mSDsCounter, 0 mSdLazyCounter, 3798 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 3833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:17:37,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 5380 Invalid, 3833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 3798 Invalid, 0 Unknown, 0 Unchecked, 36.0s Time] [2024-11-28 02:17:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1256 states. [2024-11-28 02:17:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1256 to 1231. [2024-11-28 02:17:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 846 states have (on average 1.632387706855792) internal successors, (1381), 1220 states have internal predecessors, (1381), 16 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (17), 8 states have call predecessors, (17), 16 states have call successors, (17) [2024-11-28 02:17:37,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1414 transitions. [2024-11-28 02:17:37,521 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1414 transitions. Word has length 105 [2024-11-28 02:17:37,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:17:37,521 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1414 transitions. [2024-11-28 02:17:37,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.4375) internal successors, (103), 17 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:17:37,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1414 transitions. [2024-11-28 02:17:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 02:17:37,522 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:37,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:37,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 02:17:37,523 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:17:37,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2138266092, now seen corresponding path program 1 times [2024-11-28 02:17:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:37,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420461374] [2024-11-28 02:17:37,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:17:37,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:17:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420461374] [2024-11-28 02:17:42,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420461374] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:17:42,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963018181] [2024-11-28 02:17:42,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:42,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:17:42,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:17:42,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:17:42,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:17:42,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:17:42,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 02:17:42,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:17:42,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:17:44,036 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 02:17:44,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-28 02:17:44,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:17:44,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:17:45,475 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:45,475 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 51 treesize of output 48 [2024-11-28 02:17:45,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:17:46,082 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:46,082 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 51 treesize of output 48 [2024-11-28 02:17:46,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:17:46,717 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:46,717 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 51 treesize of output 48 [2024-11-28 02:17:46,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:17:47,326 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:47,326 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 51 treesize of output 48 [2024-11-28 02:17:47,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:17:47,959 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:47,959 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 51 treesize of output 48 [2024-11-28 02:17:47,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 02:17:48,730 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:48,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-28 02:17:48,755 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 49 treesize of output 30 [2024-11-28 02:17:49,915 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:17:49,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 65 [2024-11-28 02:17:49,937 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 49 treesize of output 30 [2024-11-28 02:17:50,082 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 39 treesize of output 21 [2024-11-28 02:17:50,103 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 32 treesize of output 14 [2024-11-28 02:17:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:17:50,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:17:51,688 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3317) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (forall ((v_ArrVal_3316 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3317) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3316) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))) is different from false [2024-11-28 02:17:51,825 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:17:51,826 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 82 treesize of output 86 [2024-11-28 02:17:52,117 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3315) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3317) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (forall ((v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (= (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_prenex_39))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) |c_ULTIMATE.start_main_#t~mem56#1.base|)) (forall ((v_prenex_41 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_prenex_39 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_prenex_40) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_prenex_41) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (+ |c_ULTIMATE.start_main_#t~mem56#1.offset| 1))))) is different from false [2024-11-28 02:17:52,276 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_prenex_41 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_prenex_39 (Array Int Int))) (< (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_prenex_40) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_prenex_41) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (+ (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1))) (forall ((v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (= .cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_prenex_39))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (forall ((v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3315) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3317) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 02:17:52,459 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_3312))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_3313) .cse0 v_ArrVal_3315) (select (select (store .cse1 .cse0 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3317))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_3312))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse3 (select (select (let ((.cse4 (store .cse5 .cse3 v_prenex_39))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) (forall ((v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse6 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_3313))) (< (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem55#1.base| v_ArrVal_3312))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store .cse6 .cse7 v_prenex_40) (select (select (store .cse8 .cse7 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (+ (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1)))))) is different from false [2024-11-28 02:17:52,713 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3312))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3313) .cse1 v_ArrVal_3315) (select (select (store .cse2 .cse1 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3317))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (forall ((v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3312))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (= (select (select (let ((.cse4 (store .cse5 .cse6 v_prenex_39))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) .cse6)))) (forall ((v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse7 (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3313))) (< (select (select (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3312))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store .cse7 .cse8 v_prenex_40) (select (select (store .cse9 .cse8 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (+ (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1))))))) is different from false [2024-11-28 02:17:53,005 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3311))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse2 (store .cse4 .cse0 v_ArrVal_3312))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3310) .cse0 v_ArrVal_3313) .cse1 v_ArrVal_3315) (select (select (store .cse2 .cse1 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3317))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse6 (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3311))) (store .cse8 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3312)))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (= (select (select (let ((.cse5 (store .cse6 .cse7 v_prenex_39))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) .cse7)))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse12 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3311))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_3310) .cse13 v_ArrVal_3313))) (< (select (select (let ((.cse11 (store .cse12 .cse13 v_ArrVal_3312))) (let ((.cse10 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store .cse9 .cse10 v_prenex_40) (select (select (store .cse11 .cse10 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (+ (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))))))) is different from false [2024-11-28 02:17:53,249 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse5 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse5 v_ArrVal_3311))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3312)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_prenex_39))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int))) (<= 0 (select (select (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse5 v_ArrVal_3311))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_3312))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse5 v_ArrVal_3310) .cse6 v_ArrVal_3313) .cse7 v_ArrVal_3315) (select (select (store .cse8 .cse7 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_3317))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int))) (let ((.cse13 (store |c_#memory_$Pointer$#1.base| .cse5 v_ArrVal_3311))) (let ((.cse14 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse10 (store (store |c_#memory_$Pointer$#1.offset| .cse5 v_ArrVal_3310) .cse14 v_ArrVal_3313))) (< (select (select (let ((.cse12 (store .cse13 .cse14 v_ArrVal_3312))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store .cse10 .cse11 v_prenex_40) (select (select (store .cse12 .cse11 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (+ (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))))))))) is different from false [2024-11-28 02:17:53,713 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (<= 0 (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_3309))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_3311))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_3312))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_3308) .cse0 v_ArrVal_3310) .cse1 v_ArrVal_3313) .cse2 v_ArrVal_3315) (select (select (store .cse3 .cse2 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3317))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse9 (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_3309))) (store .cse11 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3311)))) (store .cse10 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3312)))) (let ((.cse7 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (= .cse7 (select (select (let ((.cse8 (store .cse9 .cse7 v_prenex_39))) (store .cse8 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse18 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_3309))) (let ((.cse17 (select (select .cse18 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse15 (store .cse18 .cse17 v_ArrVal_3311))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse12 (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem53#1.base| v_ArrVal_3308) .cse17 v_ArrVal_3310) .cse16 v_ArrVal_3313))) (< (select (select (let ((.cse14 (store .cse15 .cse16 v_ArrVal_3312))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store .cse12 .cse13 v_prenex_40) (select (select (store .cse14 .cse13 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (+ (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) 1)))))))))) is different from false [2024-11-28 02:17:54,051 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (and (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3317 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (<= 0 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3309))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_ArrVal_3311))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_ArrVal_3312))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3308) .cse1 v_ArrVal_3310) .cse2 v_ArrVal_3313) .cse3 v_ArrVal_3315) (select (select (store .cse4 .cse3 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3317))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse14 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3309))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse11 (store .cse14 .cse13 v_ArrVal_3311))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse8 (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3308) .cse13 v_ArrVal_3310) .cse12 v_ArrVal_3313))) (< (select (select (let ((.cse10 (store .cse11 .cse12 v_ArrVal_3312))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store .cse8 .cse9 v_prenex_40) (select (select (store .cse10 .cse9 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) (+ (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) 1)))))))) (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse17 (let ((.cse18 (let ((.cse19 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3309))) (store .cse19 (select (select .cse19 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3311)))) (store .cse18 (select (select .cse18 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3312)))) (let ((.cse15 (select (select .cse17 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (= .cse15 (select (select (let ((.cse16 (store .cse17 .cse15 v_prenex_39))) (store .cse16 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))))))) is different from false [2024-11-28 02:17:59,528 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse2 (let ((.cse4 (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_3307))) (store .cse6 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3309)))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3311)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3312)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_prenex_39))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3306 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse15 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_3307))) (let ((.cse12 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse14 (store .cse15 .cse12 v_ArrVal_3309))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse10 (store .cse14 .cse13 v_ArrVal_3311))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse7 (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_3306) .cse12 v_ArrVal_3308) .cse13 v_ArrVal_3310) .cse11 v_ArrVal_3313))) (< (select (select (let ((.cse9 (store .cse10 .cse11 v_ArrVal_3312))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (store (store .cse7 .cse8 v_prenex_40) (select (select (store .cse9 .cse8 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (+ (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1)))))))))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3306 (Array Int Int)) (v_ArrVal_3317 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (<= 0 (select (select (let ((.cse23 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_3307))) (let ((.cse16 (select (select .cse23 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse22 (store .cse23 .cse16 v_ArrVal_3309))) (let ((.cse17 (select (select .cse22 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse21 (store .cse22 .cse17 v_ArrVal_3311))) (let ((.cse18 (select (select .cse21 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (let ((.cse20 (store .cse21 .cse18 v_ArrVal_3312))) (let ((.cse19 (select (select .cse20 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem52#1.base| v_ArrVal_3306) .cse16 v_ArrVal_3308) .cse17 v_ArrVal_3310) .cse18 v_ArrVal_3313) .cse19 v_ArrVal_3315) (select (select (store .cse20 .cse19 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3317))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-28 02:18:04,275 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse6 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_prenex_41 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_prenex_40 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3306 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse10 (store |c_#memory_$Pointer$#1.base| .cse6 v_ArrVal_3307))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_3309))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse9 .cse8 v_ArrVal_3311))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse0 (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse6 v_ArrVal_3306) .cse7 v_ArrVal_3308) .cse8 v_ArrVal_3310) .cse5 v_ArrVal_3313))) (< (select (select (let ((.cse2 (store .cse4 .cse5 v_ArrVal_3312))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store .cse0 .cse1 v_prenex_40) (select (select (store .cse2 .cse1 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_prenex_41))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (+ (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 1)))))))))) (forall ((v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3316 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_prenex_39 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (let ((.cse12 (let ((.cse14 (let ((.cse15 (let ((.cse16 (store |c_#memory_$Pointer$#1.base| .cse6 v_ArrVal_3307))) (store .cse16 (select (select .cse16 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3309)))) (store .cse15 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3311)))) (store .cse14 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3312)))) (let ((.cse13 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (= (select (select (let ((.cse11 (store .cse12 .cse13 v_prenex_39))) (store .cse11 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3316)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) .cse13)))) (forall ((v_ArrVal_3310 (Array Int Int)) (v_ArrVal_3311 (Array Int Int)) (v_ArrVal_3312 (Array Int Int)) (v_ArrVal_3313 (Array Int Int)) (v_ArrVal_3314 (Array Int Int)) (v_ArrVal_3315 (Array Int Int)) (v_ArrVal_3306 (Array Int Int)) (v_ArrVal_3317 (Array Int Int)) (v_ArrVal_3307 (Array Int Int)) (v_ArrVal_3308 (Array Int Int)) (v_ArrVal_3309 (Array Int Int))) (<= 0 (select (select (let ((.cse24 (store |c_#memory_$Pointer$#1.base| .cse6 v_ArrVal_3307))) (let ((.cse17 (select (select .cse24 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse23 (store .cse24 .cse17 v_ArrVal_3309))) (let ((.cse18 (select (select .cse23 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse22 (store .cse23 .cse18 v_ArrVal_3311))) (let ((.cse19 (select (select .cse22 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse21 (store .cse22 .cse19 v_ArrVal_3312))) (let ((.cse20 (select (select .cse21 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse6 v_ArrVal_3306) .cse17 v_ArrVal_3308) .cse18 v_ArrVal_3310) .cse19 v_ArrVal_3313) .cse20 v_ArrVal_3315) (select (select (store .cse21 .cse20 v_ArrVal_3314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_3317))))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))) is different from false [2024-11-28 02:18:09,201 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 02:18:09,202 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 02:18:09,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 02:18:09,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:18:09,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-28 02:18:09,405 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_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:842) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) 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:360) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 46 more [2024-11-28 02:18:09,411 INFO L158 Benchmark]: Toolchain (without parser) took 642392.47ms. Allocated memory was 142.6MB in the beginning and 604.0MB in the end (delta: 461.4MB). Free memory was 117.2MB in the beginning and 210.5MB in the end (delta: -93.3MB). Peak memory consumption was 370.6MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,411 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:18:09,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1296.85ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 83.3MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 162.92ms. Allocated memory is still 142.6MB. Free memory was 83.0MB in the beginning and 73.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,412 INFO L158 Benchmark]: Boogie Preprocessor took 381.02ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 102.3MB in the end (delta: -28.4MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,412 INFO L158 Benchmark]: RCFGBuilder took 3909.48ms. Allocated memory was 142.6MB in the beginning and 402.7MB in the end (delta: 260.0MB). Free memory was 102.3MB in the beginning and 192.2MB in the end (delta: -89.8MB). Peak memory consumption was 166.4MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,412 INFO L158 Benchmark]: TraceAbstraction took 636633.30ms. Allocated memory was 402.7MB in the beginning and 604.0MB in the end (delta: 201.3MB). Free memory was 191.4MB in the beginning and 210.5MB in the end (delta: -19.1MB). Peak memory consumption was 187.7MB. Max. memory is 16.1GB. [2024-11-28 02:18:09,413 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 142.6MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1296.85ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 83.3MB in the end (delta: 33.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 162.92ms. Allocated memory is still 142.6MB. Free memory was 83.0MB in the beginning and 73.9MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 381.02ms. Allocated memory is still 142.6MB. Free memory was 73.9MB in the beginning and 102.3MB in the end (delta: -28.4MB). Peak memory consumption was 25.0MB. Max. memory is 16.1GB. * RCFGBuilder took 3909.48ms. Allocated memory was 142.6MB in the beginning and 402.7MB in the end (delta: 260.0MB). Free memory was 102.3MB in the beginning and 192.2MB in the end (delta: -89.8MB). Peak memory consumption was 166.4MB. Max. memory is 16.1GB. * TraceAbstraction took 636633.30ms. Allocated memory was 402.7MB in the beginning and 604.0MB in the end (delta: 201.3MB). Free memory was 191.4MB in the beginning and 210.5MB in the end (delta: -19.1MB). Peak memory consumption was 187.7MB. 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_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:18:12,082 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:18:12,213 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 02:18:12,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:18:12,224 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:18:12,272 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:18:12,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:18:12,273 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:18:12,273 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:18:12,274 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:18:12,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:18:12,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:18:12,275 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:18:12,275 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:18:12,276 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:18:12,276 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:18:12,276 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:18:12,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:18:12,278 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:18:12,279 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:18:12,279 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:18:12,279 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:18:12,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:12,280 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:12,280 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:12,280 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:12,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:18:12,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:12,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:12,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:12,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:12,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:18:12,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:18:12,282 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:18:12,282 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:18:12,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:18:12,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:18:12,283 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:18:12,283 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:18:12,283 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_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 765142a1ef820c0c2cf2fa98a3978a1412f5a1196c629c20848264001100dcc9 [2024-11-28 02:18:12,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:18:12,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:18:12,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:18:12,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:18:12,708 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:18:12,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-11-28 02:18:15,845 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/d83713baf/dfb2cf0d020f48d69491aad69c6a7c3d/FLAG6b8d59474 [2024-11-28 02:18:16,304 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:18:16,307 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test4-1.i [2024-11-28 02:18:16,330 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/d83713baf/dfb2cf0d020f48d69491aad69c6a7c3d/FLAG6b8d59474 [2024-11-28 02:18:16,358 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/data/d83713baf/dfb2cf0d020f48d69491aad69c6a7c3d [2024-11-28 02:18:16,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:18:16,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:18:16,368 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:16,368 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:18:16,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:18:16,377 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:16" (1/1) ... [2024-11-28 02:18:16,378 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d00d6f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:16, skipping insertion in model container [2024-11-28 02:18:16,378 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:16" (1/1) ... [2024-11-28 02:18:16,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:18:16,894 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:16,941 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:16,946 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:16,952 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:16,971 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,017 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,020 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,025 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,037 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,068 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 02:18:17,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:17,092 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:18:17,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:17,300 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:18:17,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17 WrapperNode [2024-11-28 02:18:17,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:17,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:17,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:18:17,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:18:17,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,366 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,427 INFO L138 Inliner]: procedures = 179, calls = 336, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1150 [2024-11-28 02:18:17,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:17,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:18:17,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:18:17,428 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:18:17,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,442 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,450 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,571 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [307, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 82 writes are split as follows [82, 0]. [2024-11-28 02:18:17,571 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,629 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,651 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:18:17,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:18:17,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:18:17,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:18:17,688 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (1/1) ... [2024-11-28 02:18:17,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:17,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:18:17,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:18:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 02:18:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 02:18:17,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 02:18:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 02:18:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:18:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:18:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:18:17,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:18:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:18:17,783 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:18:17,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:18:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:18:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 02:18:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:18:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 02:18:17,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:18:17,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:18:18,117 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:18:18,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:18:18,123 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:18:18,192 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:18:24,157 INFO L? ?]: Removed 1324 outVars from TransFormulas that were not future-live. [2024-11-28 02:18:24,158 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:18:24,214 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:18:24,218 INFO L312 CfgBuilder]: Removed 34 assume(true) statements. [2024-11-28 02:18:24,219 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:24 BoogieIcfgContainer [2024-11-28 02:18:24,219 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:18:24,221 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:18:24,221 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:18:24,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:18:24,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:18:16" (1/3) ... [2024-11-28 02:18:24,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:24, skipping insertion in model container [2024-11-28 02:18:24,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:17" (2/3) ... [2024-11-28 02:18:24,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523f856b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:24, skipping insertion in model container [2024-11-28 02:18:24,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:24" (3/3) ... [2024-11-28 02:18:24,233 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test4-1.i [2024-11-28 02:18:24,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:18:24,251 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test4-1.i that has 4 procedures, 1256 locations, 1 initial locations, 36 loop locations, and 628 error locations. [2024-11-28 02:18:24,340 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:18:24,356 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;@3c9fd9bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:18:24,357 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2024-11-28 02:18:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand has 1251 states, 610 states have (on average 2.2295081967213113) internal successors, (1360), 1242 states have internal predecessors, (1360), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:18:24,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:18:24,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:24,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:18:24,370 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:24,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:24,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1476650634, now seen corresponding path program 1 times [2024-11-28 02:18:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1079924821] [2024-11-28 02:18:24,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:24,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:24,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:24,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:24,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:18:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:24,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:18:24,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:24,609 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:24,610 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:24,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079924821] [2024-11-28 02:18:24,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079924821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:24,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:24,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:24,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660387862] [2024-11-28 02:18:24,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:24,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:18:24,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:24,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:18:24,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:18:24,652 INFO L87 Difference]: Start difference. First operand has 1251 states, 610 states have (on average 2.2295081967213113) internal successors, (1360), 1242 states have internal predecessors, (1360), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) 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) [2024-11-28 02:18:24,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:24,738 INFO L93 Difference]: Finished difference Result 1232 states and 1304 transitions. [2024-11-28 02:18:24,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:18:24,740 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 [2024-11-28 02:18:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:24,774 INFO L225 Difference]: With dead ends: 1232 [2024-11-28 02:18:24,775 INFO L226 Difference]: Without dead ends: 1230 [2024-11-28 02:18:24,777 INFO L434 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 [2024-11-28 02:18:24,780 INFO L435 NwaCegarLoop]: 1304 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, 1304 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 [2024-11-28 02:18:24,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:18:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2024-11-28 02:18:24,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1230. [2024-11-28 02:18:24,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 600 states have (on average 2.1166666666666667) internal successors, (1270), 1221 states have internal predecessors, (1270), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:18:24,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1302 transitions. [2024-11-28 02:18:24,887 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1302 transitions. Word has length 6 [2024-11-28 02:18:24,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:24,888 INFO L471 AbstractCegarLoop]: Abstraction has 1230 states and 1302 transitions. [2024-11-28 02:18:24,889 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) [2024-11-28 02:18:24,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1302 transitions. [2024-11-28 02:18:24,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:18:24,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:24,893 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:18:24,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:18:25,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:25,097 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:25,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:25,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-11-28 02:18:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1746886602] [2024-11-28 02:18:25,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:25,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:25,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:25,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:18:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:25,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:18:25,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:25,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:18:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:25,331 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:25,331 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746886602] [2024-11-28 02:18:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746886602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:25,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:25,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:25,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255531592] [2024-11-28 02:18:25,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:25,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:18:25,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:25,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:18:25,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:25,340 INFO L87 Difference]: Start difference. First operand 1230 states and 1302 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:27,980 INFO L93 Difference]: Finished difference Result 1139 states and 1212 transitions. [2024-11-28 02:18:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:18:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:18:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:27,986 INFO L225 Difference]: With dead ends: 1139 [2024-11-28 02:18:27,986 INFO L226 Difference]: Without dead ends: 1139 [2024-11-28 02:18:27,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:27,988 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 1043 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:27,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 611 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:18:27,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-28 02:18:28,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1136. [2024-11-28 02:18:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 600 states have (on average 1.96) internal successors, (1176), 1127 states have internal predecessors, (1176), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:18:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1208 transitions. [2024-11-28 02:18:28,033 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1208 transitions. Word has length 6 [2024-11-28 02:18:28,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:28,033 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1208 transitions. [2024-11-28 02:18:28,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:28,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1208 transitions. [2024-11-28 02:18:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:18:28,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:28,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:18:28,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:18:28,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:28,235 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:28,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:28,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-11-28 02:18:28,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:28,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477484350] [2024-11-28 02:18:28,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:28,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:28,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:28,238 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:28,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:18:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:28,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:18:28,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:28,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:18:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:28,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:28,428 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:28,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477484350] [2024-11-28 02:18:28,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477484350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:28,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:28,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:28,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607097282] [2024-11-28 02:18:28,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:28,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:18:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:28,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:18:28,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:28,430 INFO L87 Difference]: Start difference. First operand 1136 states and 1208 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:31,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:31,849 INFO L93 Difference]: Finished difference Result 1457 states and 1549 transitions. [2024-11-28 02:18:31,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:18:31,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:18:31,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:31,855 INFO L225 Difference]: With dead ends: 1457 [2024-11-28 02:18:31,855 INFO L226 Difference]: Without dead ends: 1457 [2024-11-28 02:18:31,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:31,856 INFO L435 NwaCegarLoop]: 964 mSDtfsCounter, 523 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:31,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1446 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:18:31,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-11-28 02:18:31,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1303. [2024-11-28 02:18:31,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1303 states, 777 states have (on average 1.9253539253539254) internal successors, (1496), 1294 states have internal predecessors, (1496), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 02:18:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1303 states to 1303 states and 1528 transitions. [2024-11-28 02:18:31,893 INFO L78 Accepts]: Start accepts. Automaton has 1303 states and 1528 transitions. Word has length 6 [2024-11-28 02:18:31,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:31,893 INFO L471 AbstractCegarLoop]: Abstraction has 1303 states and 1528 transitions. [2024-11-28 02:18:31,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1303 states and 1528 transitions. [2024-11-28 02:18:31,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 02:18:31,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:31,894 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 02:18:31,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:18:32,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:32,106 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:32,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:32,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1423920564, now seen corresponding path program 1 times [2024-11-28 02:18:32,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:32,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355953033] [2024-11-28 02:18:32,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:32,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:32,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:32,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:32,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:18:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:32,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:18:32,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:32,306 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:32,306 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:32,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355953033] [2024-11-28 02:18:32,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355953033] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:18:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425673565] [2024-11-28 02:18:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:32,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:18:32,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:32,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:18:32,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:32,310 INFO L87 Difference]: Start difference. First operand 1303 states and 1528 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:33,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:33,448 INFO L93 Difference]: Finished difference Result 2086 states and 2445 transitions. [2024-11-28 02:18:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:18:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 02:18:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:33,458 INFO L225 Difference]: With dead ends: 2086 [2024-11-28 02:18:33,459 INFO L226 Difference]: Without dead ends: 2086 [2024-11-28 02:18:33,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:33,460 INFO L435 NwaCegarLoop]: 1195 mSDtfsCounter, 692 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:33,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 3350 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:18:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2024-11-28 02:18:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 1787. [2024-11-28 02:18:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1787 states, 1261 states have (on average 1.9088025376685172) internal successors, (2407), 1775 states have internal predecessors, (2407), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:18:33,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1787 states to 1787 states and 2445 transitions. [2024-11-28 02:18:33,514 INFO L78 Accepts]: Start accepts. Automaton has 1787 states and 2445 transitions. Word has length 6 [2024-11-28 02:18:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:33,514 INFO L471 AbstractCegarLoop]: Abstraction has 1787 states and 2445 transitions. [2024-11-28 02:18:33,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:33,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1787 states and 2445 transitions. [2024-11-28 02:18:33,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:18:33,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:33,515 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:33,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:18:33,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:33,716 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr626ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:33,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1191870723, now seen corresponding path program 1 times [2024-11-28 02:18:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998447656] [2024-11-28 02:18:33,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:33,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:33,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:33,720 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:33,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:18:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:33,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:18:33,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:33,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:33,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:33,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998447656] [2024-11-28 02:18:33,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998447656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:33,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:33,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:33,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973838527] [2024-11-28 02:18:33,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:33,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:18:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:33,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:18:33,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:33,904 INFO L87 Difference]: Start difference. First operand 1787 states and 2445 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:35,922 INFO L93 Difference]: Finished difference Result 1789 states and 2446 transitions. [2024-11-28 02:18:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:18:35,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:18:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:35,930 INFO L225 Difference]: With dead ends: 1789 [2024-11-28 02:18:35,930 INFO L226 Difference]: Without dead ends: 1785 [2024-11-28 02:18:35,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:18:35,931 INFO L435 NwaCegarLoop]: 1197 mSDtfsCounter, 1 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:35,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1870 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 02:18:35,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2024-11-28 02:18:35,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1785. [2024-11-28 02:18:35,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1259 states have (on average 1.9094519459888801) internal successors, (2404), 1773 states have internal predecessors, (2404), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:18:35,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 2442 transitions. [2024-11-28 02:18:36,000 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 2442 transitions. Word has length 7 [2024-11-28 02:18:36,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:36,000 INFO L471 AbstractCegarLoop]: Abstraction has 1785 states and 2442 transitions. [2024-11-28 02:18:36,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:36,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 2442 transitions. [2024-11-28 02:18:36,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:18:36,001 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:36,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:36,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:18:36,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:36,202 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:36,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262039, now seen corresponding path program 1 times [2024-11-28 02:18:36,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:36,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600766439] [2024-11-28 02:18:36,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:36,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:36,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:36,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:36,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:18:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:36,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:18:36,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:36,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:18:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:36,421 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:36,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:36,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600766439] [2024-11-28 02:18:36,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600766439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:36,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:36,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:18:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219319576] [2024-11-28 02:18:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:36,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:18:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:36,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:18:36,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:36,422 INFO L87 Difference]: Start difference. First operand 1785 states and 2442 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:39,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:39,877 INFO L93 Difference]: Finished difference Result 1770 states and 2404 transitions. [2024-11-28 02:18:39,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:18:39,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 02:18:39,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:39,885 INFO L225 Difference]: With dead ends: 1770 [2024-11-28 02:18:39,885 INFO L226 Difference]: Without dead ends: 1770 [2024-11-28 02:18:39,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:18:39,886 INFO L435 NwaCegarLoop]: 572 mSDtfsCounter, 1094 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:39,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1062 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-28 02:18:39,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2024-11-28 02:18:39,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1762. [2024-11-28 02:18:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1762 states, 1259 states have (on average 1.8729150119142177) internal successors, (2358), 1750 states have internal predecessors, (2358), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:18:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2396 transitions. [2024-11-28 02:18:39,928 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2396 transitions. Word has length 12 [2024-11-28 02:18:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:39,928 INFO L471 AbstractCegarLoop]: Abstraction has 1762 states and 2396 transitions. [2024-11-28 02:18:39,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2396 transitions. [2024-11-28 02:18:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 02:18:39,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:39,929 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:39,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:18:40,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:40,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:40,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262040, now seen corresponding path program 1 times [2024-11-28 02:18:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:40,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110794084] [2024-11-28 02:18:40,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:40,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:40,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:40,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:40,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:18:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:40,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:18:40,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:40,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:18:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:40,424 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:40,424 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:40,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110794084] [2024-11-28 02:18:40,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110794084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:40,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:40,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:18:40,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215197881] [2024-11-28 02:18:40,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:40,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:18:40,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:40,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:18:40,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:18:40,425 INFO L87 Difference]: Start difference. First operand 1762 states and 2396 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:45,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:45,461 INFO L93 Difference]: Finished difference Result 2050 states and 2577 transitions. [2024-11-28 02:18:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:18:45,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2024-11-28 02:18:45,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:45,468 INFO L225 Difference]: With dead ends: 2050 [2024-11-28 02:18:45,469 INFO L226 Difference]: Without dead ends: 2050 [2024-11-28 02:18:45,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:18:45,470 INFO L435 NwaCegarLoop]: 1026 mSDtfsCounter, 648 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 1428 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:45,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2122 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1428 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 02:18:45,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2024-11-28 02:18:45,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 1878. [2024-11-28 02:18:45,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1375 states have (on average 1.8167272727272727) internal successors, (2498), 1866 states have internal predecessors, (2498), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:18:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2536 transitions. [2024-11-28 02:18:45,516 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2536 transitions. Word has length 12 [2024-11-28 02:18:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:45,517 INFO L471 AbstractCegarLoop]: Abstraction has 1878 states and 2536 transitions. [2024-11-28 02:18:45,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:45,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2536 transitions. [2024-11-28 02:18:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 02:18:45,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:45,520 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:45,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:18:45,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:45,721 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:45,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1048779893, now seen corresponding path program 1 times [2024-11-28 02:18:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:45,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823555784] [2024-11-28 02:18:45,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:45,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:45,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:45,725 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:45,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:18:45,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:45,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:18:45,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:45,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:18:46,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:46,257 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:18:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:46,886 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:18:46,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823555784] [2024-11-28 02:18:46,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823555784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:18:46,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:18:46,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 02:18:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52193678] [2024-11-28 02:18:46,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:18:46,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:18:46,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:18:46,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:18:46,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:18:46,888 INFO L87 Difference]: Start difference. First operand 1878 states and 2536 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:59,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:59,548 INFO L93 Difference]: Finished difference Result 2443 states and 3113 transitions. [2024-11-28 02:18:59,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:18:59,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 02:18:59,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:59,554 INFO L225 Difference]: With dead ends: 2443 [2024-11-28 02:18:59,555 INFO L226 Difference]: Without dead ends: 2443 [2024-11-28 02:18:59,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:18:59,557 INFO L435 NwaCegarLoop]: 1028 mSDtfsCounter, 2145 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2147 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:59,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2147 Valid, 3403 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 02:18:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2443 states. [2024-11-28 02:18:59,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2443 to 2044. [2024-11-28 02:18:59,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2044 states, 1541 states have (on average 1.772874756651525) internal successors, (2732), 2032 states have internal predecessors, (2732), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:18:59,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2044 states to 2044 states and 2770 transitions. [2024-11-28 02:18:59,607 INFO L78 Accepts]: Start accepts. Automaton has 2044 states and 2770 transitions. Word has length 31 [2024-11-28 02:18:59,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:59,607 INFO L471 AbstractCegarLoop]: Abstraction has 2044 states and 2770 transitions. [2024-11-28 02:18:59,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:18:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand 2044 states and 2770 transitions. [2024-11-28 02:18:59,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:18:59,609 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:59,610 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:59,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:18:59,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:59,810 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:18:59,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:59,811 INFO L85 PathProgramCache]: Analyzing trace with hash -632494024, now seen corresponding path program 1 times [2024-11-28 02:18:59,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:18:59,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351920172] [2024-11-28 02:18:59,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:59,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:59,813 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:59,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:18:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:00,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:19:00,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:00,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:00,338 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:00,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351920172] [2024-11-28 02:19:00,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351920172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:00,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:00,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:19:00,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812157466] [2024-11-28 02:19:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:00,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:19:00,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:00,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:19:00,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:19:00,341 INFO L87 Difference]: Start difference. First operand 2044 states and 2770 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:00,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:00,434 INFO L93 Difference]: Finished difference Result 1929 states and 2516 transitions. [2024-11-28 02:19:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:19:00,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 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 44 [2024-11-28 02:19:00,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:00,441 INFO L225 Difference]: With dead ends: 1929 [2024-11-28 02:19:00,441 INFO L226 Difference]: Without dead ends: 1929 [2024-11-28 02:19:00,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:19:00,442 INFO L435 NwaCegarLoop]: 1174 mSDtfsCounter, 75 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:00,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 2321 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:19:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2024-11-28 02:19:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1906. [2024-11-28 02:19:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1403 states have (on average 1.766215253029223) internal successors, (2478), 1894 states have internal predecessors, (2478), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:19:00,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2516 transitions. [2024-11-28 02:19:00,499 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2516 transitions. Word has length 44 [2024-11-28 02:19:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:00,500 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 2516 transitions. [2024-11-28 02:19:00,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2516 transitions. [2024-11-28 02:19:00,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:19:00,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:00,501 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:00,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:19:00,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:00,702 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:00,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:00,703 INFO L85 PathProgramCache]: Analyzing trace with hash -717313938, now seen corresponding path program 1 times [2024-11-28 02:19:00,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:00,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064618831] [2024-11-28 02:19:00,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:00,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:00,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:00,708 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:00,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:19:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:00,930 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:19:00,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:01,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:01,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:01,001 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:01,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064618831] [2024-11-28 02:19:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064618831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:01,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:01,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:01,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139120580] [2024-11-28 02:19:01,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:01,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:19:01,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:01,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:19:01,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:01,002 INFO L87 Difference]: Start difference. First operand 1906 states and 2516 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:01,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:01,098 INFO L93 Difference]: Finished difference Result 1591 states and 2076 transitions. [2024-11-28 02:19:01,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:19:01,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 02:19:01,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:01,103 INFO L225 Difference]: With dead ends: 1591 [2024-11-28 02:19:01,103 INFO L226 Difference]: Without dead ends: 1591 [2024-11-28 02:19:01,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:19:01,104 INFO L435 NwaCegarLoop]: 1113 mSDtfsCounter, 56 mSDsluCounter, 2153 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:01,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3266 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:19:01,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2024-11-28 02:19:01,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1589. [2024-11-28 02:19:01,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1109 states have (on average 1.835888187556357) internal successors, (2036), 1577 states have internal predecessors, (2036), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:19:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2074 transitions. [2024-11-28 02:19:01,143 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2074 transitions. Word has length 47 [2024-11-28 02:19:01,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:01,143 INFO L471 AbstractCegarLoop]: Abstraction has 1589 states and 2074 transitions. [2024-11-28 02:19:01,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2074 transitions. [2024-11-28 02:19:01,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 02:19:01,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:01,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:01,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:19:01,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:01,345 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:01,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:01,346 INFO L85 PathProgramCache]: Analyzing trace with hash 489889826, now seen corresponding path program 1 times [2024-11-28 02:19:01,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:01,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645586104] [2024-11-28 02:19:01,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:01,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:01,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:01,349 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:01,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:19:01,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:01,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:19:01,587 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:01,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:19:01,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:19:02,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:19:02,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 02:19:02,373 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:19:02,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:19:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:02,403 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:02,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:02,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645586104] [2024-11-28 02:19:02,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645586104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:02,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:02,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:19:02,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387525761] [2024-11-28 02:19:02,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:02,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:19:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:02,405 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:19:02,405 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:02,405 INFO L87 Difference]: Start difference. First operand 1589 states and 2074 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:04,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:04,780 INFO L93 Difference]: Finished difference Result 1505 states and 1949 transitions. [2024-11-28 02:19:04,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:19:04,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 02:19:04,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:04,784 INFO L225 Difference]: With dead ends: 1505 [2024-11-28 02:19:04,784 INFO L226 Difference]: Without dead ends: 1505 [2024-11-28 02:19:04,784 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:04,785 INFO L435 NwaCegarLoop]: 375 mSDtfsCounter, 904 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:04,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 486 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:19:04,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2024-11-28 02:19:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1328. [2024-11-28 02:19:04,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 932 states have (on average 1.696351931330472) internal successors, (1581), 1316 states have internal predecessors, (1581), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:19:04,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1619 transitions. [2024-11-28 02:19:04,804 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1619 transitions. Word has length 55 [2024-11-28 02:19:04,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:04,804 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 1619 transitions. [2024-11-28 02:19:04,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:04,804 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1619 transitions. [2024-11-28 02:19:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:19:04,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:04,805 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:04,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:19:05,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:05,006 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:05,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash 225246615, now seen corresponding path program 1 times [2024-11-28 02:19:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423322615] [2024-11-28 02:19:05,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:05,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:05,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:05,010 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:05,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:19:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:05,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:19:05,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:05,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 02:19:05,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:19:05,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 02:19:05,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:05,295 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:05,296 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:05,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423322615] [2024-11-28 02:19:05,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423322615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:05,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:05,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:05,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072428726] [2024-11-28 02:19:05,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:05,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:19:05,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:05,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:19:05,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:19:05,298 INFO L87 Difference]: Start difference. First operand 1328 states and 1619 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:08,651 INFO L93 Difference]: Finished difference Result 1327 states and 1617 transitions. [2024-11-28 02:19:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:19:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-28 02:19:08,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:08,654 INFO L225 Difference]: With dead ends: 1327 [2024-11-28 02:19:08,655 INFO L226 Difference]: Without dead ends: 1327 [2024-11-28 02:19:08,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:19:08,655 INFO L435 NwaCegarLoop]: 1040 mSDtfsCounter, 2 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2679 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:08,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2679 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 02:19:08,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1327 states. [2024-11-28 02:19:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1327 to 1327. [2024-11-28 02:19:08,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 932 states have (on average 1.694206008583691) internal successors, (1579), 1315 states have internal predecessors, (1579), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:19:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1617 transitions. [2024-11-28 02:19:08,675 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1617 transitions. Word has length 60 [2024-11-28 02:19:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:08,676 INFO L471 AbstractCegarLoop]: Abstraction has 1327 states and 1617 transitions. [2024-11-28 02:19:08,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1617 transitions. [2024-11-28 02:19:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:19:08,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:08,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:08,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:19:08,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:08,877 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:08,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:08,878 INFO L85 PathProgramCache]: Analyzing trace with hash 225246616, now seen corresponding path program 1 times [2024-11-28 02:19:08,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:08,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [569050563] [2024-11-28 02:19:08,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:08,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:08,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:08,882 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:08,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:19:09,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:09,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:19:09,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:09,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:19:09,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:19:09,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 02:19:09,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 02:19:09,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:09,261 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:09,262 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:09,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569050563] [2024-11-28 02:19:09,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569050563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:09,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:09,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358911590] [2024-11-28 02:19:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:09,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:19:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:09,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:19:09,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:19:09,263 INFO L87 Difference]: Start difference. First operand 1327 states and 1617 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:13,700 INFO L93 Difference]: Finished difference Result 1326 states and 1615 transitions. [2024-11-28 02:19:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:19:13,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-28 02:19:13,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:13,703 INFO L225 Difference]: With dead ends: 1326 [2024-11-28 02:19:13,703 INFO L226 Difference]: Without dead ends: 1326 [2024-11-28 02:19:13,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:19:13,704 INFO L435 NwaCegarLoop]: 1040 mSDtfsCounter, 1 mSDsluCounter, 1654 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:13,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2694 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 02:19:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-11-28 02:19:13,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1326. [2024-11-28 02:19:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1326 states, 930 states have (on average 1.6956989247311829) internal successors, (1577), 1314 states have internal predecessors, (1577), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 02:19:13,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1326 states to 1326 states and 1615 transitions. [2024-11-28 02:19:13,723 INFO L78 Accepts]: Start accepts. Automaton has 1326 states and 1615 transitions. Word has length 60 [2024-11-28 02:19:13,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:13,723 INFO L471 AbstractCegarLoop]: Abstraction has 1326 states and 1615 transitions. [2024-11-28 02:19:13,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:19:13,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1326 states and 1615 transitions. [2024-11-28 02:19:13,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:19:13,724 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:13,724 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:13,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:19:13,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:13,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:13,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:13,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1107991330, now seen corresponding path program 1 times [2024-11-28 02:19:13,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:13,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444319158] [2024-11-28 02:19:13,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:13,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:13,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:13,928 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:13,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:19:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:14,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:19:14,188 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:14,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:19:14,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 02:19:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:14,340 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:14,340 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:14,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444319158] [2024-11-28 02:19:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444319158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:14,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:14,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:19:14,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364812194] [2024-11-28 02:19:14,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:14,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:19:14,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:14,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:19:14,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:19:14,343 INFO L87 Difference]: Start difference. First operand 1326 states and 1615 transitions. Second operand has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:19:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:18,773 INFO L93 Difference]: Finished difference Result 1344 states and 1645 transitions. [2024-11-28 02:19:18,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:19:18,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-11-28 02:19:18,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:18,778 INFO L225 Difference]: With dead ends: 1344 [2024-11-28 02:19:18,778 INFO L226 Difference]: Without dead ends: 1344 [2024-11-28 02:19:18,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:19:18,779 INFO L435 NwaCegarLoop]: 1023 mSDtfsCounter, 12 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 1551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:18,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3678 Invalid, 1551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:19:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2024-11-28 02:19:18,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 1335. [2024-11-28 02:19:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1335 states, 938 states have (on average 1.6929637526652452) internal successors, (1588), 1321 states have internal predecessors, (1588), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (28), 12 states have call predecessors, (28), 19 states have call successors, (28) [2024-11-28 02:19:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1335 states to 1335 states and 1635 transitions. [2024-11-28 02:19:18,804 INFO L78 Accepts]: Start accepts. Automaton has 1335 states and 1635 transitions. Word has length 68 [2024-11-28 02:19:18,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:18,804 INFO L471 AbstractCegarLoop]: Abstraction has 1335 states and 1635 transitions. [2024-11-28 02:19:18,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:19:18,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1335 states and 1635 transitions. [2024-11-28 02:19:18,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:19:18,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:18,806 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:18,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:19:19,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:19,010 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:19,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:19,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1107991329, now seen corresponding path program 1 times [2024-11-28 02:19:19,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:19,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494089617] [2024-11-28 02:19:19,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:19,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:19,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:19,012 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:19,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:19:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:19,284 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:19:19,287 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:19,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:19,317 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:19,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494089617] [2024-11-28 02:19:19,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494089617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:19,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:19,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:19:19,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251776219] [2024-11-28 02:19:19,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:19,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:19:19,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:19,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:19:19,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:19,319 INFO L87 Difference]: Start difference. First operand 1335 states and 1635 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:19:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:19,415 INFO L93 Difference]: Finished difference Result 1329 states and 1621 transitions. [2024-11-28 02:19:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:19:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2024-11-28 02:19:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:19,425 INFO L225 Difference]: With dead ends: 1329 [2024-11-28 02:19:19,429 INFO L226 Difference]: Without dead ends: 1329 [2024-11-28 02:19:19,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:19:19,430 INFO L435 NwaCegarLoop]: 1039 mSDtfsCounter, 0 mSDsluCounter, 2070 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:19,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3109 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:19:19,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-11-28 02:19:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2024-11-28 02:19:19,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 932 states have (on average 1.6952789699570816) internal successors, (1580), 1317 states have internal predecessors, (1580), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-28 02:19:19,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1621 transitions. [2024-11-28 02:19:19,458 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1621 transitions. Word has length 68 [2024-11-28 02:19:19,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:19,459 INFO L471 AbstractCegarLoop]: Abstraction has 1329 states and 1621 transitions. [2024-11-28 02:19:19,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:19:19,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1621 transitions. [2024-11-28 02:19:19,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 02:19:19,460 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:19,460 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:19,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:19:19,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:19,661 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:19,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash 801734818, now seen corresponding path program 1 times [2024-11-28 02:19:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263728203] [2024-11-28 02:19:19,662 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:19,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:19,664 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:19,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:19:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:19,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:19:19,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:19,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:19,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:20,082 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:20,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263728203] [2024-11-28 02:19:20,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263728203] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:19:20,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:19:20,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 02:19:20,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356756313] [2024-11-28 02:19:20,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:19:20,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:19:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:20,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:19:20,085 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:19:20,085 INFO L87 Difference]: Start difference. First operand 1329 states and 1621 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:19:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:20,409 INFO L93 Difference]: Finished difference Result 1341 states and 1640 transitions. [2024-11-28 02:19:20,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:19:20,412 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2024-11-28 02:19:20,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:20,417 INFO L225 Difference]: With dead ends: 1341 [2024-11-28 02:19:20,417 INFO L226 Difference]: Without dead ends: 1341 [2024-11-28 02:19:20,417 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:19:20,418 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 8 mSDsluCounter, 2071 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:20,418 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3109 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:19:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-28 02:19:20,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1339. [2024-11-28 02:19:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1339 states, 941 states have (on average 1.6950053134962806) internal successors, (1595), 1326 states have internal predecessors, (1595), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-28 02:19:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1339 states to 1339 states and 1636 transitions. [2024-11-28 02:19:20,441 INFO L78 Accepts]: Start accepts. Automaton has 1339 states and 1636 transitions. Word has length 69 [2024-11-28 02:19:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:20,441 INFO L471 AbstractCegarLoop]: Abstraction has 1339 states and 1636 transitions. [2024-11-28 02:19:20,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:19:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1339 states and 1636 transitions. [2024-11-28 02:19:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:19:20,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:20,442 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:20,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:19:20,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:20,647 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:20,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:20,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1610598946, now seen corresponding path program 2 times [2024-11-28 02:19:20,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:20,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271113430] [2024-11-28 02:19:20,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:19:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:20,650 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:20,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:19:34,985 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:19:34,985 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:19:34,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:19:35,003 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:35,141 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:19:35,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 02:19:35,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 02:19:35,404 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 02:19:35,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 02:19:35,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 02:19:35,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:19:35,492 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:35,620 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 02:19:35,620 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 25 treesize of output 24 [2024-11-28 02:19:35,696 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271113430] [2024-11-28 02:19:35,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271113430] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:19:35,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1724873497] [2024-11-28 02:19:35,696 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:19:35,697 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:19:35,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:19:35,707 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:19:35,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-28 02:19:36,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:19:36,765 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:19:36,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:19:36,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:36,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:37,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1724873497] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:19:37,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:19:37,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 02:19:37,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674891616] [2024-11-28 02:19:37,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:19:37,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 02:19:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:37,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 02:19:37,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-28 02:19:37,382 INFO L87 Difference]: Start difference. First operand 1339 states and 1636 transitions. Second operand has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:19:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:51,576 INFO L93 Difference]: Finished difference Result 1355 states and 1659 transitions. [2024-11-28 02:19:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 02:19:51,577 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-11-28 02:19:51,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:51,582 INFO L225 Difference]: With dead ends: 1355 [2024-11-28 02:19:51,582 INFO L226 Difference]: Without dead ends: 1349 [2024-11-28 02:19:51,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=389, Invalid=2053, Unknown=8, NotChecked=0, Total=2450 [2024-11-28 02:19:51,583 INFO L435 NwaCegarLoop]: 544 mSDtfsCounter, 947 mSDsluCounter, 5208 mSDsCounter, 0 mSdLazyCounter, 6029 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 5752 SdHoareTripleChecker+Invalid, 6071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 6029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:51,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 5752 Invalid, 6071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 6029 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2024-11-28 02:19:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1349 states. [2024-11-28 02:19:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1349 to 1347. [2024-11-28 02:19:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1347 states, 950 states have (on average 1.688421052631579) internal successors, (1604), 1334 states have internal predecessors, (1604), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-28 02:19:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1347 states to 1347 states and 1645 transitions. [2024-11-28 02:19:51,611 INFO L78 Accepts]: Start accepts. Automaton has 1347 states and 1645 transitions. Word has length 72 [2024-11-28 02:19:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:51,611 INFO L471 AbstractCegarLoop]: Abstraction has 1347 states and 1645 transitions. [2024-11-28 02:19:51,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:19:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1347 states and 1645 transitions. [2024-11-28 02:19:51,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 02:19:51,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:51,613 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:51,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:19:51,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-28 02:19:52,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:19:52,014 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:52,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:52,014 INFO L85 PathProgramCache]: Analyzing trace with hash 738033503, now seen corresponding path program 1 times [2024-11-28 02:19:52,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:52,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [824020235] [2024-11-28 02:19:52,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:52,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:52,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:52,017 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:52,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:19:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:52,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:19:52,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:52,519 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:52,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:19:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:53,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:53,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824020235] [2024-11-28 02:19:53,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824020235] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:19:53,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:19:53,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 02:19:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603939232] [2024-11-28 02:19:53,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:19:53,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 02:19:53,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:53,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 02:19:53,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:19:53,265 INFO L87 Difference]: Start difference. First operand 1347 states and 1645 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:19:56,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:56,467 INFO L93 Difference]: Finished difference Result 1371 states and 1684 transitions. [2024-11-28 02:19:56,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 02:19:56,468 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2024-11-28 02:19:56,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:56,472 INFO L225 Difference]: With dead ends: 1371 [2024-11-28 02:19:56,473 INFO L226 Difference]: Without dead ends: 1365 [2024-11-28 02:19:56,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 02:19:56,474 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 25 mSDsluCounter, 12404 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 13442 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:19:56,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 13442 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 02:19:56,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2024-11-28 02:19:56,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1365. [2024-11-28 02:19:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 968 states have (on average 1.6807851239669422) internal successors, (1627), 1352 states have internal predecessors, (1627), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-28 02:19:56,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1668 transitions. [2024-11-28 02:19:56,496 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1668 transitions. Word has length 78 [2024-11-28 02:19:56,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:56,496 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1668 transitions. [2024-11-28 02:19:56,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:19:56,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1668 transitions. [2024-11-28 02:19:56,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 02:19:56,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:56,498 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:56,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:19:56,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:56,698 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:19:56,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:56,699 INFO L85 PathProgramCache]: Analyzing trace with hash 924365407, now seen corresponding path program 2 times [2024-11-28 02:19:56,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:56,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485825822] [2024-11-28 02:19:56,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:19:56,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:19:56,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:56,701 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:19:56,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:20:02,622 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:20:02,622 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:20:02,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 02:20:02,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:20:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:20:03,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:20:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:20:05,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:20:05,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [485825822] [2024-11-28 02:20:05,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [485825822] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:20:05,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:20:05,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-28 02:20:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109464374] [2024-11-28 02:20:05,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:20:05,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 02:20:05,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:20:05,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 02:20:05,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 02:20:05,647 INFO L87 Difference]: Start difference. First operand 1365 states and 1668 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:20:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:19,804 INFO L93 Difference]: Finished difference Result 1407 states and 1743 transitions. [2024-11-28 02:20:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 02:20:19,805 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2024-11-28 02:20:19,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:19,809 INFO L225 Difference]: With dead ends: 1407 [2024-11-28 02:20:19,809 INFO L226 Difference]: Without dead ends: 1401 [2024-11-28 02:20:19,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=2784, Invalid=5958, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 02:20:19,811 INFO L435 NwaCegarLoop]: 1038 mSDtfsCounter, 31 mSDsluCounter, 32019 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 33057 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:19,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 33057 Invalid, 2119 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-28 02:20:19,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2024-11-28 02:20:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1401. [2024-11-28 02:20:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1004 states have (on average 1.6683266932270917) internal successors, (1675), 1388 states have internal predecessors, (1675), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2024-11-28 02:20:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1716 transitions. [2024-11-28 02:20:19,831 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1716 transitions. Word has length 90 [2024-11-28 02:20:19,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:19,831 INFO L471 AbstractCegarLoop]: Abstraction has 1401 states and 1716 transitions. [2024-11-28 02:20:19,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 02:20:19,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1716 transitions. [2024-11-28 02:20:19,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 02:20:19,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:19,832 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:19,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:20:20,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:20,033 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-11-28 02:20:20,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:20,033 INFO L85 PathProgramCache]: Analyzing trace with hash -404693025, now seen corresponding path program 3 times [2024-11-28 02:20:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:20:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [751444377] [2024-11-28 02:20:20,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:20:20,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:20,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:20:20,036 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:20:20,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47c15910-b2b8-4831-bfd8-510a6ef52ffe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process