./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/20020406-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:49:08,053 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:08,179 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:49:08,188 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:08,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:08,241 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:08,246 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:08,246 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:08,246 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:08,247 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:08,247 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:49:08,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:49:08,247 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:08,247 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:08,248 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:08,248 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:08,248 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:49:08,248 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:08,248 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:08,249 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:49:08,250 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:49:08,250 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:08,250 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:08,250 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:08,250 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:49:08,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:49:08,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:08,251 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:08,251 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:49:08,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:49:08,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:49:08,252 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:49:08,252 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:49:08,252 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:49:08,252 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:49:08,252 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_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2024-11-13 15:49:08,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:08,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:08,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:08,701 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:08,701 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:08,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety/20020406-1.i Unable to find full path for "g++" [2024-11-13 15:49:11,270 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:11,762 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:11,763 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/sv-benchmarks/c/memsafety/20020406-1.i [2024-11-13 15:49:11,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/d8d8896a5/674a75ff13e5436d80bbe67e7abed6c5/FLAGc6e8ed022 [2024-11-13 15:49:11,826 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/d8d8896a5/674a75ff13e5436d80bbe67e7abed6c5 [2024-11-13 15:49:11,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:11,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:11,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:11,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:11,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:11,843 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:11" (1/1) ... [2024-11-13 15:49:11,844 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2505aba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:11, skipping insertion in model container [2024-11-13 15:49:11,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:11" (1/1) ... [2024-11-13 15:49:11,916 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:12,524 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:49:12,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:12,589 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:12,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:12,772 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:12,772 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12 WrapperNode [2024-11-13 15:49:12,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:12,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:12,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:12,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:12,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,831 INFO L138 Inliner]: procedures = 283, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-11-13 15:49:12,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:12,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:12,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:12,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:12,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,888 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 9, 17, 2]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 16 writes are split as follows [0, 6, 8, 2]. [2024-11-13 15:49:12,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,889 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,918 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,928 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,948 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:12,949 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:12,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:12,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:12,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (1/1) ... [2024-11-13 15:49:12,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:13,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:13,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:13,031 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2024-11-13 15:49:13,031 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFnew [2024-11-13 15:49:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFfree [2024-11-13 15:49:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2024-11-13 15:49:13,032 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2024-11-13 15:49:13,032 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure FFmul [2024-11-13 15:49:13,033 INFO L138 BoogieDeclarations]: Found implementation of procedure FFmul [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 15:49:13,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2024-11-13 15:49:13,034 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 15:49:13,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFswap [2024-11-13 15:49:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2024-11-13 15:49:13,035 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2024-11-13 15:49:13,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:49:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 15:49:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 15:49:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 15:49:13,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:13,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:13,267 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:13,271 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:13,950 INFO L? ?]: Removed 149 outVars from TransFormulas that were not future-live. [2024-11-13 15:49:13,950 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:13,975 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:13,975 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:49:13,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:13 BoogieIcfgContainer [2024-11-13 15:49:13,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:13,979 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:49:13,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:49:13,985 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:49:13,985 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:49:11" (1/3) ... [2024-11-13 15:49:13,986 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598a6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:13, skipping insertion in model container [2024-11-13 15:49:13,986 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:12" (2/3) ... [2024-11-13 15:49:13,987 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2598a6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:13, skipping insertion in model container [2024-11-13 15:49:13,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:13" (3/3) ... [2024-11-13 15:49:13,988 INFO L112 eAbstractionObserver]: Analyzing ICFG 20020406-1.i [2024-11-13 15:49:14,009 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:49:14,013 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 20020406-1.i that has 9 procedures, 192 locations, 1 initial locations, 3 loop locations, and 55 error locations. [2024-11-13 15:49:14,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:14,113 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;@524b3619, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:14,114 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2024-11-13 15:49:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 95 states have (on average 1.694736842105263) internal successors, (161), 151 states have internal predecessors, (161), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 15:49:14,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:14,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:49:14,134 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:14,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash 231090006, now seen corresponding path program 1 times [2024-11-13 15:49:14,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:14,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99853410] [2024-11-13 15:49:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:14,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:14,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:14,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:14,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99853410] [2024-11-13 15:49:14,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99853410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:14,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:14,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:14,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715152506] [2024-11-13 15:49:14,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:14,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:14,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:14,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:14,571 INFO L87 Difference]: Start difference. First operand has 192 states, 95 states have (on average 1.694736842105263) internal successors, (161), 151 states have internal predecessors, (161), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:14,840 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2024-11-13 15:49:14,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:14,843 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 15:49:14,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:14,855 INFO L225 Difference]: With dead ends: 187 [2024-11-13 15:49:14,855 INFO L226 Difference]: Without dead ends: 185 [2024-11-13 15:49:14,857 INFO L431 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 [2024-11-13 15:49:14,863 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 15 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:14,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 361 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-13 15:49:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-13 15:49:14,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 92 states have (on average 1.641304347826087) internal successors, (151), 144 states have internal predecessors, (151), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 221 transitions. [2024-11-13 15:49:14,966 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 221 transitions. Word has length 5 [2024-11-13 15:49:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:14,966 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 221 transitions. [2024-11-13 15:49:14,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 221 transitions. [2024-11-13 15:49:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 15:49:14,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:14,967 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:49:14,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:49:14,967 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:14,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash 231090007, now seen corresponding path program 1 times [2024-11-13 15:49:14,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181426988] [2024-11-13 15:49:14,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:15,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:15,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:15,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181426988] [2024-11-13 15:49:15,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181426988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:15,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:15,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:15,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12139821] [2024-11-13 15:49:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:15,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:15,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:15,291 INFO L87 Difference]: Start difference. First operand 185 states and 221 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:15,525 INFO L93 Difference]: Finished difference Result 187 states and 223 transitions. [2024-11-13 15:49:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:15,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 15:49:15,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:15,527 INFO L225 Difference]: With dead ends: 187 [2024-11-13 15:49:15,528 INFO L226 Difference]: Without dead ends: 187 [2024-11-13 15:49:15,528 INFO L431 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 [2024-11-13 15:49:15,532 INFO L432 NwaCegarLoop]: 215 mSDtfsCounter, 4 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:15,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 376 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-13 15:49:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 186. [2024-11-13 15:49:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 94 states have (on average 1.6170212765957446) internal successors, (152), 145 states have internal predecessors, (152), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:15,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 222 transitions. [2024-11-13 15:49:15,566 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 222 transitions. Word has length 5 [2024-11-13 15:49:15,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:15,566 INFO L471 AbstractCegarLoop]: Abstraction has 186 states and 222 transitions. [2024-11-13 15:49:15,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:15,566 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 222 transitions. [2024-11-13 15:49:15,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:49:15,567 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:15,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:15,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:49:15,567 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:15,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:15,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1260804136, now seen corresponding path program 1 times [2024-11-13 15:49:15,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:15,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833370266] [2024-11-13 15:49:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:15,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833370266] [2024-11-13 15:49:15,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833370266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:15,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:15,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:15,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422380689] [2024-11-13 15:49:15,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:15,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:15,910 INFO L87 Difference]: Start difference. First operand 186 states and 222 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:16,192 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-11-13 15:49:16,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:16,194 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 15:49:16,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:16,196 INFO L225 Difference]: With dead ends: 182 [2024-11-13 15:49:16,197 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 15:49:16,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:16,198 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 14 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:16,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 490 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 15:49:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2024-11-13 15:49:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 92 states have (on average 1.5869565217391304) internal successors, (146), 139 states have internal predecessors, (146), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2024-11-13 15:49:16,215 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 7 [2024-11-13 15:49:16,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:16,215 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2024-11-13 15:49:16,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2024-11-13 15:49:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:49:16,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:16,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:16,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:49:16,216 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:16,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash -578927208, now seen corresponding path program 1 times [2024-11-13 15:49:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885360038] [2024-11-13 15:49:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:16,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:16,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:16,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:16,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885360038] [2024-11-13 15:49:16,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885360038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:16,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:16,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721528896] [2024-11-13 15:49:16,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:16,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:16,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:16,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:16,469 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:16,877 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-11-13 15:49:16,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:16,882 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 15:49:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:16,884 INFO L225 Difference]: With dead ends: 182 [2024-11-13 15:49:16,884 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 15:49:16,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:16,885 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 12 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:16,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 826 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 15:49:16,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2024-11-13 15:49:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 92 states have (on average 1.576086956521739) internal successors, (145), 138 states have internal predecessors, (145), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 215 transitions. [2024-11-13 15:49:16,915 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 215 transitions. Word has length 11 [2024-11-13 15:49:16,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:16,915 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 215 transitions. [2024-11-13 15:49:16,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,915 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 215 transitions. [2024-11-13 15:49:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:49:16,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:16,918 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:16,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:49:16,918 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:16,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:16,919 INFO L85 PathProgramCache]: Analyzing trace with hash -766874208, now seen corresponding path program 1 times [2024-11-13 15:49:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:16,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905262641] [2024-11-13 15:49:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:16,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:17,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905262641] [2024-11-13 15:49:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905262641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:17,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:17,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:49:17,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525786016] [2024-11-13 15:49:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:17,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:49:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:17,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:17,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:17,589 INFO L87 Difference]: Start difference. First operand 179 states and 215 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:18,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:18,144 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2024-11-13 15:49:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:49:18,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:49:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:18,147 INFO L225 Difference]: With dead ends: 195 [2024-11-13 15:49:18,147 INFO L226 Difference]: Without dead ends: 195 [2024-11-13 15:49:18,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:49:18,150 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 25 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:18,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1244 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:18,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-13 15:49:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2024-11-13 15:49:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 107 states have (on average 1.5046728971962617) internal successors, (161), 153 states have internal predecessors, (161), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2024-11-13 15:49:18,179 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 12 [2024-11-13 15:49:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:18,179 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2024-11-13 15:49:18,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2024-11-13 15:49:18,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:49:18,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:18,185 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:18,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:49:18,185 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:18,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:18,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2137970547, now seen corresponding path program 1 times [2024-11-13 15:49:18,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:18,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870722683] [2024-11-13 15:49:18,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:18,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:18,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:18,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870722683] [2024-11-13 15:49:18,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870722683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:18,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:18,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:18,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799412191] [2024-11-13 15:49:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:18,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:18,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:18,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:18,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:18,526 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-13 15:49:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:19,429 INFO L93 Difference]: Finished difference Result 196 states and 233 transitions. [2024-11-13 15:49:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:19,430 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 21 [2024-11-13 15:49:19,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:19,433 INFO L225 Difference]: With dead ends: 196 [2024-11-13 15:49:19,433 INFO L226 Difference]: Without dead ends: 196 [2024-11-13 15:49:19,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:19,437 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 54 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:19,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 563 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:49:19,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-13 15:49:19,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-13 15:49:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 107 states have (on average 1.485981308411215) internal successors, (159), 151 states have internal predecessors, (159), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 229 transitions. [2024-11-13 15:49:19,462 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 229 transitions. Word has length 21 [2024-11-13 15:49:19,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:19,462 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 229 transitions. [2024-11-13 15:49:19,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-13 15:49:19,465 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 229 transitions. [2024-11-13 15:49:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:49:19,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:19,466 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:19,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:49:19,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:19,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2137970548, now seen corresponding path program 1 times [2024-11-13 15:49:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:19,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006251664] [2024-11-13 15:49:19,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:19,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:19,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:20,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006251664] [2024-11-13 15:49:20,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006251664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:20,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:20,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:49:20,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743311024] [2024-11-13 15:49:20,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:20,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:49:20,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:20,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:49:20,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:49:20,239 INFO L87 Difference]: Start difference. First operand 193 states and 229 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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) [2024-11-13 15:49:21,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:21,307 INFO L93 Difference]: Finished difference Result 222 states and 266 transitions. [2024-11-13 15:49:21,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:21,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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 21 [2024-11-13 15:49:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:21,310 INFO L225 Difference]: With dead ends: 222 [2024-11-13 15:49:21,310 INFO L226 Difference]: Without dead ends: 216 [2024-11-13 15:49:21,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:49:21,311 INFO L432 NwaCegarLoop]: 176 mSDtfsCounter, 89 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:21,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 839 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:49:21,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-13 15:49:21,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 211. [2024-11-13 15:49:21,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 124 states have (on average 1.4516129032258065) internal successors, (180), 168 states have internal predecessors, (180), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:49:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 254 transitions. [2024-11-13 15:49:21,338 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 254 transitions. Word has length 21 [2024-11-13 15:49:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:21,339 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 254 transitions. [2024-11-13 15:49:21,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 8 states have internal predecessors, (19), 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) [2024-11-13 15:49:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 254 transitions. [2024-11-13 15:49:21,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:49:21,340 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:21,340 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:21,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:49:21,342 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:21,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:21,343 INFO L85 PathProgramCache]: Analyzing trace with hash 427055608, now seen corresponding path program 1 times [2024-11-13 15:49:21,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:21,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221680319] [2024-11-13 15:49:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:21,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:21,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221680319] [2024-11-13 15:49:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221680319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729365528] [2024-11-13 15:49:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:21,964 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:21,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:49:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:22,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:49:22,107 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:49:22,309 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729365528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2024-11-13 15:49:22,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161603135] [2024-11-13 15:49:22,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:22,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:22,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:49:22,312 INFO L87 Difference]: Start difference. First operand 211 states and 254 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-13 15:49:22,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:22,552 INFO L93 Difference]: Finished difference Result 209 states and 252 transitions. [2024-11-13 15:49:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:22,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 22 [2024-11-13 15:49:22,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:22,556 INFO L225 Difference]: With dead ends: 209 [2024-11-13 15:49:22,557 INFO L226 Difference]: Without dead ends: 209 [2024-11-13 15:49:22,558 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:49:22,559 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 11 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:22,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 836 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:22,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-13 15:49:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-13 15:49:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 124 states have (on average 1.435483870967742) internal successors, (178), 166 states have internal predecessors, (178), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:49:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 252 transitions. [2024-11-13 15:49:22,576 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 252 transitions. Word has length 22 [2024-11-13 15:49:22,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:22,576 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 252 transitions. [2024-11-13 15:49:22,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-13 15:49:22,576 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 252 transitions. [2024-11-13 15:49:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 15:49:22,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:22,577 INFO L215 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] [2024-11-13 15:49:22,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:49:22,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:22,782 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:22,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:22,782 INFO L85 PathProgramCache]: Analyzing trace with hash 353822119, now seen corresponding path program 1 times [2024-11-13 15:49:22,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:22,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405138723] [2024-11-13 15:49:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:22,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:23,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:23,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405138723] [2024-11-13 15:49:23,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405138723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:23,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921079489] [2024-11-13 15:49:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:23,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:23,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:23,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:49:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:23,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:49:23,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:23,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:23,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:49:23,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:49:23,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:49:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:49:23,887 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921079489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-11-13 15:49:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538597595] [2024-11-13 15:49:23,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:23,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:49:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:49:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:49:23,889 INFO L87 Difference]: Start difference. First operand 209 states and 252 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2024-11-13 15:49:24,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:24,421 INFO L93 Difference]: Finished difference Result 213 states and 260 transitions. [2024-11-13 15:49:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:24,422 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 23 [2024-11-13 15:49:24,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:24,424 INFO L225 Difference]: With dead ends: 213 [2024-11-13 15:49:24,424 INFO L226 Difference]: Without dead ends: 213 [2024-11-13 15:49:24,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:49:24,425 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 9 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:24,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1295 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:24,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-13 15:49:24,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 208. [2024-11-13 15:49:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 124 states have (on average 1.4274193548387097) internal successors, (177), 165 states have internal predecessors, (177), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:49:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 251 transitions. [2024-11-13 15:49:24,439 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 251 transitions. Word has length 23 [2024-11-13 15:49:24,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:24,440 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 251 transitions. [2024-11-13 15:49:24,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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) [2024-11-13 15:49:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 251 transitions. [2024-11-13 15:49:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 15:49:24,441 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:24,441 INFO L215 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] [2024-11-13 15:49:24,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:49:24,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 15:49:24,642 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:24,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash 353822120, now seen corresponding path program 1 times [2024-11-13 15:49:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256593534] [2024-11-13 15:49:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:24,873 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:25,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:25,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256593534] [2024-11-13 15:49:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256593534] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:25,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949673674] [2024-11-13 15:49:25,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:25,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:25,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:25,239 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:25,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:49:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:25,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:49:25,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:25,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:25,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:25,770 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 47 treesize of output 29 [2024-11-13 15:49:25,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 15:49:25,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 29 [2024-11-13 15:49:25,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2024-11-13 15:49:25,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-13 15:49:25,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2024-11-13 15:49:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:49:26,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949673674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:26,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 19 [2024-11-13 15:49:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954329620] [2024-11-13 15:49:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:26,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:49:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:49:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:49:26,026 INFO L87 Difference]: Start difference. First operand 208 states and 251 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) [2024-11-13 15:49:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:26,812 INFO L93 Difference]: Finished difference Result 212 states and 259 transitions. [2024-11-13 15:49:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:49:26,813 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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 23 [2024-11-13 15:49:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:26,815 INFO L225 Difference]: With dead ends: 212 [2024-11-13 15:49:26,815 INFO L226 Difference]: Without dead ends: 212 [2024-11-13 15:49:26,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:49:26,817 INFO L432 NwaCegarLoop]: 190 mSDtfsCounter, 22 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:26,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1276 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:49:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-13 15:49:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2024-11-13 15:49:26,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 124 states have (on average 1.4193548387096775) internal successors, (176), 164 states have internal predecessors, (176), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:49:26,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 250 transitions. [2024-11-13 15:49:26,829 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 250 transitions. Word has length 23 [2024-11-13 15:49:26,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:26,830 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 250 transitions. [2024-11-13 15:49:26,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 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) [2024-11-13 15:49:26,830 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 250 transitions. [2024-11-13 15:49:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:49:26,831 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:26,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:26,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:27,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:49:27,033 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:27,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash -204931934, now seen corresponding path program 1 times [2024-11-13 15:49:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657323302] [2024-11-13 15:49:27,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:27,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:27,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:27,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657323302] [2024-11-13 15:49:27,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657323302] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:27,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159079832] [2024-11-13 15:49:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:27,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:27,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:27,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:27,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:49:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:28,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:49:28,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:28,072 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 [2024-11-13 15:49:28,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:28,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:49:28,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:49:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:49:28,444 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:28,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159079832] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:28,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:28,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-11-13 15:49:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98462156] [2024-11-13 15:49:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:28,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:49:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:28,447 INFO L87 Difference]: Start difference. First operand 207 states and 250 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:49:28,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:28,996 INFO L93 Difference]: Finished difference Result 215 states and 256 transitions. [2024-11-13 15:49:29,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:49:29,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2024-11-13 15:49:29,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:29,002 INFO L225 Difference]: With dead ends: 215 [2024-11-13 15:49:29,002 INFO L226 Difference]: Without dead ends: 215 [2024-11-13 15:49:29,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:49:29,004 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 34 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:29,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1050 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:29,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-13 15:49:29,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 206. [2024-11-13 15:49:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 123 states have (on average 1.4065040650406504) internal successors, (173), 163 states have internal predecessors, (173), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:29,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 243 transitions. [2024-11-13 15:49:29,025 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 243 transitions. Word has length 35 [2024-11-13 15:49:29,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:29,025 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 243 transitions. [2024-11-13 15:49:29,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:49:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 243 transitions. [2024-11-13 15:49:29,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:49:29,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:29,027 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:29,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:49:29,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:49:29,229 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:29,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:29,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1544443431, now seen corresponding path program 1 times [2024-11-13 15:49:29,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808393310] [2024-11-13 15:49:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:29,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:29,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:29,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:29,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:29,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808393310] [2024-11-13 15:49:29,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808393310] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:29,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:29,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165361735] [2024-11-13 15:49:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:29,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:29,496 INFO L87 Difference]: Start difference. First operand 206 states and 243 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:30,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:30,188 INFO L93 Difference]: Finished difference Result 219 states and 259 transitions. [2024-11-13 15:49:30,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:30,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2024-11-13 15:49:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:30,191 INFO L225 Difference]: With dead ends: 219 [2024-11-13 15:49:30,191 INFO L226 Difference]: Without dead ends: 214 [2024-11-13 15:49:30,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:30,192 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 66 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:30,193 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 620 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:49:30,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-13 15:49:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 206. [2024-11-13 15:49:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 123 states have (on average 1.3983739837398375) internal successors, (172), 163 states have internal predecessors, (172), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:30,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 242 transitions. [2024-11-13 15:49:30,204 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 242 transitions. Word has length 36 [2024-11-13 15:49:30,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:30,205 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 242 transitions. [2024-11-13 15:49:30,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:30,205 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 242 transitions. [2024-11-13 15:49:30,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:49:30,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:30,206 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:30,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:49:30,207 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:30,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash 443814835, now seen corresponding path program 1 times [2024-11-13 15:49:30,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:30,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526112715] [2024-11-13 15:49:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:30,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:30,386 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:30,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:30,511 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 15:49:30,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:30,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526112715] [2024-11-13 15:49:30,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526112715] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:30,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:30,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:30,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622318454] [2024-11-13 15:49:30,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:30,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:30,516 INFO L87 Difference]: Start difference. First operand 206 states and 242 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:31,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:31,361 INFO L93 Difference]: Finished difference Result 208 states and 245 transitions. [2024-11-13 15:49:31,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:31,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-13 15:49:31,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:31,364 INFO L225 Difference]: With dead ends: 208 [2024-11-13 15:49:31,364 INFO L226 Difference]: Without dead ends: 208 [2024-11-13 15:49:31,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:31,365 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 54 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:31,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 543 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:49:31,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-13 15:49:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2024-11-13 15:49:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 123 states have (on average 1.3821138211382114) internal successors, (170), 161 states have internal predecessors, (170), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 240 transitions. [2024-11-13 15:49:31,379 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 240 transitions. Word has length 44 [2024-11-13 15:49:31,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:31,379 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 240 transitions. [2024-11-13 15:49:31,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 240 transitions. [2024-11-13 15:49:31,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:49:31,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:31,381 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:31,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:49:31,381 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:31,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:31,381 INFO L85 PathProgramCache]: Analyzing trace with hash 443814836, now seen corresponding path program 1 times [2024-11-13 15:49:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337912759] [2024-11-13 15:49:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:31,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:31,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:31,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337912759] [2024-11-13 15:49:32,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337912759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:32,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:49:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958296058] [2024-11-13 15:49:32,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:32,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:49:32,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:32,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:49:32,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:49:32,009 INFO L87 Difference]: Start difference. First operand 204 states and 240 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:32,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:32,914 INFO L93 Difference]: Finished difference Result 221 states and 262 transitions. [2024-11-13 15:49:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:32,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2024-11-13 15:49:32,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:32,917 INFO L225 Difference]: With dead ends: 221 [2024-11-13 15:49:32,917 INFO L226 Difference]: Without dead ends: 215 [2024-11-13 15:49:32,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:49:32,918 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 66 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:32,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 666 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:49:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-13 15:49:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2024-11-13 15:49:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 124 states have (on average 1.3790322580645162) internal successors, (171), 162 states have internal predecessors, (171), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:32,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 241 transitions. [2024-11-13 15:49:32,946 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 241 transitions. Word has length 44 [2024-11-13 15:49:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:32,946 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 241 transitions. [2024-11-13 15:49:32,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 241 transitions. [2024-11-13 15:49:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 15:49:32,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:32,948 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:32,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:49:32,948 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:32,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:32,950 INFO L85 PathProgramCache]: Analyzing trace with hash -552233092, now seen corresponding path program 2 times [2024-11-13 15:49:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:32,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367181953] [2024-11-13 15:49:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:33,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:33,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:33,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367181953] [2024-11-13 15:49:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367181953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:33,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110618915] [2024-11-13 15:49:33,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:49:33,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:33,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:33,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:33,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:49:33,928 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:49:33,928 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:49:33,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:49:33,938 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:49:34,121 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110618915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2024-11-13 15:49:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256281246] [2024-11-13 15:49:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:34,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:49:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:34,124 INFO L87 Difference]: Start difference. First operand 205 states and 241 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:34,405 INFO L93 Difference]: Finished difference Result 204 states and 240 transitions. [2024-11-13 15:49:34,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:49:34,406 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2024-11-13 15:49:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:34,408 INFO L225 Difference]: With dead ends: 204 [2024-11-13 15:49:34,408 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 15:49:34,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:34,409 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 11 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:34,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 820 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:34,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 15:49:34,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2024-11-13 15:49:34,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 160 states have internal predecessors, (169), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 239 transitions. [2024-11-13 15:49:34,426 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 239 transitions. Word has length 45 [2024-11-13 15:49:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:34,426 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 239 transitions. [2024-11-13 15:49:34,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 239 transitions. [2024-11-13 15:49:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 15:49:34,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:34,429 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:34,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:49:34,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:49:34,631 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:34,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 60643503, now seen corresponding path program 1 times [2024-11-13 15:49:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451643395] [2024-11-13 15:49:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:34,903 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:35,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:35,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451643395] [2024-11-13 15:49:35,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451643395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113524935] [2024-11-13 15:49:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:35,246 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:35,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:49:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:35,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:49:35,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:35,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:35,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:49:35,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:49:35,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:49:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:49:35,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:35,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113524935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:35,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:35,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-11-13 15:49:35,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455683022] [2024-11-13 15:49:35,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:35,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:49:35,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:35,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:49:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:49:35,775 INFO L87 Difference]: Start difference. First operand 203 states and 239 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:36,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:36,240 INFO L93 Difference]: Finished difference Result 207 states and 246 transitions. [2024-11-13 15:49:36,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:36,241 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-11-13 15:49:36,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:36,243 INFO L225 Difference]: With dead ends: 207 [2024-11-13 15:49:36,243 INFO L226 Difference]: Without dead ends: 207 [2024-11-13 15:49:36,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:49:36,244 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 9 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:36,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1262 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:36,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2024-11-13 15:49:36,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2024-11-13 15:49:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 124 states have (on average 1.3548387096774193) internal successors, (168), 159 states have internal predecessors, (168), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:36,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 238 transitions. [2024-11-13 15:49:36,256 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 238 transitions. Word has length 46 [2024-11-13 15:49:36,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:36,256 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 238 transitions. [2024-11-13 15:49:36,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:36,257 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 238 transitions. [2024-11-13 15:49:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 15:49:36,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:36,257 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:36,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:49:36,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:49:36,458 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:36,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:36,459 INFO L85 PathProgramCache]: Analyzing trace with hash 60643504, now seen corresponding path program 1 times [2024-11-13 15:49:36,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:36,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794389931] [2024-11-13 15:49:36,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:36,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:36,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:36,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:37,047 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:37,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:37,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:37,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794389931] [2024-11-13 15:49:37,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794389931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:37,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629885699] [2024-11-13 15:49:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:37,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:37,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:37,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:37,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:49:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:37,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:49:37,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:37,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:37,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:37,698 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 47 treesize of output 29 [2024-11-13 15:49:37,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 15:49:37,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 29 [2024-11-13 15:49:37,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2024-11-13 15:49:37,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-13 15:49:37,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2024-11-13 15:49:37,914 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:49:37,914 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:37,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629885699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:37,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:37,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 19 [2024-11-13 15:49:37,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980374973] [2024-11-13 15:49:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:37,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:49:37,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:49:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:49:37,918 INFO L87 Difference]: Start difference. First operand 202 states and 238 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:38,537 INFO L93 Difference]: Finished difference Result 206 states and 245 transitions. [2024-11-13 15:49:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:49:38,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-11-13 15:49:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:38,540 INFO L225 Difference]: With dead ends: 206 [2024-11-13 15:49:38,540 INFO L226 Difference]: Without dead ends: 206 [2024-11-13 15:49:38,541 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:49:38,541 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 22 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:38,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1414 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-13 15:49:38,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 201. [2024-11-13 15:49:38,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 124 states have (on average 1.346774193548387) internal successors, (167), 158 states have internal predecessors, (167), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:49:38,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 237 transitions. [2024-11-13 15:49:38,552 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 237 transitions. Word has length 46 [2024-11-13 15:49:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:38,553 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 237 transitions. [2024-11-13 15:49:38,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:49:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 237 transitions. [2024-11-13 15:49:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:49:38,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:38,557 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:38,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:49:38,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:49:38,762 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:38,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:38,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1471978389, now seen corresponding path program 1 times [2024-11-13 15:49:38,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:38,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884643966] [2024-11-13 15:49:38,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:38,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:39,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:39,371 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:49:40,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:40,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884643966] [2024-11-13 15:49:40,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884643966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:40,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570843704] [2024-11-13 15:49:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:40,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:40,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:40,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:40,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:49:40,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:40,611 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 15:49:40,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:40,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:49:40,824 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 35 treesize of output 17 [2024-11-13 15:49:41,123 INFO L349 Elim1Store]: treesize reduction 39, result has 18.8 percent of original size [2024-11-13 15:49:41,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 18 [2024-11-13 15:49:41,321 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:41,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:41,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570843704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:41,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:49:41,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 28 [2024-11-13 15:49:41,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133916771] [2024-11-13 15:49:41,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:41,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:49:41,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:49:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:49:41,325 INFO L87 Difference]: Start difference. First operand 201 states and 237 transitions. Second operand has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:49:43,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:43,931 INFO L93 Difference]: Finished difference Result 254 states and 305 transitions. [2024-11-13 15:49:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:49:43,932 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-13 15:49:43,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:43,934 INFO L225 Difference]: With dead ends: 254 [2024-11-13 15:49:43,934 INFO L226 Difference]: Without dead ends: 254 [2024-11-13 15:49:43,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:49:43,936 INFO L432 NwaCegarLoop]: 148 mSDtfsCounter, 554 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 363 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:43,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 958 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1385 Invalid, 23 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 15:49:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-13 15:49:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 228. [2024-11-13 15:49:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 143 states have (on average 1.3496503496503496) internal successors, (193), 177 states have internal predecessors, (193), 40 states have call successors, (40), 12 states have call predecessors, (40), 13 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2024-11-13 15:49:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 276 transitions. [2024-11-13 15:49:43,970 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 276 transitions. Word has length 53 [2024-11-13 15:49:43,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:43,970 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 276 transitions. [2024-11-13 15:49:43,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:49:43,971 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 276 transitions. [2024-11-13 15:49:43,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:49:43,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:43,972 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:43,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:44,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:49:44,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:49:44,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:44,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1471978390, now seen corresponding path program 1 times [2024-11-13 15:49:44,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:44,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448765247] [2024-11-13 15:49:44,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:44,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:45,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:49:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:45,605 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 15:49:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448765247] [2024-11-13 15:49:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448765247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943208675] [2024-11-13 15:49:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:46,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:46,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:46,774 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:46,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:49:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:47,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 15:49:47,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:48,263 INFO L349 Elim1Store]: treesize reduction 71, result has 15.5 percent of original size [2024-11-13 15:49:48,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 78 [2024-11-13 15:49:48,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:49:48,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 34 treesize of output 74 [2024-11-13 15:49:48,991 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-13 15:49:48,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 16 [2024-11-13 15:49:49,040 INFO L349 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2024-11-13 15:49:49,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 16 [2024-11-13 15:49:49,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:49:49,448 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943208675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:49:50,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:49:50,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 15] total 37 [2024-11-13 15:49:50,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124155310] [2024-11-13 15:49:50,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:50,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:49:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:50,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:49:50,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:49:50,027 INFO L87 Difference]: Start difference. First operand 228 states and 276 transitions. Second operand has 38 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 30 states have internal predecessors, (92), 7 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:49:52,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:49:58,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:03,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:08,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:15,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:19,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:21,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:21,814 INFO L93 Difference]: Finished difference Result 285 states and 351 transitions. [2024-11-13 15:50:21,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:50:21,815 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 30 states have internal predecessors, (92), 7 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2024-11-13 15:50:21,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:21,817 INFO L225 Difference]: With dead ends: 285 [2024-11-13 15:50:21,817 INFO L226 Difference]: Without dead ends: 279 [2024-11-13 15:50:21,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 894 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=430, Invalid=3992, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 15:50:21,820 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 326 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 3153 mSolverCounterSat, 169 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3153 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:21,821 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1822 Invalid, 3326 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [169 Valid, 3153 Invalid, 4 Unknown, 0 Unchecked, 27.9s Time] [2024-11-13 15:50:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-13 15:50:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 235. [2024-11-13 15:50:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 148 states have (on average 1.3310810810810811) internal successors, (197), 183 states have internal predecessors, (197), 41 states have call successors, (41), 13 states have call predecessors, (41), 14 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2024-11-13 15:50:21,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 282 transitions. [2024-11-13 15:50:21,837 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 282 transitions. Word has length 53 [2024-11-13 15:50:21,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:21,837 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 282 transitions. [2024-11-13 15:50:21,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 2.7058823529411766) internal successors, (92), 30 states have internal predecessors, (92), 7 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 15:50:21,837 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 282 transitions. [2024-11-13 15:50:21,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 15:50:21,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:21,838 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:21,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:50:22,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:22,043 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:50:22,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash 85701960, now seen corresponding path program 1 times [2024-11-13 15:50:22,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:22,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535528463] [2024-11-13 15:50:22,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:22,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:50:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:50:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,603 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 15:50:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:22,608 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 15:50:22,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:22,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535528463] [2024-11-13 15:50:22,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535528463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:50:22,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:50:22,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 15:50:22,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993939437] [2024-11-13 15:50:22,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:50:22,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:50:22,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:50:22,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:50:22,611 INFO L87 Difference]: Start difference. First operand 235 states and 282 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:50:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:50:24,936 INFO L93 Difference]: Finished difference Result 254 states and 304 transitions. [2024-11-13 15:50:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:50:24,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2024-11-13 15:50:24,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:50:24,938 INFO L225 Difference]: With dead ends: 254 [2024-11-13 15:50:24,938 INFO L226 Difference]: Without dead ends: 254 [2024-11-13 15:50:24,939 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:50:24,939 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 129 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:50:24,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 885 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 15:50:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-13 15:50:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 243. [2024-11-13 15:50:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 154 states have (on average 1.3311688311688312) internal successors, (205), 189 states have internal predecessors, (205), 42 states have call successors, (42), 14 states have call predecessors, (42), 15 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-11-13 15:50:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 292 transitions. [2024-11-13 15:50:24,954 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 292 transitions. Word has length 61 [2024-11-13 15:50:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:50:24,954 INFO L471 AbstractCegarLoop]: Abstraction has 243 states and 292 transitions. [2024-11-13 15:50:24,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:50:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 292 transitions. [2024-11-13 15:50:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-13 15:50:24,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:50:24,957 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:50:24,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 15:50:24,958 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:50:24,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:50:24,958 INFO L85 PathProgramCache]: Analyzing trace with hash 85701961, now seen corresponding path program 1 times [2024-11-13 15:50:24,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:50:24,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799243778] [2024-11-13 15:50:24,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:24,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:50:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:25,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:50:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:25,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:50:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:26,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 15:50:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:26,087 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 15:50:26,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:50:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799243778] [2024-11-13 15:50:26,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799243778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:50:26,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960322597] [2024-11-13 15:50:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:50:26,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:50:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:50:26,090 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:50:26,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:50:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:50:26,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:50:26,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:50:26,930 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 15:50:26,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:50:26,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960322597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:50:26,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:50:26,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2024-11-13 15:50:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369533491] [2024-11-13 15:50:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:50:26,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:50:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:50:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:50:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:50:26,932 INFO L87 Difference]: Start difference. First operand 243 states and 292 transitions. Second operand has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:50:30,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:35,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:39,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:43,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:47,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:51,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:55,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:50:59,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:51:04,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:51:04,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:04,409 INFO L93 Difference]: Finished difference Result 364 states and 441 transitions. [2024-11-13 15:51:04,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:51:04,409 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 61 [2024-11-13 15:51:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:04,412 INFO L225 Difference]: With dead ends: 364 [2024-11-13 15:51:04,412 INFO L226 Difference]: Without dead ends: 364 [2024-11-13 15:51:04,413 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:51:04,413 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 257 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 32 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:04,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 748 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 761 Invalid, 9 Unknown, 0 Unchecked, 37.4s Time] [2024-11-13 15:51:04,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-13 15:51:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 298. [2024-11-13 15:51:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 188 states have (on average 1.3670212765957446) internal successors, (257), 226 states have internal predecessors, (257), 58 states have call successors, (58), 18 states have call predecessors, (58), 20 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2024-11-13 15:51:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 380 transitions. [2024-11-13 15:51:04,432 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 380 transitions. Word has length 61 [2024-11-13 15:51:04,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:04,433 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 380 transitions. [2024-11-13 15:51:04,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:51:04,433 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 380 transitions. [2024-11-13 15:51:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:51:04,434 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:04,434 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:04,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:51:04,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-13 15:51:04,635 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:04,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:04,635 INFO L85 PathProgramCache]: Analyzing trace with hash -267003473, now seen corresponding path program 1 times [2024-11-13 15:51:04,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:04,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749619944] [2024-11-13 15:51:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:04,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,111 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:51:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,154 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 15:51:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 15:51:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,163 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 15:51:05,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:05,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749619944] [2024-11-13 15:51:05,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749619944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:05,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321547551] [2024-11-13 15:51:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:05,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:05,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:05,167 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:05,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:51:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:05,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-13 15:51:05,708 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:05,791 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:51:05,791 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:05,881 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 15:51:05,881 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 12 treesize of output 11 [2024-11-13 15:51:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:51:05,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321547551] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:05,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:05,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 10 [2024-11-13 15:51:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752446306] [2024-11-13 15:51:05,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:05,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:51:05,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:05,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:51:05,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:51:05,924 INFO L87 Difference]: Start difference. First operand 298 states and 380 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:51:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:08,250 INFO L93 Difference]: Finished difference Result 316 states and 402 transitions. [2024-11-13 15:51:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:51:08,251 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-11-13 15:51:08,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:08,257 INFO L225 Difference]: With dead ends: 316 [2024-11-13 15:51:08,257 INFO L226 Difference]: Without dead ends: 316 [2024-11-13 15:51:08,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:51:08,259 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 147 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:08,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1071 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:51:08,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-13 15:51:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 299. [2024-11-13 15:51:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 190 states have (on average 1.3631578947368421) internal successors, (259), 226 states have internal predecessors, (259), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2024-11-13 15:51:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 382 transitions. [2024-11-13 15:51:08,278 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 382 transitions. Word has length 71 [2024-11-13 15:51:08,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:08,279 INFO L471 AbstractCegarLoop]: Abstraction has 299 states and 382 transitions. [2024-11-13 15:51:08,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 4 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:51:08,279 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 382 transitions. [2024-11-13 15:51:08,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:51:08,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:08,285 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:08,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:51:08,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:08,490 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:08,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash -267003472, now seen corresponding path program 1 times [2024-11-13 15:51:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:08,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908187794] [2024-11-13 15:51:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:08,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:09,350 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:09,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:51:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:10,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 15:51:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:10,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 15:51:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:10,026 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 15:51:10,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908187794] [2024-11-13 15:51:10,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908187794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:10,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142669451] [2024-11-13 15:51:10,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:10,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:10,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:10,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:10,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:51:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:10,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:51:10,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:51:11,040 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:11,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 15:51:11,293 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:51:11,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-13 15:51:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-13 15:51:11,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142669451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:11,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:11,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 28 [2024-11-13 15:51:11,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227296832] [2024-11-13 15:51:11,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:11,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:51:11,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:11,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:51:11,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=733, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:51:11,476 INFO L87 Difference]: Start difference. First operand 299 states and 382 transitions. Second operand has 29 states, 25 states have (on average 3.04) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (14), 8 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 15:51:17,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:17,162 INFO L93 Difference]: Finished difference Result 479 states and 645 transitions. [2024-11-13 15:51:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:51:17,163 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.04) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (14), 8 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2024-11-13 15:51:17,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:17,166 INFO L225 Difference]: With dead ends: 479 [2024-11-13 15:51:17,166 INFO L226 Difference]: Without dead ends: 473 [2024-11-13 15:51:17,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=1562, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:51:17,167 INFO L432 NwaCegarLoop]: 278 mSDtfsCounter, 334 mSDsluCounter, 3619 mSDsCounter, 0 mSdLazyCounter, 3037 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 3897 SdHoareTripleChecker+Invalid, 3204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:17,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 3897 Invalid, 3204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3037 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-13 15:51:17,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-13 15:51:17,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 436. [2024-11-13 15:51:17,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 274 states have (on average 1.4416058394160585) internal successors, (395), 315 states have internal predecessors, (395), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (118), 107 states have call predecessors, (118), 106 states have call successors, (118) [2024-11-13 15:51:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 619 transitions. [2024-11-13 15:51:17,195 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 619 transitions. Word has length 71 [2024-11-13 15:51:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:17,195 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 619 transitions. [2024-11-13 15:51:17,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.04) internal successors, (76), 21 states have internal predecessors, (76), 8 states have call successors, (14), 8 states have call predecessors, (14), 4 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-13 15:51:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 619 transitions. [2024-11-13 15:51:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:51:17,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:17,197 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:17,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:51:17,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:17,398 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:17,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash 228289955, now seen corresponding path program 2 times [2024-11-13 15:51:17,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:17,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330013083] [2024-11-13 15:51:17,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:17,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:17,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:18,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:18,796 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-13 15:51:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:18,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2024-11-13 15:51:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:18,984 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 15:51:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:18,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2024-11-13 15:51:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 15:51:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330013083] [2024-11-13 15:51:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330013083] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283559248] [2024-11-13 15:51:19,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:51:19,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:19,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:19,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:19,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:51:19,619 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:51:19,620 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:19,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:51:19,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:20,546 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 15:51:20,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:20,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 15:51:20,930 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:51:20,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2024-11-13 15:51:21,116 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 15:51:21,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283559248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:21,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:21,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 11] total 32 [2024-11-13 15:51:21,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790335898] [2024-11-13 15:51:21,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:21,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:51:21,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:21,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:51:21,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 15:51:21,120 INFO L87 Difference]: Start difference. First operand 436 states and 619 transitions. Second operand has 33 states, 30 states have (on average 3.0) internal successors, (90), 25 states have internal predecessors, (90), 9 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-13 15:51:25,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:51:30,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:51:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:35,052 INFO L93 Difference]: Finished difference Result 473 states and 670 transitions. [2024-11-13 15:51:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 15:51:35,055 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.0) internal successors, (90), 25 states have internal predecessors, (90), 9 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) Word has length 79 [2024-11-13 15:51:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:35,058 INFO L225 Difference]: With dead ends: 473 [2024-11-13 15:51:35,059 INFO L226 Difference]: Without dead ends: 467 [2024-11-13 15:51:35,060 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 150 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=327, Invalid=2865, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 15:51:35,062 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 459 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 2906 mSolverCounterSat, 247 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 3155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2906 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:35,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 2098 Invalid, 3155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 2906 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2024-11-13 15:51:35,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-13 15:51:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 439. [2024-11-13 15:51:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 277 states have (on average 1.4332129963898916) internal successors, (397), 317 states have internal predecessors, (397), 106 states have call successors, (106), 24 states have call predecessors, (106), 25 states have return successors, (118), 107 states have call predecessors, (118), 106 states have call successors, (118) [2024-11-13 15:51:35,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 621 transitions. [2024-11-13 15:51:35,090 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 621 transitions. Word has length 79 [2024-11-13 15:51:35,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:35,090 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 621 transitions. [2024-11-13 15:51:35,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.0) internal successors, (90), 25 states have internal predecessors, (90), 9 states have call successors, (18), 9 states have call predecessors, (18), 5 states have return successors, (13), 8 states have call predecessors, (13), 9 states have call successors, (13) [2024-11-13 15:51:35,091 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 621 transitions. [2024-11-13 15:51:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:51:35,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:35,092 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:35,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:51:35,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:35,296 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:35,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1137434272, now seen corresponding path program 1 times [2024-11-13 15:51:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722308237] [2024-11-13 15:51:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:35,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,450 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 15:51:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 15:51:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:51:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 15:51:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 15:51:35,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:35,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722308237] [2024-11-13 15:51:35,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722308237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:35,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:51:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:51:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671757474] [2024-11-13 15:51:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:35,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:51:35,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:51:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:51:35,514 INFO L87 Difference]: Start difference. First operand 439 states and 621 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 15:51:36,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:36,172 INFO L93 Difference]: Finished difference Result 442 states and 621 transitions. [2024-11-13 15:51:36,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:51:36,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 79 [2024-11-13 15:51:36,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:36,176 INFO L225 Difference]: With dead ends: 442 [2024-11-13 15:51:36,177 INFO L226 Difference]: Without dead ends: 439 [2024-11-13 15:51:36,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:51:36,177 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 43 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:36,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 357 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:51:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-13 15:51:36,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2024-11-13 15:51:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 277 states have (on average 1.4223826714801444) internal successors, (394), 317 states have internal predecessors, (394), 106 states have call successors, (106), 24 states have call predecessors, (106), 25 states have return successors, (118), 107 states have call predecessors, (118), 106 states have call successors, (118) [2024-11-13 15:51:36,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 618 transitions. [2024-11-13 15:51:36,203 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 618 transitions. Word has length 79 [2024-11-13 15:51:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:36,204 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 618 transitions. [2024-11-13 15:51:36,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 15:51:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 618 transitions. [2024-11-13 15:51:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 15:51:36,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:36,205 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:36,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 15:51:36,205 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:36,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:36,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1699289658, now seen corresponding path program 1 times [2024-11-13 15:51:36,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:36,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24163114] [2024-11-13 15:51:36,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:36,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:36,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,281 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 15:51:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 15:51:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:51:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 15:51:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 15:51:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 15:51:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:37,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24163114] [2024-11-13 15:51:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24163114] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771050382] [2024-11-13 15:51:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:37,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:37,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:37,323 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:37,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:51:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:37,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 15:51:37,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:37,801 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:51:38,554 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-13 15:51:38,554 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:51:38,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771050382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:51:38,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:51:38,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2024-11-13 15:51:38,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505736214] [2024-11-13 15:51:38,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:51:38,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:51:38,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:38,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:51:38,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:51:38,558 INFO L87 Difference]: Start difference. First operand 439 states and 618 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:51:39,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:39,051 INFO L93 Difference]: Finished difference Result 441 states and 610 transitions. [2024-11-13 15:51:39,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:51:39,052 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2024-11-13 15:51:39,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:39,055 INFO L225 Difference]: With dead ends: 441 [2024-11-13 15:51:39,056 INFO L226 Difference]: Without dead ends: 430 [2024-11-13 15:51:39,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:51:39,057 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 59 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:39,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 898 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:51:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-13 15:51:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 333. [2024-11-13 15:51:39,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 212 states have (on average 1.3584905660377358) internal successors, (288), 247 states have internal predecessors, (288), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 15:51:39,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 432 transitions. [2024-11-13 15:51:39,075 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 432 transitions. Word has length 86 [2024-11-13 15:51:39,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:39,076 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 432 transitions. [2024-11-13 15:51:39,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:51:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 432 transitions. [2024-11-13 15:51:39,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 15:51:39,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:39,077 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:39,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:51:39,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 15:51:39,278 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:39,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:39,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1624708594, now seen corresponding path program 3 times [2024-11-13 15:51:39,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:39,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362714186] [2024-11-13 15:51:39,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:39,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:40,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:40,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-13 15:51:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 15:51:41,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:51:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-13 15:51:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 15:51:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:41,266 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 42 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-13 15:51:41,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362714186] [2024-11-13 15:51:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362714186] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:41,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050182063] [2024-11-13 15:51:41,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:51:41,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:41,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:41,270 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:41,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:51:41,908 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:51:41,909 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:41,914 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:51:41,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:42,429 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 15:51:42,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-13 15:51:43,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050182063] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:43,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:43,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 8, 8] total 36 [2024-11-13 15:51:43,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706165852] [2024-11-13 15:51:43,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:43,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 15:51:43,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:43,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 15:51:43,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:51:43,172 INFO L87 Difference]: Start difference. First operand 333 states and 432 transitions. Second operand has 36 states, 35 states have (on average 3.4) internal successors, (119), 30 states have internal predecessors, (119), 7 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-13 15:51:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:51:47,706 INFO L93 Difference]: Finished difference Result 380 states and 508 transitions. [2024-11-13 15:51:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 15:51:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.4) internal successors, (119), 30 states have internal predecessors, (119), 7 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 90 [2024-11-13 15:51:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:51:47,709 INFO L225 Difference]: With dead ends: 380 [2024-11-13 15:51:47,709 INFO L226 Difference]: Without dead ends: 362 [2024-11-13 15:51:47,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 778 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=569, Invalid=3337, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:51:47,711 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 159 mSDsluCounter, 2854 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:51:47,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 3014 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 15:51:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-13 15:51:47,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 338. [2024-11-13 15:51:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 217 states have (on average 1.3502304147465438) internal successors, (293), 252 states have internal predecessors, (293), 70 states have call successors, (70), 19 states have call predecessors, (70), 20 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 15:51:47,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 437 transitions. [2024-11-13 15:51:47,726 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 437 transitions. Word has length 90 [2024-11-13 15:51:47,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:51:47,726 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 437 transitions. [2024-11-13 15:51:47,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.4) internal successors, (119), 30 states have internal predecessors, (119), 7 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-13 15:51:47,726 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 437 transitions. [2024-11-13 15:51:47,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 15:51:47,727 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:51:47,728 INFO L215 NwaCegarLoop]: trace histogram [10, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:51:47,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:51:47,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:47,928 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:51:47,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:51:47,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1743654410, now seen corresponding path program 4 times [2024-11-13 15:51:47,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:51:47,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486957785] [2024-11-13 15:51:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:51:47,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:51:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:48,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:51:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 15:51:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 15:51:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 15:51:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 15:51:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2024-11-13 15:51:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:51:49,901 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 21 proven. 69 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 15:51:49,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:51:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486957785] [2024-11-13 15:51:49,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486957785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:51:49,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38956980] [2024-11-13 15:51:49,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:51:49,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:51:49,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:51:49,904 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:51:49,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:51:50,514 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:51:50,514 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:51:50,518 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-13 15:51:50,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:51:50,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 15:51:52,498 INFO L349 Elim1Store]: treesize reduction 6, result has 91.8 percent of original size [2024-11-13 15:51:52,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 53 treesize of output 83 [2024-11-13 15:51:53,354 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 29 proven. 16 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-13 15:51:53,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:51:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 26 proven. 16 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-13 15:51:55,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38956980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:51:55,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:51:55,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 20] total 56 [2024-11-13 15:51:55,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618416430] [2024-11-13 15:51:55,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:51:55,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:51:55,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:51:55,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:51:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2904, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:51:55,811 INFO L87 Difference]: Start difference. First operand 338 states and 437 transitions. Second operand has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 47 states have internal predecessors, (119), 15 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-13 15:51:59,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:04,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:08,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:12,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:16,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:20,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:25,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:29,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:33,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:37,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:41,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:45,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:49,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:53,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:52:57,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:01,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:05,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:09,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:17,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:21,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:26,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:53:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:27,436 INFO L93 Difference]: Finished difference Result 269 states and 306 transitions. [2024-11-13 15:53:27,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:53:27,437 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 47 states have internal predecessors, (119), 15 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 95 [2024-11-13 15:53:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:27,438 INFO L225 Difference]: With dead ends: 269 [2024-11-13 15:53:27,438 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 15:53:27,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 163 SyntacticMatches, 6 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1366 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=378, Invalid=5628, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 15:53:27,440 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 192 mSDsluCounter, 4055 mSDsCounter, 0 mSdLazyCounter, 3564 mSolverCounterSat, 97 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 4212 SdHoareTripleChecker+Invalid, 3708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3564 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:27,440 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 4212 Invalid, 3708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3564 Invalid, 47 Unknown, 0 Unchecked, 89.3s Time] [2024-11-13 15:53:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 15:53:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 242. [2024-11-13 15:53:27,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.2531645569620253) internal successors, (198), 191 states have internal predecessors, (198), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:53:27,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 272 transitions. [2024-11-13 15:53:27,447 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 272 transitions. Word has length 95 [2024-11-13 15:53:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:27,447 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 272 transitions. [2024-11-13 15:53:27,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 51 states have (on average 2.3333333333333335) internal successors, (119), 47 states have internal predecessors, (119), 15 states have call successors, (24), 10 states have call predecessors, (24), 9 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-13 15:53:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 272 transitions. [2024-11-13 15:53:27,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 15:53:27,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:27,449 INFO L215 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:27,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:53:27,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:53:27,649 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:53:27,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1651846294, now seen corresponding path program 1 times [2024-11-13 15:53:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:53:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563394104] [2024-11-13 15:53:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:27,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:53:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:28,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:53:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:28,311 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:53:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 15:53:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,083 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-13 15:53:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 15:53:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-13 15:53:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,092 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-13 15:53:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,095 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2024-11-13 15:53:29,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,099 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 56 proven. 27 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-13 15:53:29,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:53:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563394104] [2024-11-13 15:53:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563394104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821852212] [2024-11-13 15:53:29,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:29,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:29,101 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:29,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:53:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:29,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:53:29,654 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:53:31,251 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:31,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 15:53:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:53:31,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821852212] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:31,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:53:31,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 10] total 38 [2024-11-13 15:53:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076104723] [2024-11-13 15:53:31,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:31,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 15:53:31,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:53:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 15:53:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1346, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 15:53:31,966 INFO L87 Difference]: Start difference. First operand 242 states and 272 transitions. Second operand has 39 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 29 states have internal predecessors, (139), 10 states have call successors, (28), 9 states have call predecessors, (28), 5 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-13 15:53:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:35,706 INFO L93 Difference]: Finished difference Result 269 states and 308 transitions. [2024-11-13 15:53:35,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:53:35,707 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 29 states have internal predecessors, (139), 10 states have call successors, (28), 9 states have call predecessors, (28), 5 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 108 [2024-11-13 15:53:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:35,708 INFO L225 Difference]: With dead ends: 269 [2024-11-13 15:53:35,708 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 15:53:35,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 202 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=379, Invalid=3527, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 15:53:35,709 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 325 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 2012 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1420 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:35,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1420 Invalid, 2122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2012 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 15:53:35,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 15:53:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 242. [2024-11-13 15:53:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 159 states have (on average 1.2452830188679245) internal successors, (198), 191 states have internal predecessors, (198), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:53:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 272 transitions. [2024-11-13 15:53:35,717 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 272 transitions. Word has length 108 [2024-11-13 15:53:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:35,717 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 272 transitions. [2024-11-13 15:53:35,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 3.6578947368421053) internal successors, (139), 29 states have internal predecessors, (139), 10 states have call successors, (28), 9 states have call predecessors, (28), 5 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-13 15:53:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 272 transitions. [2024-11-13 15:53:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 15:53:35,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:35,718 INFO L215 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:35,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:53:35,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:53:35,922 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:53:35,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1329837792, now seen corresponding path program 1 times [2024-11-13 15:53:35,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:53:35,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948641564] [2024-11-13 15:53:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:53:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,248 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:53:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 15:53:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:53:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2024-11-13 15:53:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-11-13 15:53:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 15:53:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-11-13 15:53:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,863 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2024-11-13 15:53:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 15:53:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:53:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948641564] [2024-11-13 15:53:36,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948641564] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:36,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454222692] [2024-11-13 15:53:36,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:36,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:36,868 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:36,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:53:37,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:37,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-13 15:53:37,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:37,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:53:37,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:53:37,702 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 47 treesize of output 29 [2024-11-13 15:53:37,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2024-11-13 15:53:37,724 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 51 treesize of output 29 [2024-11-13 15:53:37,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 26 [2024-11-13 15:53:37,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 23 [2024-11-13 15:53:37,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 26 [2024-11-13 15:53:39,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2024-11-13 15:53:39,082 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 32 treesize of output 14 [2024-11-13 15:53:39,132 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-13 15:53:39,132 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:40,639 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:53:40,639 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 37 treesize of output 41 [2024-11-13 15:53:41,113 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-13 15:53:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454222692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:41,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:53:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 15] total 42 [2024-11-13 15:53:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707920008] [2024-11-13 15:53:41,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:41,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 15:53:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:53:41,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 15:53:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1580, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:53:41,115 INFO L87 Difference]: Start difference. First operand 242 states and 272 transitions. Second operand has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 35 states have internal predecessors, (143), 8 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-13 15:53:47,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:47,706 INFO L93 Difference]: Finished difference Result 274 states and 315 transitions. [2024-11-13 15:53:47,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:53:47,706 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 35 states have internal predecessors, (143), 8 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) Word has length 110 [2024-11-13 15:53:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:47,707 INFO L225 Difference]: With dead ends: 274 [2024-11-13 15:53:47,708 INFO L226 Difference]: Without dead ends: 268 [2024-11-13 15:53:47,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 196 SyntacticMatches, 11 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1450 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=613, Invalid=5087, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 15:53:47,710 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 243 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 3165 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 3285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:47,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2499 Invalid, 3285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3165 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 15:53:47,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-13 15:53:47,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 242. [2024-11-13 15:53:47,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 160 states have (on average 1.2375) internal successors, (198), 191 states have internal predecessors, (198), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:53:47,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 272 transitions. [2024-11-13 15:53:47,718 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 272 transitions. Word has length 110 [2024-11-13 15:53:47,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:47,719 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 272 transitions. [2024-11-13 15:53:47,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.4047619047619047) internal successors, (143), 35 states have internal predecessors, (143), 8 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (21), 8 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-13 15:53:47,719 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 272 transitions. [2024-11-13 15:53:47,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 15:53:47,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:47,720 INFO L215 NwaCegarLoop]: trace histogram [13, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:47,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:53:47,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:47,921 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:53:47,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash -976354533, now seen corresponding path program 1 times [2024-11-13 15:53:47,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:53:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341837679] [2024-11-13 15:53:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:53:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:53:48,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,789 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 15:53:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 15:53:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 15:53:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-13 15:53:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2024-11-13 15:53:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2024-11-13 15:53:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-13 15:53:48,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2024-11-13 15:53:48,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:53:48,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341837679] [2024-11-13 15:53:48,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341837679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:48,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554012263] [2024-11-13 15:53:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:48,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:48,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:48,837 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:48,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:53:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:49,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 15:53:49,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:49,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:53:49,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:53:49,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:53:49,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-11-13 15:53:50,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:53:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-13 15:53:50,567 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:50,823 INFO L349 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2024-11-13 15:53:50,823 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 18 treesize of output 17 [2024-11-13 15:53:50,840 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 65 proven. 6 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-13 15:53:50,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554012263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:50,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:53:50,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 26 [2024-11-13 15:53:50,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625301311] [2024-11-13 15:53:50,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:50,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:53:50,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:53:50,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:53:50,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:53:50,842 INFO L87 Difference]: Start difference. First operand 242 states and 272 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 22 states have internal predecessors, (104), 5 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-13 15:53:54,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:54,609 INFO L93 Difference]: Finished difference Result 300 states and 349 transitions. [2024-11-13 15:53:54,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:53:54,609 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 22 states have internal predecessors, (104), 5 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) Word has length 111 [2024-11-13 15:53:54,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:54,611 INFO L225 Difference]: With dead ends: 300 [2024-11-13 15:53:54,611 INFO L226 Difference]: Without dead ends: 294 [2024-11-13 15:53:54,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 215 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=357, Invalid=2295, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 15:53:54,612 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 214 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1987 SdHoareTripleChecker+Invalid, 2385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:54,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1987 Invalid, 2385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 15:53:54,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-13 15:53:54,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 242. [2024-11-13 15:53:54,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 161 states have (on average 1.2298136645962734) internal successors, (198), 191 states have internal predecessors, (198), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:53:54,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 272 transitions. [2024-11-13 15:53:54,621 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 272 transitions. Word has length 111 [2024-11-13 15:53:54,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:54,621 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 272 transitions. [2024-11-13 15:53:54,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 22 states have internal predecessors, (104), 5 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (20), 5 states have call predecessors, (20), 4 states have call successors, (20) [2024-11-13 15:53:54,622 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 272 transitions. [2024-11-13 15:53:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 15:53:54,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:54,623 INFO L215 NwaCegarLoop]: trace histogram [14, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:54,651 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:53:54,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:54,824 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:53:54,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:54,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1294020154, now seen corresponding path program 1 times [2024-11-13 15:53:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:53:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275102541] [2024-11-13 15:53:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:53:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:53:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-13 15:53:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2024-11-13 15:53:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,839 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 15:53:55,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 15:53:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:53:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,852 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 15:53:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 15:53:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,858 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:53:55,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:53:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:55,863 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-11-13 15:53:55,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:53:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275102541] [2024-11-13 15:53:55,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275102541] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:53:55,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924661590] [2024-11-13 15:53:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:55,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:55,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:55,866 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:55,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:53:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:56,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:53:56,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 15:53:56,893 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:57,669 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-13 15:53:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924661590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:53:57,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:53:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 12] total 35 [2024-11-13 15:53:57,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974610295] [2024-11-13 15:53:57,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:53:57,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:53:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:53:57,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:53:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:53:57,672 INFO L87 Difference]: Start difference. First operand 242 states and 272 transitions. Second operand has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 33 states have internal predecessors, (136), 2 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 15:56:54,563 WARN L286 SmtUtils]: Spent 2.94m on a formula simplification. DAG size of input: 69 DAG size of output: 62 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:56:59,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:56:59,278 INFO L93 Difference]: Finished difference Result 285 states and 340 transitions. [2024-11-13 15:56:59,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:56:59,278 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 33 states have internal predecessors, (136), 2 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 120 [2024-11-13 15:56:59,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:56:59,279 INFO L225 Difference]: With dead ends: 285 [2024-11-13 15:56:59,279 INFO L226 Difference]: Without dead ends: 279 [2024-11-13 15:56:59,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 179.8s TimeCoverageRelationStatistics Valid=884, Invalid=2898, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:56:59,281 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 158 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2212 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:56:59,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2212 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-13 15:56:59,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-13 15:56:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 260. [2024-11-13 15:56:59,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 179 states have (on average 1.2513966480446927) internal successors, (224), 209 states have internal predecessors, (224), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:56:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 298 transitions. [2024-11-13 15:56:59,290 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 298 transitions. Word has length 120 [2024-11-13 15:56:59,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:56:59,290 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 298 transitions. [2024-11-13 15:56:59,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.8857142857142857) internal successors, (136), 33 states have internal predecessors, (136), 2 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 15:56:59,291 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 298 transitions. [2024-11-13 15:56:59,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 15:56:59,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:56:59,292 INFO L215 NwaCegarLoop]: trace histogram [16, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:56:59,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:56:59,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:56:59,493 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:56:59,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:56:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -335568110, now seen corresponding path program 2 times [2024-11-13 15:56:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:56:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754238162] [2024-11-13 15:56:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:56:59,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:56:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:59,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 15:56:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:56:59,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 15:56:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,486 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-13 15:57:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 15:57:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,497 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 15:57:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:57:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-13 15:57:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,511 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 15:57:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 15:57:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 15:57:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 95 proven. 36 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 15:57:00,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:57:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754238162] [2024-11-13 15:57:00,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754238162] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:57:00,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481605382] [2024-11-13 15:57:00,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:00,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:00,522 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:00,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:57:01,175 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:57:01,176 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:01,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 15:57:01,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 11 proven. 144 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-13 15:57:01,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 95 proven. 36 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 15:57:02,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481605382] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:02,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:57:02,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 14] total 46 [2024-11-13 15:57:02,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347282736] [2024-11-13 15:57:02,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:02,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 15:57:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:57:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 15:57:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=1684, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 15:57:02,805 INFO L87 Difference]: Start difference. First operand 260 states and 298 transitions. Second operand has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 44 states have internal predecessors, (145), 2 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 15:57:16,616 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 38 DAG size of output: 31 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 15:57:27,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:27,563 INFO L93 Difference]: Finished difference Result 307 states and 370 transitions. [2024-11-13 15:57:27,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 15:57:27,564 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 44 states have internal predecessors, (145), 2 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 122 [2024-11-13 15:57:27,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:27,566 INFO L225 Difference]: With dead ends: 307 [2024-11-13 15:57:27,566 INFO L226 Difference]: Without dead ends: 295 [2024-11-13 15:57:27,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1631 ImplicationChecksByTransitivity, 23.7s TimeCoverageRelationStatistics Valid=1288, Invalid=4716, Unknown=2, NotChecked=0, Total=6006 [2024-11-13 15:57:27,568 INFO L432 NwaCegarLoop]: 157 mSDtfsCounter, 231 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:27,568 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2377 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 15:57:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-13 15:57:27,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 262. [2024-11-13 15:57:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 181 states have (on average 1.2430939226519337) internal successors, (225), 211 states have internal predecessors, (225), 37 states have call successors, (37), 16 states have call predecessors, (37), 16 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2024-11-13 15:57:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 299 transitions. [2024-11-13 15:57:27,578 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 299 transitions. Word has length 122 [2024-11-13 15:57:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:27,578 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 299 transitions. [2024-11-13 15:57:27,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.152173913043478) internal successors, (145), 44 states have internal predecessors, (145), 2 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-13 15:57:27,578 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 299 transitions. [2024-11-13 15:57:27,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:57:27,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:27,580 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:27,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:57:27,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 15:57:27,781 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:27,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash -485224686, now seen corresponding path program 3 times [2024-11-13 15:57:27,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:57:27,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194890980] [2024-11-13 15:57:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:57:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:57:27,903 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 15:57:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 15:57:28,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 15:57:28,028 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 15:57:28,031 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (54 of 55 remaining) [2024-11-13 15:57:28,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 55 remaining) [2024-11-13 15:57:28,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 55 remaining) [2024-11-13 15:57:28,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 55 remaining) [2024-11-13 15:57:28,033 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE (45 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE (44 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFnewErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 55 remaining) [2024-11-13 15:57:28,034 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 55 remaining) [2024-11-13 15:57:28,035 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location DUPFFexgcdErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 55 remaining) [2024-11-13 15:57:28,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 55 remaining) [2024-11-13 15:57:28,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 55 remaining) [2024-11-13 15:57:28,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-13 15:57:28,041 INFO L407 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:28,118 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:57:28,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:57:28 BoogieIcfgContainer [2024-11-13 15:57:28,121 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:57:28,122 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:57:28,122 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:57:28,122 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:57:28,123 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:13" (3/4) ... [2024-11-13 15:57:28,125 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 15:57:28,126 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:57:28,127 INFO L158 Benchmark]: Toolchain (without parser) took 496295.11ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 91.3MB in the beginning and 284.7MB in the end (delta: -193.5MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,127 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:57:28,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 938.32ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 60.5MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.61ms. Allocated memory is still 117.4MB. Free memory was 60.5MB in the beginning and 58.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:57:28,128 INFO L158 Benchmark]: Boogie Preprocessor took 115.58ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 54.7MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,128 INFO L158 Benchmark]: RCFGBuilder took 1027.00ms. Allocated memory is still 117.4MB. Free memory was 54.7MB in the beginning and 72.0MB in the end (delta: -17.3MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,128 INFO L158 Benchmark]: TraceAbstraction took 494142.42ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 71.4MB in the beginning and 284.8MB in the end (delta: -213.4MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,128 INFO L158 Benchmark]: Witness Printer took 4.29ms. Allocated memory is still 385.9MB. Free memory was 284.8MB in the beginning and 284.7MB in the end (delta: 50.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:57:28,133 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory is still 75.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 938.32ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 60.5MB in the end (delta: 30.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.61ms. Allocated memory is still 117.4MB. Free memory was 60.5MB in the beginning and 58.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 115.58ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 54.7MB in the end (delta: 3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1027.00ms. Allocated memory is still 117.4MB. Free memory was 54.7MB in the beginning and 72.0MB in the end (delta: -17.3MB). Peak memory consumption was 23.2MB. Max. memory is 16.1GB. * TraceAbstraction took 494142.42ms. Allocated memory was 117.4MB in the beginning and 385.9MB in the end (delta: 268.4MB). Free memory was 71.4MB in the beginning and 284.8MB in the end (delta: -213.4MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. * Witness Printer took 4.29ms. Allocated memory is still 385.9MB. Free memory was 284.8MB in the beginning and 284.7MB in the end (delta: 50.9kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 964]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 964. Possible FailurePath: [L966] DUPFF f, g, cf, cg, h; VAL [cf={14:0}, cg={15:0}] [L967] CALL, EXPR DUPFFnew(1) [L894] DUPFF ans = (DUPFF)malloc(sizeof(struct DUPFFstruct)); [L895] ans->coeffs = 0 VAL [\old(maxdeg)=1, ans={-2:0}, maxdeg=1] [L896] COND TRUE maxdeg >= 0 [L897] ans->coeffs = (FFelem*)malloc((maxdeg+1)*sizeof(FFelem)) VAL [\old(maxdeg)=1, ans={-2:0}, maxdeg=1] [L898] EXPR ans->coeffs VAL [\old(maxdeg)=1, ans={-2:0}, maxdeg=1] [L898] FCALL memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem)) [L900] ans->maxdeg = maxdeg VAL [\old(maxdeg)=1, ans={-2:0}] [L901] ans->deg = -1 VAL [\old(maxdeg)=1, ans={-2:0}] [L902] return ans; VAL [\old(maxdeg)=1, \result={-2:0}] [L967] RET, EXPR DUPFFnew(1) VAL [cf={14:0}, cg={15:0}] [L967] f = DUPFFnew(1) [L967] EXPR f->coeffs [L967] f->coeffs[1] = 1 [L967] f->deg = 1 [L968] CALL, EXPR DUPFFnew(2) [L894] DUPFF ans = (DUPFF)malloc(sizeof(struct DUPFFstruct)); [L895] ans->coeffs = 0 VAL [\old(maxdeg)=2, ans={-4:0}, maxdeg=2] [L896] COND TRUE maxdeg >= 0 [L897] ans->coeffs = (FFelem*)malloc((maxdeg+1)*sizeof(FFelem)) VAL [\old(maxdeg)=2, ans={-4:0}, maxdeg=2] [L898] EXPR ans->coeffs VAL [\old(maxdeg)=2, ans={-4:0}, maxdeg=2] [L898] FCALL memset(ans->coeffs, 0, (maxdeg+1)*sizeof(FFelem)) [L900] ans->maxdeg = maxdeg VAL [\old(maxdeg)=2, ans={-4:0}] [L901] ans->deg = -1 VAL [\old(maxdeg)=2, ans={-4:0}] [L902] return ans; VAL [\old(maxdeg)=2, \result={-4:0}] [L968] RET, EXPR DUPFFnew(2) VAL [cf={14:0}, cg={15:0}, f={-2:0}] [L968] g = DUPFFnew(2) [L968] EXPR g->coeffs [L968] g->coeffs[2] = 1 [L968] g->deg = 2 [L969] CALL, EXPR DUPFFexgcd(&cf, &cg, f, g) VAL [\old(f)={-2:0}, \old(fcofac)={14:0}, \old(g)={-4:0}, \old(gcofac)={15:0}] [L919] DUPFF u, v, uf, ug, vf, vg; [L920] FFelem q, lcu, lcvrecip, p; [L921] int df, dg, du, dv; VAL [\old(f)={-2:0}, \old(fcofac)={14:0}, \old(g)={-4:0}, \old(gcofac)={15:0}, f={-2:0}, fcofac={14:0}, g={-4:0}, gcofac={15:0}] [L922] CALL, EXPR DUPFFdeg(f) VAL [\old(f)={-2:0}] [L890] EXPR f->deg VAL [\old(f)={-2:0}] [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(f) VAL [\old(f)={-2:0}, \old(fcofac)={14:0}, \old(g)={-4:0}, \old(gcofac)={15:0}, f={-2:0}, fcofac={14:0}, g={-4:0}, gcofac={15:0}] [L922] CALL, EXPR DUPFFdeg(g) VAL [\old(f)={-4:0}] [L890] EXPR f->deg VAL [\old(f)={-4:0}] [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(g) VAL [\old(f)={-2:0}, \old(fcofac)={14:0}, \old(g)={-4:0}, \old(gcofac)={15:0}, f={-2:0}, fcofac={14:0}, g={-4:0}, gcofac={15:0}] [L922] COND TRUE DUPFFdeg(f) < DUPFFdeg(g) [L922] CALL, EXPR DUPFFexgcd(gcofac, fcofac, g, f) VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}] [L919] DUPFF u, v, uf, ug, vf, vg; [L920] FFelem q, lcu, lcvrecip, p; [L921] int df, dg, du, dv; VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L922] CALL, EXPR DUPFFdeg(f) VAL [\old(f)={-4:0}] [L890] EXPR f->deg VAL [\old(f)={-4:0}] [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(f) VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L922] CALL, EXPR DUPFFdeg(g) VAL [\old(f)={-2:0}] [L890] EXPR f->deg VAL [\old(f)={-2:0}] [L890] return f->deg; [L922] RET, EXPR DUPFFdeg(g) VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L922] COND FALSE !(DUPFFdeg(f) < DUPFFdeg(g)) [L923] CALL, EXPR DUPFFdeg(f) VAL [\old(f)={-4:0}] [L890] EXPR f->deg VAL [\old(f)={-4:0}] [L890] return f->deg; [L923] RET, EXPR DUPFFdeg(f) VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L923] DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1 VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L923] CALL, EXPR DUPFFdeg(g) VAL [\old(f)={-2:0}] [L890] EXPR f->deg VAL [\old(f)={-2:0}] [L890] return f->deg; [L923] RET, EXPR DUPFFdeg(g) VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L923] DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1 VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L923] COND FALSE !(DUPFFdeg(f) != 2 || DUPFFdeg(g) != 1) [L924] EXPR f->coeffs VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L924] EXPR f->coeffs[0] VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, f={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L924] COND TRUE f->coeffs[0] == 0 [L924] return f; VAL [\old(f)={-4:0}, \old(fcofac)={15:0}, \old(g)={-2:0}, \old(gcofac)={14:0}, \result={-4:0}, fcofac={15:0}, g={-2:0}, gcofac={14:0}] [L922] RET, EXPR DUPFFexgcd(gcofac, fcofac, g, f) VAL [\old(f)={-2:0}, \old(fcofac)={14:0}, \old(g)={-4:0}, \old(gcofac)={15:0}, f={-2:0}, fcofac={14:0}, g={-4:0}, gcofac={15:0}] [L922] return DUPFFexgcd(gcofac, fcofac, g, f); [L969] RET, EXPR DUPFFexgcd(&cf, &cg, f, g) VAL [cf={14:0}, cg={15:0}, f={-2:0}, g={-4:0}] [L969] h = DUPFFexgcd(&cf, &cg, f, g) [L970] h = h [L971] return 0; [L971] return 0; [L971] return 0; VAL [\result=0, f={-2:0}, g={-4:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 192 locations, 55 error locations. Started 1 CEGAR loops. OverallTime: 494.0s, OverallIterations: 34, TraceHistogramMax: 20, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 423.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 mSolverCounterUnknown, 4463 SdHoareTripleChecker+Valid, 203.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4347 mSDsluCounter, 44936 SdHoareTripleChecker+Invalid, 198.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39092 mSDsCounter, 2125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 35762 IncrementalHoareTripleChecker+Invalid, 37972 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2125 mSolverCounterUnsat, 5844 mSDtfsCounter, 35762 mSolverCounterSat, 0.6s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3297 GetRequests, 2331 SyntacticMatches, 56 SemanticMatches, 910 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10549 ImplicationChecksByTransitivity, 243.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=24, InterpolantAutomatonStates: 530, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 33 MinimizatonAttempts, 588 StatesRemovedByMinimization, 29 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.1s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 53.6s InterpolantComputationTime, 3412 NumberOfCodeBlocks, 3331 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 4199 ConstructedInterpolants, 171 QuantifiedInterpolants, 24756 SizeOfPredicates, 139 NumberOfNonLiveVariables, 11829 ConjunctsInSsa, 800 ConjunctsInUnsatCore, 64 InterpolantComputations, 22 PerfectInterpolantSequences, 3631/4664 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 15:57:28,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/20020406-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:57:30,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:57:30,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 15:57:30,939 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:57:30,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:57:30,977 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:57:30,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:57:30,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:57:30,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:57:30,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:57:30,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:57:30,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:57:30,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:57:30,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:57:30,981 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:57:30,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:57:30,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:57:30,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:57:30,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:57:30,982 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:57:30,983 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:57:30,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:57:30,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:57:30,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:57:30,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:57:30,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:57:30,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:57:30,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:57:30,985 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:57:30,985 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:57:30,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:57:30,986 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:57:30,986 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:57:30,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:57:30,986 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_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ecdf6fdf9ec72145fabb79894bcc278b3e5646bc4893dbabc4bb180fa53c5ae [2024-11-13 15:57:31,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:57:31,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:57:31,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:57:31,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:57:31,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:57:31,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety/20020406-1.i Unable to find full path for "g++" [2024-11-13 15:57:33,274 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:57:33,554 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:57:33,555 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/sv-benchmarks/c/memsafety/20020406-1.i [2024-11-13 15:57:33,572 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/5800e205a/6165e18506b0499fa17822487ec295f3/FLAG7e9de6380 [2024-11-13 15:57:33,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/data/5800e205a/6165e18506b0499fa17822487ec295f3 [2024-11-13 15:57:33,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:57:33,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:57:33,605 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:57:33,605 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:57:33,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:57:33,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:57:33" (1/1) ... [2024-11-13 15:57:33,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a17a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:33, skipping insertion in model container [2024-11-13 15:57:33,612 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:57:33" (1/1) ... [2024-11-13 15:57:33,663 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:57:34,345 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:57:34,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:57:34,405 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:57:34,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:57:34,613 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:57:34,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34 WrapperNode [2024-11-13 15:57:34,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:57:34,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:57:34,617 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:57:34,617 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:57:34,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,684 INFO L138 Inliner]: procedures = 286, calls = 76, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-13 15:57:34,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:57:34,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:57:34,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:57:34,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:57:34,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,741 INFO L175 MemorySlicer]: Split 30 memory accesses to 4 slices as follows [2, 9, 2, 17]. 57 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 16 writes are split as follows [0, 6, 2, 8]. [2024-11-13 15:57:34,741 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,742 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,757 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,765 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:57:34,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:57:34,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:57:34,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:57:34,772 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (1/1) ... [2024-11-13 15:57:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:57:34,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:34,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:57:34,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:57:34,843 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFdeg [2024-11-13 15:57:34,843 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFdeg [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:57:34,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:57:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:57:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 15:57:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFnew [2024-11-13 15:57:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFnew [2024-11-13 15:57:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFfree [2024-11-13 15:57:34,845 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFfree [2024-11-13 15:57:34,845 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFshift_add [2024-11-13 15:57:34,846 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFshift_add [2024-11-13 15:57:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:57:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:57:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:57:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:57:34,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-13 15:57:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:57:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:57:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:57:34,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 15:57:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure FFmul [2024-11-13 15:57:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure FFmul [2024-11-13 15:57:34,848 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFexgcd [2024-11-13 15:57:34,848 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFexgcd [2024-11-13 15:57:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:57:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:57:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:57:34,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:57:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:57:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 15:57:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFswap [2024-11-13 15:57:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFswap [2024-11-13 15:57:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure DUPFFcopy [2024-11-13 15:57:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure DUPFFcopy [2024-11-13 15:57:34,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:57:34,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:57:35,045 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:57:35,046 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:57:35,929 INFO L? ?]: Removed 149 outVars from TransFormulas that were not future-live. [2024-11-13 15:57:35,929 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:57:35,955 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:57:35,955 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:57:35,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:57:35 BoogieIcfgContainer [2024-11-13 15:57:35,956 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:57:35,959 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:57:35,959 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:57:35,964 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:57:35,964 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:57:33" (1/3) ... [2024-11-13 15:57:35,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a2831e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:57:35, skipping insertion in model container [2024-11-13 15:57:35,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:57:34" (2/3) ... [2024-11-13 15:57:35,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60a2831e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:57:35, skipping insertion in model container [2024-11-13 15:57:35,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:57:35" (3/3) ... [2024-11-13 15:57:35,967 INFO L112 eAbstractionObserver]: Analyzing ICFG 20020406-1.i [2024-11-13 15:57:35,982 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:57:35,983 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 20020406-1.i that has 9 procedures, 187 locations, 1 initial locations, 3 loop locations, and 55 error locations. [2024-11-13 15:57:36,038 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:57:36,054 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;@455a8aa7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:57:36,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2024-11-13 15:57:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 15:57:36,067 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:36,067 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:57:36,068 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:36,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash 226318641, now seen corresponding path program 1 times [2024-11-13 15:57:36,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:36,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770993509] [2024-11-13 15:57:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:36,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:36,086 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:36,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:57:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:36,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:57:36,263 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:36,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:57:36,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:36,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:36,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:36,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770993509] [2024-11-13 15:57:36,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770993509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:36,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:36,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:57:36,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268025527] [2024-11-13 15:57:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:36,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:57:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:36,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:57:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:57:36,451 INFO L87 Difference]: Start difference. First operand has 187 states, 90 states have (on average 1.7333333333333334) internal successors, (156), 146 states have internal predecessors, (156), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:36,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:36,809 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-11-13 15:57:36,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:57:36,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 15:57:36,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:36,823 INFO L225 Difference]: With dead ends: 182 [2024-11-13 15:57:36,823 INFO L226 Difference]: Without dead ends: 180 [2024-11-13 15:57:36,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:57:36,828 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 15 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:36,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 351 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:57:36,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-13 15:57:36,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-13 15:57:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 139 states have internal predecessors, (146), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2024-11-13 15:57:36,919 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 5 [2024-11-13 15:57:36,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:36,919 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2024-11-13 15:57:36,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:36,920 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2024-11-13 15:57:36,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 15:57:36,920 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:36,920 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 15:57:36,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:57:37,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:37,121 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting DUPFFnewErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:37,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 226318642, now seen corresponding path program 1 times [2024-11-13 15:57:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686100378] [2024-11-13 15:57:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:37,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:37,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:37,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:37,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:57:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:37,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:57:37,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:37,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:57:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:37,279 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:37,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:37,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686100378] [2024-11-13 15:57:37,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686100378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:37,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:37,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:57:37,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51379991] [2024-11-13 15:57:37,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:37,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:57:37,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:37,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:57:37,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:57:37,283 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:37,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:37,716 INFO L93 Difference]: Finished difference Result 182 states and 218 transitions. [2024-11-13 15:57:37,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:57:37,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-13 15:57:37,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:37,719 INFO L225 Difference]: With dead ends: 182 [2024-11-13 15:57:37,719 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 15:57:37,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:57:37,720 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 4 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:37,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 366 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:57:37,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 15:57:37,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2024-11-13 15:57:37,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 89 states have (on average 1.651685393258427) internal successors, (147), 140 states have internal predecessors, (147), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2024-11-13 15:57:37,742 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 5 [2024-11-13 15:57:37,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:37,742 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2024-11-13 15:57:37,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2024-11-13 15:57:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:57:37,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:37,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:37,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:37,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:37,944 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting DUPFFnewErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:37,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1551118605, now seen corresponding path program 1 times [2024-11-13 15:57:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:37,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30086430] [2024-11-13 15:57:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:37,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:37,953 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:37,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:57:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:38,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:57:38,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:38,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:57:38,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:57:38,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:57:38,216 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 [2024-11-13 15:57:38,235 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:57:38,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:57:38,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:38,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:38,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:38,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30086430] [2024-11-13 15:57:38,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30086430] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:38,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:38,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:57:38,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961403476] [2024-11-13 15:57:38,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:38,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:57:38,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:38,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:57:38,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:57:38,259 INFO L87 Difference]: Start difference. First operand 181 states and 217 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:38,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:38,572 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2024-11-13 15:57:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:57:38,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 15:57:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:38,577 INFO L225 Difference]: With dead ends: 177 [2024-11-13 15:57:38,577 INFO L226 Difference]: Without dead ends: 177 [2024-11-13 15:57:38,577 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:57:38,578 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 28 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:38,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 349 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:57:38,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-13 15:57:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 175. [2024-11-13 15:57:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 87 states have (on average 1.6206896551724137) internal successors, (141), 134 states have internal predecessors, (141), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:38,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2024-11-13 15:57:38,596 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 7 [2024-11-13 15:57:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:38,596 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2024-11-13 15:57:38,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2024-11-13 15:57:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:57:38,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:38,597 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:38,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:57:38,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:38,798 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting DUPFFnewErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:38,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:38,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1245800243, now seen corresponding path program 1 times [2024-11-13 15:57:38,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:38,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [899392] [2024-11-13 15:57:38,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:38,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:38,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:38,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:38,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:57:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:38,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:57:38,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:38,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:57:38,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:57:39,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:57:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:39,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:39,032 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899392] [2024-11-13 15:57:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:39,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:39,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:57:39,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944228729] [2024-11-13 15:57:39,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:39,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:57:39,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:57:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:39,033 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:39,908 INFO L93 Difference]: Finished difference Result 177 states and 213 transitions. [2024-11-13 15:57:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:57:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 15:57:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:39,911 INFO L225 Difference]: With dead ends: 177 [2024-11-13 15:57:39,911 INFO L226 Difference]: Without dead ends: 177 [2024-11-13 15:57:39,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:57:39,912 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 12 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:39,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 801 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:57:39,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-13 15:57:39,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 174. [2024-11-13 15:57:39,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 87 states have (on average 1.6091954022988506) internal successors, (140), 133 states have internal predecessors, (140), 35 states have call successors, (35), 8 states have call predecessors, (35), 8 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 210 transitions. [2024-11-13 15:57:39,924 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 210 transitions. Word has length 11 [2024-11-13 15:57:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:39,924 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 210 transitions. [2024-11-13 15:57:39,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 210 transitions. [2024-11-13 15:57:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:57:39,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:39,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:39,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:57:40,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:40,130 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:40,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:40,130 INFO L85 PathProgramCache]: Analyzing trace with hash -34898075, now seen corresponding path program 1 times [2024-11-13 15:57:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266989718] [2024-11-13 15:57:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:40,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:40,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:40,133 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:40,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:57:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:40,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:57:40,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:40,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:57:40,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:57:40,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:57:40,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:57:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:40,506 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:40,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:40,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266989718] [2024-11-13 15:57:40,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266989718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:40,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:40,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:57:40,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244818573] [2024-11-13 15:57:40,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:40,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:57:40,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:40,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:57:40,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:57:40,508 INFO L87 Difference]: Start difference. First operand 174 states and 210 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:41,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:41,111 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2024-11-13 15:57:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:57:41,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:57:41,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:41,113 INFO L225 Difference]: With dead ends: 190 [2024-11-13 15:57:41,113 INFO L226 Difference]: Without dead ends: 190 [2024-11-13 15:57:41,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:57:41,114 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 31 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:41,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 758 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:57:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-13 15:57:41,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2024-11-13 15:57:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 102 states have (on average 1.5294117647058822) internal successors, (156), 148 states have internal predecessors, (156), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:41,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2024-11-13 15:57:41,131 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 12 [2024-11-13 15:57:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:41,131 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2024-11-13 15:57:41,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:57:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2024-11-13 15:57:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:57:41,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:41,132 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:41,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:41,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:41,335 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:41,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:41,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1242243095, now seen corresponding path program 1 times [2024-11-13 15:57:41,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:41,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1579361935] [2024-11-13 15:57:41,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:41,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:41,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:41,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:41,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:57:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:41,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:57:41,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:41,548 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:41,548 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:41,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579361935] [2024-11-13 15:57:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579361935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:41,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:41,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:57:41,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712101100] [2024-11-13 15:57:41,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:41,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:57:41,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:41,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:57:41,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:41,550 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-13 15:57:42,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:42,145 INFO L93 Difference]: Finished difference Result 188 states and 224 transitions. [2024-11-13 15:57:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:57:42,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 21 [2024-11-13 15:57:42,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:42,148 INFO L225 Difference]: With dead ends: 188 [2024-11-13 15:57:42,148 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 15:57:42,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:42,149 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 10 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 758 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:42,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 758 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:57:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 15:57:42,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2024-11-13 15:57:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 102 states have (on average 1.5098039215686274) internal successors, (154), 146 states have internal predecessors, (154), 35 states have call successors, (35), 9 states have call predecessors, (35), 9 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 224 transitions. [2024-11-13 15:57:42,171 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 224 transitions. Word has length 21 [2024-11-13 15:57:42,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:42,171 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 224 transitions. [2024-11-13 15:57:42,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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) [2024-11-13 15:57:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 224 transitions. [2024-11-13 15:57:42,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 15:57:42,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:42,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:42,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:57:42,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:42,373 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:42,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:42,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1242243094, now seen corresponding path program 1 times [2024-11-13 15:57:42,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:42,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536699574] [2024-11-13 15:57:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:42,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:42,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:42,375 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:42,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:57:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:42,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:57:42,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:42,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:42,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:42,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536699574] [2024-11-13 15:57:42,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536699574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:42,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:42,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:57:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517494172] [2024-11-13 15:57:42,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:42,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:57:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:57:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:42,607 INFO L87 Difference]: Start difference. First operand 188 states and 224 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-13 15:57:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:42,812 INFO L93 Difference]: Finished difference Result 202 states and 242 transitions. [2024-11-13 15:57:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:57:42,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 21 [2024-11-13 15:57:42,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:42,815 INFO L225 Difference]: With dead ends: 202 [2024-11-13 15:57:42,815 INFO L226 Difference]: Without dead ends: 196 [2024-11-13 15:57:42,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:57:42,816 INFO L432 NwaCegarLoop]: 200 mSDtfsCounter, 13 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:42,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 772 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:57:42,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-13 15:57:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2024-11-13 15:57:42,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 109 states have (on average 1.4862385321100917) internal successors, (162), 154 states have internal predecessors, (162), 35 states have call successors, (35), 9 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:42,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 236 transitions. [2024-11-13 15:57:42,827 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 236 transitions. Word has length 21 [2024-11-13 15:57:42,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:42,828 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 236 transitions. [2024-11-13 15:57:42,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2024-11-13 15:57:42,828 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 236 transitions. [2024-11-13 15:57:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:57:42,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:42,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:42,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:57:43,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:43,029 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:43,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:43,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1280203240, now seen corresponding path program 1 times [2024-11-13 15:57:43,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:43,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1633462695] [2024-11-13 15:57:43,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:43,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:43,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:43,032 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:43,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:57:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:43,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:57:43,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:43,258 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:43,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:43,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:43,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633462695] [2024-11-13 15:57:43,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633462695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:43,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:57:43,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-13 15:57:43,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680159743] [2024-11-13 15:57:43,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:43,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:57:43,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:43,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:57:43,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:57:43,424 INFO L87 Difference]: Start difference. First operand 196 states and 236 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-13 15:57:44,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:44,069 INFO L93 Difference]: Finished difference Result 227 states and 276 transitions. [2024-11-13 15:57:44,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:57:44,070 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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 22 [2024-11-13 15:57:44,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:44,072 INFO L225 Difference]: With dead ends: 227 [2024-11-13 15:57:44,072 INFO L226 Difference]: Without dead ends: 221 [2024-11-13 15:57:44,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:57:44,073 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 65 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:44,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1148 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:57:44,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-13 15:57:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2024-11-13 15:57:44,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 127 states have (on average 1.4645669291338583) internal successors, (186), 171 states have internal predecessors, (186), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 260 transitions. [2024-11-13 15:57:44,084 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 260 transitions. Word has length 22 [2024-11-13 15:57:44,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:44,084 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 260 transitions. [2024-11-13 15:57:44,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2024-11-13 15:57:44,085 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 260 transitions. [2024-11-13 15:57:44,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 15:57:44,085 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:44,085 INFO L215 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] [2024-11-13 15:57:44,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:57:44,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:44,286 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:44,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1576273046, now seen corresponding path program 2 times [2024-11-13 15:57:44,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36622462] [2024-11-13 15:57:44,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:44,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:44,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:44,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:44,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:57:44,429 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:57:44,429 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:44,432 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:57:44,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:44,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 15:57:44,599 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:44,599 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:44,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36622462] [2024-11-13 15:57:44,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36622462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:44,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:44,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:57:44,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680167727] [2024-11-13 15:57:44,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:44,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:57:44,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:44,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:57:44,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:57:44,601 INFO L87 Difference]: Start difference. First operand 214 states and 260 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-13 15:57:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:45,267 INFO L93 Difference]: Finished difference Result 212 states and 258 transitions. [2024-11-13 15:57:45,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:57:45,268 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 25 [2024-11-13 15:57:45,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:45,269 INFO L225 Difference]: With dead ends: 212 [2024-11-13 15:57:45,270 INFO L226 Difference]: Without dead ends: 212 [2024-11-13 15:57:45,270 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:57:45,270 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 9 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:45,271 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 950 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:57:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-11-13 15:57:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-11-13 15:57:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 127 states have (on average 1.4488188976377954) internal successors, (184), 169 states have internal predecessors, (184), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 258 transitions. [2024-11-13 15:57:45,285 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 258 transitions. Word has length 25 [2024-11-13 15:57:45,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:45,285 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 258 transitions. [2024-11-13 15:57:45,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2024-11-13 15:57:45,285 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 258 transitions. [2024-11-13 15:57:45,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:57:45,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:45,287 INFO L215 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] [2024-11-13 15:57:45,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:45,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:45,491 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:45,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1619824016, now seen corresponding path program 1 times [2024-11-13 15:57:45,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:45,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737085680] [2024-11-13 15:57:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:45,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:45,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:45,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:45,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:57:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:45,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:57:45,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:45,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:57:46,449 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737085680] [2024-11-13 15:57:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737085680] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:46,450 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:57:46,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2024-11-13 15:57:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644910859] [2024-11-13 15:57:46,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:46,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:57:46,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:46,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:57:46,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:57:46,451 INFO L87 Difference]: Start difference. First operand 212 states and 258 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-13 15:57:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:48,249 INFO L93 Difference]: Finished difference Result 258 states and 321 transitions. [2024-11-13 15:57:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:57:48,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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 26 [2024-11-13 15:57:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:48,255 INFO L225 Difference]: With dead ends: 258 [2024-11-13 15:57:48,256 INFO L226 Difference]: Without dead ends: 240 [2024-11-13 15:57:48,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=383, Invalid=949, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 15:57:48,257 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 85 mSDsluCounter, 1882 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:48,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2080 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:57:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-13 15:57:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 221. [2024-11-13 15:57:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 136 states have (on average 1.4411764705882353) internal successors, (196), 178 states have internal predecessors, (196), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 270 transitions. [2024-11-13 15:57:48,278 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 270 transitions. Word has length 26 [2024-11-13 15:57:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:48,279 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 270 transitions. [2024-11-13 15:57:48,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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) [2024-11-13 15:57:48,280 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 270 transitions. [2024-11-13 15:57:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:57:48,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:48,280 INFO L215 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:48,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:48,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:48,481 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:48,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1761507600, now seen corresponding path program 2 times [2024-11-13 15:57:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2133127192] [2024-11-13 15:57:48,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:48,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:48,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:48,485 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:48,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:57:48,646 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:57:48,647 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:48,650 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:57:48,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:48,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:57:48,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:57:48,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:57:48,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 15:57:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 15:57:48,968 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:48,968 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:48,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133127192] [2024-11-13 15:57:48,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133127192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:48,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:48,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:57:48,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346207796] [2024-11-13 15:57:48,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:48,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:57:48,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:48,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:57:48,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:57:48,970 INFO L87 Difference]: Start difference. First operand 221 states and 270 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-13 15:57:49,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:49,808 INFO L93 Difference]: Finished difference Result 225 states and 278 transitions. [2024-11-13 15:57:49,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:57:49,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 30 [2024-11-13 15:57:49,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:49,813 INFO L225 Difference]: With dead ends: 225 [2024-11-13 15:57:49,817 INFO L226 Difference]: Without dead ends: 225 [2024-11-13 15:57:49,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:57:49,818 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 13 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:49,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 963 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:57:49,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-13 15:57:49,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 220. [2024-11-13 15:57:49,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 136 states have (on average 1.4338235294117647) internal successors, (195), 177 states have internal predecessors, (195), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:49,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 269 transitions. [2024-11-13 15:57:49,847 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 269 transitions. Word has length 30 [2024-11-13 15:57:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:49,848 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 269 transitions. [2024-11-13 15:57:49,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-13 15:57:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 269 transitions. [2024-11-13 15:57:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:57:49,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:49,849 INFO L215 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:49,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:57:50,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:50,049 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:50,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:50,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1761507599, now seen corresponding path program 1 times [2024-11-13 15:57:50,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:50,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030148962] [2024-11-13 15:57:50,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:50,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:50,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:50,052 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:50,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:57:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:50,235 INFO L255 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:57:50,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:50,269 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 10 treesize of output 9 [2024-11-13 15:57:50,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:57:50,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:57:50,636 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 29 treesize of output 17 [2024-11-13 15:57:50,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:57:50,669 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:57:50,681 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 29 treesize of output 17 [2024-11-13 15:57:50,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:57:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 15:57:50,875 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:50,875 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:50,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030148962] [2024-11-13 15:57:50,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030148962] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:50,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:50,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:57:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880970651] [2024-11-13 15:57:50,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:50,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:57:50,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:50,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:57:50,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:57:50,877 INFO L87 Difference]: Start difference. First operand 220 states and 269 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-13 15:57:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:52,027 INFO L93 Difference]: Finished difference Result 224 states and 277 transitions. [2024-11-13 15:57:52,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:57:52,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 30 [2024-11-13 15:57:52,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:52,029 INFO L225 Difference]: With dead ends: 224 [2024-11-13 15:57:52,029 INFO L226 Difference]: Without dead ends: 224 [2024-11-13 15:57:52,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:57:52,029 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 16 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:52,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1232 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:57:52,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2024-11-13 15:57:52,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2024-11-13 15:57:52,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 136 states have (on average 1.4264705882352942) internal successors, (194), 176 states have internal predecessors, (194), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2024-11-13 15:57:52,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 268 transitions. [2024-11-13 15:57:52,044 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 268 transitions. Word has length 30 [2024-11-13 15:57:52,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:52,044 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 268 transitions. [2024-11-13 15:57:52,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2024-11-13 15:57:52,045 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 268 transitions. [2024-11-13 15:57:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 15:57:52,045 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:52,045 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:52,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:57:52,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:52,246 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting DUPFFnewErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:52,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:52,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2093484592, now seen corresponding path program 1 times [2024-11-13 15:57:52,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:52,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978338774] [2024-11-13 15:57:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:52,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:52,249 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:52,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:57:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:52,470 INFO L255 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:57:52,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:52,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:57:52,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:57:52,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:57:52,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 15:57:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 15:57:52,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:52,658 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:52,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978338774] [2024-11-13 15:57:52,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978338774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:52,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:52,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:57:52,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275726610] [2024-11-13 15:57:52,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:52,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:57:52,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:52,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:57:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:57:52,660 INFO L87 Difference]: Start difference. First operand 219 states and 268 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:57:53,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:53,173 INFO L93 Difference]: Finished difference Result 231 states and 276 transitions. [2024-11-13 15:57:53,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:57:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2024-11-13 15:57:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:53,176 INFO L225 Difference]: With dead ends: 231 [2024-11-13 15:57:53,176 INFO L226 Difference]: Without dead ends: 225 [2024-11-13 15:57:53,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:57:53,177 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 31 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:53,177 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 759 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:57:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-13 15:57:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 217. [2024-11-13 15:57:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 134 states have (on average 1.3955223880597014) internal successors, (187), 174 states have internal predecessors, (187), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 257 transitions. [2024-11-13 15:57:53,186 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 257 transitions. Word has length 42 [2024-11-13 15:57:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:53,186 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 257 transitions. [2024-11-13 15:57:53,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 15:57:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 257 transitions. [2024-11-13 15:57:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:57:53,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:53,187 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:53,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:57:53,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:53,388 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:53,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:53,388 INFO L85 PathProgramCache]: Analyzing trace with hash 708118272, now seen corresponding path program 1 times [2024-11-13 15:57:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:53,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [143946054] [2024-11-13 15:57:53,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:53,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:53,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:53,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:57:53,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:53,609 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:57:53,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:53,679 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 15:57:53,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:53,680 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:53,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143946054] [2024-11-13 15:57:53,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143946054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:53,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:53,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:57:53,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320177584] [2024-11-13 15:57:53,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:53,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:57:53,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:53,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:57:53,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:53,681 INFO L87 Difference]: Start difference. First operand 217 states and 257 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:54,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:54,244 INFO L93 Difference]: Finished difference Result 215 states and 255 transitions. [2024-11-13 15:57:54,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:57:54,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2024-11-13 15:57:54,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:54,247 INFO L225 Difference]: With dead ends: 215 [2024-11-13 15:57:54,247 INFO L226 Difference]: Without dead ends: 215 [2024-11-13 15:57:54,247 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:57:54,247 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:54,248 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 739 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:57:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-11-13 15:57:54,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-11-13 15:57:54,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 134 states have (on average 1.3805970149253732) internal successors, (185), 172 states have internal predecessors, (185), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:54,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 255 transitions. [2024-11-13 15:57:54,256 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 255 transitions. Word has length 53 [2024-11-13 15:57:54,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:54,256 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 255 transitions. [2024-11-13 15:57:54,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:54,257 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 255 transitions. [2024-11-13 15:57:54,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 15:57:54,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:54,258 INFO L215 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:54,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:54,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:54,459 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:54,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash 708118273, now seen corresponding path program 1 times [2024-11-13 15:57:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:54,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875108759] [2024-11-13 15:57:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:54,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:54,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:54,461 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:54,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:57:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:54,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:57:54,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 15:57:54,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:57:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 15:57:55,173 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875108759] [2024-11-13 15:57:55,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875108759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:57:55,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:57:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-13 15:57:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951005300] [2024-11-13 15:57:55,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:57:55,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:57:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:57:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:57:55,175 INFO L87 Difference]: Start difference. First operand 215 states and 255 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:57:56,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:56,058 INFO L93 Difference]: Finished difference Result 244 states and 293 transitions. [2024-11-13 15:57:56,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:57:56,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 53 [2024-11-13 15:57:56,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:56,060 INFO L225 Difference]: With dead ends: 244 [2024-11-13 15:57:56,060 INFO L226 Difference]: Without dead ends: 232 [2024-11-13 15:57:56,061 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:57:56,061 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 84 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:56,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1302 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:57:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-13 15:57:56,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 216. [2024-11-13 15:57:56,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 135 states have (on average 1.362962962962963) internal successors, (184), 173 states have internal predecessors, (184), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2024-11-13 15:57:56,071 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 53 [2024-11-13 15:57:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:56,072 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2024-11-13 15:57:56,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 14 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:57:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2024-11-13 15:57:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 15:57:56,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:56,075 INFO L215 NwaCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:56,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:57:56,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:56,279 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:56,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:56,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1640689663, now seen corresponding path program 2 times [2024-11-13 15:57:56,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:56,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652894924] [2024-11-13 15:57:56,279 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:57:56,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:56,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:56,282 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:56,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:57:56,462 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 15:57:56,462 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:57:56,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:57:56,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:57:56,615 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:56,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:56,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652894924] [2024-11-13 15:57:56,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652894924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:56,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:56,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:57:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100784062] [2024-11-13 15:57:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:56,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:57:56,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:56,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:57:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:57:56,617 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:57,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:57,226 INFO L93 Difference]: Finished difference Result 214 states and 252 transitions. [2024-11-13 15:57:57,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:57:57,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-13 15:57:57,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:57,228 INFO L225 Difference]: With dead ends: 214 [2024-11-13 15:57:57,228 INFO L226 Difference]: Without dead ends: 214 [2024-11-13 15:57:57,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:57:57,229 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 9 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:57,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 925 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:57:57,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-13 15:57:57,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-13 15:57:57,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 135 states have (on average 1.348148148148148) internal successors, (182), 171 states have internal predecessors, (182), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:57,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2024-11-13 15:57:57,237 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 252 transitions. Word has length 57 [2024-11-13 15:57:57,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:57,237 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 252 transitions. [2024-11-13 15:57:57,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:57,238 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 252 transitions. [2024-11-13 15:57:57,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 15:57:57,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:57,238 INFO L215 NwaCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:57,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 15:57:57,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:57,439 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:57,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 678228165, now seen corresponding path program 1 times [2024-11-13 15:57:57,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:57,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789411334] [2024-11-13 15:57:57,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:57,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:57,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:57,442 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:57,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:57:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:57,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:57:57,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:57,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:57:57,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:57:57,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:57:57,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 15:57:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:57:57,969 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:57,969 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:57,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789411334] [2024-11-13 15:57:57,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789411334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:57,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:57,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:57:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157174257] [2024-11-13 15:57:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:57,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:57:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:57:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:57:57,970 INFO L87 Difference]: Start difference. First operand 214 states and 252 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:57:58,860 INFO L93 Difference]: Finished difference Result 218 states and 259 transitions. [2024-11-13 15:57:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:57:58,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-13 15:57:58,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:57:58,862 INFO L225 Difference]: With dead ends: 218 [2024-11-13 15:57:58,862 INFO L226 Difference]: Without dead ends: 218 [2024-11-13 15:57:58,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:57:58,862 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 12 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:57:58,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1400 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 15:57:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-13 15:57:58,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 213. [2024-11-13 15:57:58,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 135 states have (on average 1.3407407407407408) internal successors, (181), 170 states have internal predecessors, (181), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:57:58,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 251 transitions. [2024-11-13 15:57:58,870 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 251 transitions. Word has length 58 [2024-11-13 15:57:58,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:57:58,871 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 251 transitions. [2024-11-13 15:57:58,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:57:58,871 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 251 transitions. [2024-11-13 15:57:58,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 15:57:58,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:57:58,872 INFO L215 NwaCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:57:58,896 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:57:59,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:59,073 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:57:59,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:57:59,073 INFO L85 PathProgramCache]: Analyzing trace with hash 678228166, now seen corresponding path program 1 times [2024-11-13 15:57:59,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:57:59,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1359822160] [2024-11-13 15:57:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:57:59,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:57:59,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:57:59,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:57:59,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:57:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:57:59,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-13 15:57:59,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:57:59,362 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 10 treesize of output 9 [2024-11-13 15:57:59,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:57:59,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:57:59,661 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 29 treesize of output 17 [2024-11-13 15:57:59,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:57:59,684 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 29 treesize of output 17 [2024-11-13 15:57:59,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:57:59,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 15:57:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 15:57:59,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:57:59,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:57:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359822160] [2024-11-13 15:57:59,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359822160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:57:59,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:57:59,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:57:59,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799081604] [2024-11-13 15:57:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:57:59,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:57:59,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:57:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:57:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:57:59,867 INFO L87 Difference]: Start difference. First operand 213 states and 251 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:58:01,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:01,175 INFO L93 Difference]: Finished difference Result 217 states and 258 transitions. [2024-11-13 15:58:01,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:58:01,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-13 15:58:01,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:01,177 INFO L225 Difference]: With dead ends: 217 [2024-11-13 15:58:01,177 INFO L226 Difference]: Without dead ends: 217 [2024-11-13 15:58:01,177 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:01,178 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 16 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:01,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1324 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 15:58:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-13 15:58:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 212. [2024-11-13 15:58:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 169 states have internal predecessors, (180), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:58:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2024-11-13 15:58:01,186 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 58 [2024-11-13 15:58:01,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:01,187 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2024-11-13 15:58:01,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 15:58:01,187 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2024-11-13 15:58:01,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-13 15:58:01,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:01,188 INFO L215 NwaCegarLoop]: trace histogram [14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:01,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:01,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:01,388 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:01,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1967262955, now seen corresponding path program 1 times [2024-11-13 15:58:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:01,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [731786052] [2024-11-13 15:58:01,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:01,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:01,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:01,391 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:01,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:58:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:01,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:58:01,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 77 proven. 21 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-13 15:58:02,044 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 71 proven. 21 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 15:58:02,521 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731786052] [2024-11-13 15:58:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731786052] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:02,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:58:02,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2024-11-13 15:58:02,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527057321] [2024-11-13 15:58:02,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:02,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:58:02,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:02,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:58:02,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:58:02,523 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:58:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:04,645 INFO L93 Difference]: Finished difference Result 244 states and 302 transitions. [2024-11-13 15:58:04,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:58:04,647 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 65 [2024-11-13 15:58:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:04,648 INFO L225 Difference]: With dead ends: 244 [2024-11-13 15:58:04,648 INFO L226 Difference]: Without dead ends: 238 [2024-11-13 15:58:04,649 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=546, Invalid=1346, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:58:04,649 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 79 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:04,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2350 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:58:04,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-13 15:58:04,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 225. [2024-11-13 15:58:04,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 148 states have (on average 1.337837837837838) internal successors, (198), 182 states have internal predecessors, (198), 35 states have call successors, (35), 10 states have call predecessors, (35), 10 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 15:58:04,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 268 transitions. [2024-11-13 15:58:04,659 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 268 transitions. Word has length 65 [2024-11-13 15:58:04,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:04,659 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 268 transitions. [2024-11-13 15:58:04,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.35) internal successors, (67), 20 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 15:58:04,659 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 268 transitions. [2024-11-13 15:58:04,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:58:04,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:04,660 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:04,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:58:04,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:04,861 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:04,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:04,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1723264875, now seen corresponding path program 2 times [2024-11-13 15:58:04,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:04,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793189219] [2024-11-13 15:58:04,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:58:04,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:04,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:04,865 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:04,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:58:06,049 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:58:06,049 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:06,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 15:58:06,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:06,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:58:06,175 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 35 treesize of output 17 [2024-11-13 15:58:06,465 INFO L349 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2024-11-13 15:58:06,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 24 [2024-11-13 15:58:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 15:58:06,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:58:06,815 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793189219] [2024-11-13 15:58:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793189219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:06,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:06,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-13 15:58:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481520713] [2024-11-13 15:58:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:06,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:58:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:58:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:58:06,817 INFO L87 Difference]: Start difference. First operand 225 states and 268 transitions. Second operand has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:58:14,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:58:15,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 15:58:17,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:17,205 INFO L93 Difference]: Finished difference Result 276 states and 334 transitions. [2024-11-13 15:58:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:58:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2024-11-13 15:58:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:17,208 INFO L225 Difference]: With dead ends: 276 [2024-11-13 15:58:17,208 INFO L226 Difference]: Without dead ends: 276 [2024-11-13 15:58:17,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:58:17,209 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 688 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 490 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:17,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [688 Valid, 823 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 1249 Invalid, 47 Unknown, 0 Unchecked, 9.8s Time] [2024-11-13 15:58:17,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-13 15:58:17,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 250. [2024-11-13 15:58:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 165 states have (on average 1.3454545454545455) internal successors, (222), 199 states have internal predecessors, (222), 40 states have call successors, (40), 12 states have call predecessors, (40), 13 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2024-11-13 15:58:17,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 305 transitions. [2024-11-13 15:58:17,224 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 305 transitions. Word has length 71 [2024-11-13 15:58:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:17,225 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 305 transitions. [2024-11-13 15:58:17,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 13 states have internal predecessors, (47), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 15:58:17,225 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 305 transitions. [2024-11-13 15:58:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:58:17,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:17,226 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:17,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:17,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:17,427 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:17,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:17,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1723264874, now seen corresponding path program 1 times [2024-11-13 15:58:17,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:17,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91426377] [2024-11-13 15:58:17,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:17,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:17,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:17,430 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:17,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:58:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:17,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:58:17,859 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:17,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:58:17,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:58:17,933 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 [2024-11-13 15:58:17,966 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:58:17,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:58:18,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:58:18,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-13 15:58:19,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:58:19,102 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-13 15:58:19,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 14 [2024-11-13 15:58:19,120 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:58:19,120 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 13 treesize of output 13 [2024-11-13 15:58:19,613 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 1 proven. 131 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2024-11-13 15:58:19,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:23,220 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91426377] [2024-11-13 15:58:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91426377] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1860759504] [2024-11-13 15:58:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:23,220 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:58:23,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:58:23,224 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:58:23,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-13 15:58:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:25,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:58:25,378 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:25,388 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:58:25,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:58:25,435 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 15:58:25,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-13 15:58:25,461 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:58:25,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:58:25,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:58:25,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-13 15:58:26,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:58:26,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 22 [2024-11-13 15:58:26,339 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_arrayElimCell_36 (_ BitVec 32)) (|DUPFFnew_~ans~0#1.base| (_ BitVec 32)) (v_DerPreprocessor_3 (_ BitVec 1))) (and (= (store (store |c_old(#length)| |DUPFFnew_~ans~0#1.base| (select |c_#length| |DUPFFnew_~ans~0#1.base|)) v_arrayElimCell_36 (select |c_#length| v_arrayElimCell_36)) |c_#length|) (= (_ bv0 1) (select (store |c_old(#valid)| |DUPFFnew_~ans~0#1.base| v_DerPreprocessor_3) v_arrayElimCell_36)) (= (_ bv0 1) (select |c_old(#valid)| |DUPFFnew_~ans~0#1.base|)))) is different from true [2024-11-13 15:58:26,840 INFO L349 Elim1Store]: treesize reduction 17, result has 45.2 percent of original size [2024-11-13 15:58:26,840 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 31 treesize of output 38 [2024-11-13 15:58:26,874 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 15:58:26,875 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 1 case distinctions, treesize of input 19 treesize of output 9 [2024-11-13 15:58:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 114 trivial. 126 not checked. [2024-11-13 15:58:27,459 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:38,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1860759504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:38,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:58:38,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 27 [2024-11-13 15:58:38,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012338029] [2024-11-13 15:58:38,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:38,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:58:38,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:38,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:58:38,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=1025, Unknown=3, NotChecked=64, Total=1190 [2024-11-13 15:58:38,087 INFO L87 Difference]: Start difference. First operand 250 states and 305 transitions. Second operand has 28 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:47,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:47,453 INFO L93 Difference]: Finished difference Result 278 states and 339 transitions. [2024-11-13 15:58:47,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:58:47,455 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 71 [2024-11-13 15:58:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:47,457 INFO L225 Difference]: With dead ends: 278 [2024-11-13 15:58:47,457 INFO L226 Difference]: Without dead ends: 278 [2024-11-13 15:58:47,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 5 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=170, Invalid=1723, Unknown=3, NotChecked=84, Total=1980 [2024-11-13 15:58:47,459 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 146 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1990 mSolverCounterSat, 80 mSolverCounterUnsat, 66 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 2389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1990 IncrementalHoareTripleChecker+Invalid, 66 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:47,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1084 Invalid, 2389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1990 Invalid, 66 Unknown, 253 Unchecked, 7.1s Time] [2024-11-13 15:58:47,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-13 15:58:47,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 256. [2024-11-13 15:58:47,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 169 states have (on average 1.331360946745562) internal successors, (225), 204 states have internal predecessors, (225), 41 states have call successors, (41), 13 states have call predecessors, (41), 14 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2024-11-13 15:58:47,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 310 transitions. [2024-11-13 15:58:47,470 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 310 transitions. Word has length 71 [2024-11-13 15:58:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:47,470 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 310 transitions. [2024-11-13 15:58:47,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 3.4) internal successors, (85), 22 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 310 transitions. [2024-11-13 15:58:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 15:58:47,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:47,471 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:47,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 15:58:47,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-13 15:58:47,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:58:47,872 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:47,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1092406344, now seen corresponding path program 1 times [2024-11-13 15:58:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509236820] [2024-11-13 15:58:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:47,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:47,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:47,875 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:47,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:58:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:48,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:58:48,307 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:48,642 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-13 15:58:48,642 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:58:48,642 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:48,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509236820] [2024-11-13 15:58:48,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509236820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:48,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:48,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 15:58:48,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897309436] [2024-11-13 15:58:48,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:48,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:58:48,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:48,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:58:48,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:58:48,644 INFO L87 Difference]: Start difference. First operand 256 states and 310 transitions. Second operand has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:51,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:51,337 INFO L93 Difference]: Finished difference Result 277 states and 334 transitions. [2024-11-13 15:58:51,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:58:51,340 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2024-11-13 15:58:51,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:51,342 INFO L225 Difference]: With dead ends: 277 [2024-11-13 15:58:51,342 INFO L226 Difference]: Without dead ends: 277 [2024-11-13 15:58:51,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:58:51,346 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 214 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:51,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 744 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 15:58:51,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2024-11-13 15:58:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 264. [2024-11-13 15:58:51,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 175 states have (on average 1.3314285714285714) internal successors, (233), 210 states have internal predecessors, (233), 42 states have call successors, (42), 14 states have call predecessors, (42), 15 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-11-13 15:58:51,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 320 transitions. [2024-11-13 15:58:51,360 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 320 transitions. Word has length 77 [2024-11-13 15:58:51,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:51,361 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 320 transitions. [2024-11-13 15:58:51,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:51,361 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 320 transitions. [2024-11-13 15:58:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 15:58:51,362 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:51,362 INFO L215 NwaCegarLoop]: trace histogram [20, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:51,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:58:51,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:51,563 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:51,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:51,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1092406343, now seen corresponding path program 1 times [2024-11-13 15:58:51,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:51,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1343722464] [2024-11-13 15:58:51,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:51,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:51,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:51,566 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:51,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:58:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:52,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:58:52,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-13 15:58:52,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:58:52,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:52,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343722464] [2024-11-13 15:58:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343722464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:52,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 15:58:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350239480] [2024-11-13 15:58:52,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:52,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:58:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:58:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:58:52,563 INFO L87 Difference]: Start difference. First operand 264 states and 320 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:55,723 INFO L93 Difference]: Finished difference Result 278 states and 334 transitions. [2024-11-13 15:58:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:58:55,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2024-11-13 15:58:55,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:55,726 INFO L225 Difference]: With dead ends: 278 [2024-11-13 15:58:55,726 INFO L226 Difference]: Without dead ends: 278 [2024-11-13 15:58:55,726 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:55,727 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 216 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:55,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 911 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 15:58:55,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-13 15:58:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 264. [2024-11-13 15:58:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 175 states have (on average 1.3257142857142856) internal successors, (232), 210 states have internal predecessors, (232), 42 states have call successors, (42), 14 states have call predecessors, (42), 15 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2024-11-13 15:58:55,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 319 transitions. [2024-11-13 15:58:55,738 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 319 transitions. Word has length 77 [2024-11-13 15:58:55,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:55,738 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 319 transitions. [2024-11-13 15:58:55,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 15:58:55,739 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 319 transitions. [2024-11-13 15:58:55,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 15:58:55,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:55,740 INFO L215 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:55,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:58:55,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:55,941 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:58:55,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:55,941 INFO L85 PathProgramCache]: Analyzing trace with hash -211212062, now seen corresponding path program 1 times [2024-11-13 15:58:55,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:55,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379463438] [2024-11-13 15:58:55,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:55,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:55,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:55,944 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:55,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:58:56,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:56,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:58:56,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-13 15:58:56,836 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:56,997 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2024-11-13 15:58:56,998 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:58:56,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379463438] [2024-11-13 15:58:56,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379463438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:56,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:58:56,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-13 15:58:56,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349099205] [2024-11-13 15:58:56,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:56,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:58:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:58:56,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:58:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:58:56,999 INFO L87 Difference]: Start difference. First operand 264 states and 319 transitions. Second operand has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:59:00,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:00,922 INFO L93 Difference]: Finished difference Result 319 states and 390 transitions. [2024-11-13 15:59:00,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:59:00,923 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2024-11-13 15:59:00,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:00,925 INFO L225 Difference]: With dead ends: 319 [2024-11-13 15:59:00,925 INFO L226 Difference]: Without dead ends: 319 [2024-11-13 15:59:00,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:59:00,926 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 293 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:00,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1032 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-13 15:59:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-13 15:59:00,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 302. [2024-11-13 15:59:00,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 200 states have (on average 1.325) internal successors, (265), 238 states have internal predecessors, (265), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (59), 49 states have call predecessors, (59), 49 states have call successors, (59) [2024-11-13 15:59:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 373 transitions. [2024-11-13 15:59:00,939 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 373 transitions. Word has length 86 [2024-11-13 15:59:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:00,940 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 373 transitions. [2024-11-13 15:59:00,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.909090909090909) internal successors, (54), 9 states have internal predecessors, (54), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 15:59:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 373 transitions. [2024-11-13 15:59:00,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 15:59:00,941 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:00,941 INFO L215 NwaCegarLoop]: trace histogram [20, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:00,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:59:01,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:01,142 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:59:01,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash -211212061, now seen corresponding path program 1 times [2024-11-13 15:59:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:01,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318573396] [2024-11-13 15:59:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:01,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:01,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:01,145 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:01,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:59:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:01,678 INFO L255 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-13 15:59:01,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 138 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 15:59:02,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:03,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-13 15:59:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 138 proven. 3 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2024-11-13 15:59:03,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:59:03,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318573396] [2024-11-13 15:59:03,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318573396] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:03,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:59:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 15:59:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251686210] [2024-11-13 15:59:03,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:03,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 15:59:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:59:03,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 15:59:03,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:59:03,893 INFO L87 Difference]: Start difference. First operand 302 states and 373 transitions. Second operand has 27 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 15:59:11,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:11,093 INFO L93 Difference]: Finished difference Result 425 states and 519 transitions. [2024-11-13 15:59:11,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:59:11,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) Word has length 86 [2024-11-13 15:59:11,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:11,097 INFO L225 Difference]: With dead ends: 425 [2024-11-13 15:59:11,097 INFO L226 Difference]: Without dead ends: 425 [2024-11-13 15:59:11,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=202, Invalid=1438, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 15:59:11,099 INFO L432 NwaCegarLoop]: 231 mSDtfsCounter, 488 mSDsluCounter, 2293 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 1645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:11,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2524 Invalid, 1645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 15:59:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2024-11-13 15:59:11,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 371. [2024-11-13 15:59:11,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 243 states have (on average 1.382716049382716) internal successors, (336), 280 states have internal predecessors, (336), 74 states have call successors, (74), 21 states have call predecessors, (74), 22 states have return successors, (78), 75 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-13 15:59:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 488 transitions. [2024-11-13 15:59:11,122 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 488 transitions. Word has length 86 [2024-11-13 15:59:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:11,122 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 488 transitions. [2024-11-13 15:59:11,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 19 states have internal predecessors, (85), 9 states have call successors, (12), 7 states have call predecessors, (12), 4 states have return successors, (7), 7 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 15:59:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 488 transitions. [2024-11-13 15:59:11,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:59:11,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:11,124 INFO L215 NwaCegarLoop]: trace histogram [20, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:11,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:11,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:11,324 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:59:11,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:11,325 INFO L85 PathProgramCache]: Analyzing trace with hash 2144411205, now seen corresponding path program 2 times [2024-11-13 15:59:11,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:11,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [887333792] [2024-11-13 15:59:11,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:11,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:11,327 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:11,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:59:12,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:12,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:12,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:59:12,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2024-11-13 15:59:12,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:12,747 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 15:59:12,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 15:59:12,765 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-13 15:59:12,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:59:12,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887333792] [2024-11-13 15:59:12,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887333792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:12,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:59:12,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 8 [2024-11-13 15:59:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928095095] [2024-11-13 15:59:12,766 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:12,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:59:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:59:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:59:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:59:12,768 INFO L87 Difference]: Start difference. First operand 371 states and 488 transitions. Second operand has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 15:59:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:14,694 INFO L93 Difference]: Finished difference Result 403 states and 524 transitions. [2024-11-13 15:59:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:59:14,695 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 92 [2024-11-13 15:59:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:14,696 INFO L225 Difference]: With dead ends: 403 [2024-11-13 15:59:14,696 INFO L226 Difference]: Without dead ends: 403 [2024-11-13 15:59:14,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 173 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:59:14,697 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 241 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:14,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 692 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 15:59:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-13 15:59:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 374. [2024-11-13 15:59:14,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 247 states have (on average 1.3765182186234817) internal successors, (340), 281 states have internal predecessors, (340), 74 states have call successors, (74), 23 states have call predecessors, (74), 22 states have return successors, (78), 75 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-13 15:59:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 492 transitions. [2024-11-13 15:59:14,710 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 492 transitions. Word has length 92 [2024-11-13 15:59:14,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:14,710 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 492 transitions. [2024-11-13 15:59:14,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-13 15:59:14,711 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 492 transitions. [2024-11-13 15:59:14,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:59:14,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:14,712 INFO L215 NwaCegarLoop]: trace histogram [20, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:14,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:59:14,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:14,912 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:59:14,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2144411206, now seen corresponding path program 2 times [2024-11-13 15:59:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474821692] [2024-11-13 15:59:14,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:14,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:14,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:14,915 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:14,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:59:16,079 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:16,080 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:16,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:59:16,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 7 proven. 143 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-11-13 15:59:16,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:17,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2024-11-13 15:59:17,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:59:17,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2024-11-13 15:59:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 5 proven. 143 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-13 15:59:18,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:59:18,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474821692] [2024-11-13 15:59:18,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474821692] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:18,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:59:18,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2024-11-13 15:59:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794917244] [2024-11-13 15:59:18,051 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:18,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:59:18,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:59:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:59:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:59:18,052 INFO L87 Difference]: Start difference. First operand 374 states and 492 transitions. Second operand has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 15:59:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:28,637 INFO L93 Difference]: Finished difference Result 435 states and 526 transitions. [2024-11-13 15:59:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:59:28,638 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 92 [2024-11-13 15:59:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:28,640 INFO L225 Difference]: With dead ends: 435 [2024-11-13 15:59:28,640 INFO L226 Difference]: Without dead ends: 435 [2024-11-13 15:59:28,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 154 SyntacticMatches, 3 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=294, Invalid=2358, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 15:59:28,641 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 677 mSDsluCounter, 2393 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 2752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:28,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 2572 Invalid, 2752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2024-11-13 15:59:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2024-11-13 15:59:28,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 380. [2024-11-13 15:59:28,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 251 states have (on average 1.3625498007968126) internal successors, (342), 287 states have internal predecessors, (342), 74 states have call successors, (74), 23 states have call predecessors, (74), 24 states have return successors, (78), 75 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-13 15:59:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 494 transitions. [2024-11-13 15:59:28,653 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 494 transitions. Word has length 92 [2024-11-13 15:59:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:28,654 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 494 transitions. [2024-11-13 15:59:28,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 4.0) internal successors, (96), 21 states have internal predecessors, (96), 9 states have call successors, (15), 8 states have call predecessors, (15), 6 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 15:59:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 494 transitions. [2024-11-13 15:59:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:59:28,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:28,655 INFO L215 NwaCegarLoop]: trace histogram [20, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:28,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:59:28,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:28,856 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:59:28,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:28,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1984188590, now seen corresponding path program 1 times [2024-11-13 15:59:28,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:28,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1169831521] [2024-11-13 15:59:28,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:28,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:28,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:28,859 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:28,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:59:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:29,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:59:29,277 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2024-11-13 15:59:29,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:59:29,287 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:59:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169831521] [2024-11-13 15:59:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169831521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:59:29,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:59:29,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:59:29,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514536948] [2024-11-13 15:59:29,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:59:29,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:59:29,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:59:29,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:59:29,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:29,289 INFO L87 Difference]: Start difference. First operand 380 states and 494 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 15:59:29,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:29,300 INFO L93 Difference]: Finished difference Result 383 states and 494 transitions. [2024-11-13 15:59:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:59:29,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 92 [2024-11-13 15:59:29,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:29,302 INFO L225 Difference]: With dead ends: 383 [2024-11-13 15:59:29,302 INFO L226 Difference]: Without dead ends: 380 [2024-11-13 15:59:29,302 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:59:29,302 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:29,303 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 389 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:59:29,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-13 15:59:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-13 15:59:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 251 states have (on average 1.350597609561753) internal successors, (339), 287 states have internal predecessors, (339), 74 states have call successors, (74), 23 states have call predecessors, (74), 24 states have return successors, (78), 75 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-13 15:59:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 491 transitions. [2024-11-13 15:59:29,313 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 491 transitions. Word has length 92 [2024-11-13 15:59:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:29,314 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 491 transitions. [2024-11-13 15:59:29,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 15:59:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 491 transitions. [2024-11-13 15:59:29,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-13 15:59:29,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:29,315 INFO L215 NwaCegarLoop]: trace histogram [20, 5, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:29,339 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:59:29,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:29,517 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 15:59:29,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:29,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1695167243, now seen corresponding path program 3 times [2024-11-13 15:59:29,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:59:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1320756254] [2024-11-13 15:59:29,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:59:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:29,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:29,522 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:29,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:00:13,611 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 16:00:13,611 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:13,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 16:00:13,632 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-13 16:00:13,742 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:13,801 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 16:00:13,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 16:00:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2024-11-13 16:00:13,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:13,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320756254] [2024-11-13 16:00:13,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320756254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:13,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:00:13,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2024-11-13 16:00:13,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63092383] [2024-11-13 16:00:13,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:13,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:00:13,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:00:13,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:00:13,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:00:13,837 INFO L87 Difference]: Start difference. First operand 380 states and 491 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:00:14,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:14,915 INFO L93 Difference]: Finished difference Result 404 states and 518 transitions. [2024-11-13 16:00:14,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:00:14,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 101 [2024-11-13 16:00:14,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:14,917 INFO L225 Difference]: With dead ends: 404 [2024-11-13 16:00:14,917 INFO L226 Difference]: Without dead ends: 404 [2024-11-13 16:00:14,917 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-13 16:00:14,918 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 65 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:14,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 987 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 16:00:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-13 16:00:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 380. [2024-11-13 16:00:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 251 states have (on average 1.346613545816733) internal successors, (338), 287 states have internal predecessors, (338), 74 states have call successors, (74), 23 states have call predecessors, (74), 24 states have return successors, (78), 75 states have call predecessors, (78), 74 states have call successors, (78) [2024-11-13 16:00:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 490 transitions. [2024-11-13 16:00:14,933 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 490 transitions. Word has length 101 [2024-11-13 16:00:14,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:14,934 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 490 transitions. [2024-11-13 16:00:14,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-13 16:00:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 490 transitions. [2024-11-13 16:00:14,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 16:00:14,935 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:14,935 INFO L215 NwaCegarLoop]: trace histogram [20, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:14,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 16:00:15,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:15,136 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 16:00:15,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:15,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1931839400, now seen corresponding path program 1 times [2024-11-13 16:00:15,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:00:15,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1920902805] [2024-11-13 16:00:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:15,138 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 16:00:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:15,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 16:00:15,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:15,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:00:16,149 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-13 16:00:16,150 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:00:16,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:16,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920902805] [2024-11-13 16:00:16,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920902805] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:00:16,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:00:16,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-13 16:00:16,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825251090] [2024-11-13 16:00:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:00:16,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 16:00:16,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:00:16,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 16:00:16,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2024-11-13 16:00:16,151 INFO L87 Difference]: Start difference. First operand 380 states and 490 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 16:00:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:17,533 INFO L93 Difference]: Finished difference Result 395 states and 504 transitions. [2024-11-13 16:00:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 16:00:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 99 [2024-11-13 16:00:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:17,536 INFO L225 Difference]: With dead ends: 395 [2024-11-13 16:00:17,536 INFO L226 Difference]: Without dead ends: 379 [2024-11-13 16:00:17,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:00:17,536 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 72 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:17,536 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2020 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 16:00:17,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-13 16:00:17,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 355. [2024-11-13 16:00:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 232 states have (on average 1.353448275862069) internal successors, (314), 268 states have internal predecessors, (314), 70 states have call successors, (70), 20 states have call predecessors, (70), 22 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 16:00:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 458 transitions. [2024-11-13 16:00:17,546 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 458 transitions. Word has length 99 [2024-11-13 16:00:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:17,547 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 458 transitions. [2024-11-13 16:00:17,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 12 states have internal predecessors, (60), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 16:00:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 458 transitions. [2024-11-13 16:00:17,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-13 16:00:17,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:17,548 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:17,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 16:00:17,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:17,749 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting DUPFFexgcdErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 16:00:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1008648410, now seen corresponding path program 1 times [2024-11-13 16:00:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:00:17,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1191121453] [2024-11-13 16:00:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:17,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:17,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:17,752 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:17,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:00:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:18,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 707 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 16:00:18,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 135 proven. 20 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-13 16:00:19,136 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:21,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2024-11-13 16:00:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 135 proven. 20 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2024-11-13 16:00:21,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:21,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191121453] [2024-11-13 16:00:21,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191121453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:21,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:00:21,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2024-11-13 16:00:21,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724324751] [2024-11-13 16:00:21,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:21,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:00:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:00:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:00:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:00:21,136 INFO L87 Difference]: Start difference. First operand 355 states and 458 transitions. Second operand has 26 states, 24 states have (on average 4.125) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:00:29,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:29,837 INFO L93 Difference]: Finished difference Result 370 states and 472 transitions. [2024-11-13 16:00:29,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:00:29,838 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 4.125) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) Word has length 113 [2024-11-13 16:00:29,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:29,839 INFO L225 Difference]: With dead ends: 370 [2024-11-13 16:00:29,839 INFO L226 Difference]: Without dead ends: 370 [2024-11-13 16:00:29,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 189 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:00:29,840 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 316 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 2448 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:29,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1726 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2448 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 16:00:29,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-13 16:00:29,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 355. [2024-11-13 16:00:29,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 232 states have (on average 1.3491379310344827) internal successors, (313), 268 states have internal predecessors, (313), 70 states have call successors, (70), 20 states have call predecessors, (70), 22 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 16:00:29,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 457 transitions. [2024-11-13 16:00:29,851 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 457 transitions. Word has length 113 [2024-11-13 16:00:29,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:29,851 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 457 transitions. [2024-11-13 16:00:29,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 4.125) internal successors, (99), 20 states have internal predecessors, (99), 8 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:00:29,852 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 457 transitions. [2024-11-13 16:00:29,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 16:00:29,852 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:29,853 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:29,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:00:30,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:30,054 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting DUPFFexgcdErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 16:00:30,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:30,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1203329653, now seen corresponding path program 1 times [2024-11-13 16:00:30,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:00:30,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163008332] [2024-11-13 16:00:30,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:30,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:30,058 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 16:00:30,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:30,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 16:00:30,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:30,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 16:00:31,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-13 16:00:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:00:31,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:31,626 INFO L349 Elim1Store]: treesize reduction 7, result has 56.3 percent of original size [2024-11-13 16:00:31,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 21 [2024-11-13 16:00:31,708 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2024-11-13 16:00:31,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:31,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163008332] [2024-11-13 16:00:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163008332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:31,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:00:31,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2024-11-13 16:00:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890849927] [2024-11-13 16:00:31,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:31,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 16:00:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:00:31,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 16:00:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-13 16:00:31,710 INFO L87 Difference]: Start difference. First operand 355 states and 457 transitions. Second operand has 20 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 7 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:00:36,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:00:38,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:00:45,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 16:00:45,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:45,832 INFO L93 Difference]: Finished difference Result 372 states and 474 transitions. [2024-11-13 16:00:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 16:00:45,833 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 7 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 114 [2024-11-13 16:00:45,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:45,834 INFO L225 Difference]: With dead ends: 372 [2024-11-13 16:00:45,834 INFO L226 Difference]: Without dead ends: 372 [2024-11-13 16:00:45,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 197 SyntacticMatches, 11 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2024-11-13 16:00:45,835 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 166 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 65 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 1192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:45,836 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2466 Invalid, 1192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1125 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2024-11-13 16:00:45,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-13 16:00:45,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 355. [2024-11-13 16:00:45,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 232 states have (on average 1.3448275862068966) internal successors, (312), 268 states have internal predecessors, (312), 70 states have call successors, (70), 20 states have call predecessors, (70), 22 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 16:00:45,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 456 transitions. [2024-11-13 16:00:45,851 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 456 transitions. Word has length 114 [2024-11-13 16:00:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:45,852 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 456 transitions. [2024-11-13 16:00:45,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.0) internal successors, (76), 15 states have internal predecessors, (76), 7 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:00:45,852 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 456 transitions. [2024-11-13 16:00:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 16:00:45,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:45,853 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:45,886 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 16:00:46,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:46,054 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting DUPFFexgcdErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 16:00:46,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1203329654, now seen corresponding path program 1 times [2024-11-13 16:00:46,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:00:46,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287128046] [2024-11-13 16:00:46,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:46,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:46,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:46,057 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:46,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:00:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:46,653 INFO L255 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 16:00:46,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:46,698 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 10 treesize of output 9 [2024-11-13 16:00:46,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 16:00:46,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 16:00:47,097 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 29 treesize of output 17 [2024-11-13 16:00:47,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:00:47,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:00:47,130 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 29 treesize of output 17 [2024-11-13 16:00:47,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:00:47,333 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 25 treesize of output 13 [2024-11-13 16:00:48,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-13 16:00:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:00:48,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 131 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2024-11-13 16:00:54,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:00:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287128046] [2024-11-13 16:00:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287128046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:54,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:00:54,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 25 [2024-11-13 16:00:54,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425175772] [2024-11-13 16:00:54,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:54,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:00:54,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:00:54,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:00:54,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=582, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:00:54,412 INFO L87 Difference]: Start difference. First operand 355 states and 456 transitions. Second operand has 26 states, 25 states have (on average 3.72) internal successors, (93), 20 states have internal predecessors, (93), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:01:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:05,372 INFO L93 Difference]: Finished difference Result 378 states and 486 transitions. [2024-11-13 16:01:05,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 16:01:05,374 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 20 states have internal predecessors, (93), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 114 [2024-11-13 16:01:05,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:05,376 INFO L225 Difference]: With dead ends: 378 [2024-11-13 16:01:05,376 INFO L226 Difference]: Without dead ends: 378 [2024-11-13 16:01:05,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 192 SyntacticMatches, 11 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:01:05,378 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 149 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 1948 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 2586 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:05,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 2586 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1948 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-13 16:01:05,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-13 16:01:05,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 355. [2024-11-13 16:01:05,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 232 states have (on average 1.3405172413793103) internal successors, (311), 268 states have internal predecessors, (311), 70 states have call successors, (70), 20 states have call predecessors, (70), 22 states have return successors, (74), 72 states have call predecessors, (74), 70 states have call successors, (74) [2024-11-13 16:01:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 455 transitions. [2024-11-13 16:01:05,391 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 455 transitions. Word has length 114 [2024-11-13 16:01:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:05,392 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 455 transitions. [2024-11-13 16:01:05,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 20 states have internal predecessors, (93), 7 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 16:01:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 455 transitions. [2024-11-13 16:01:05,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-13 16:01:05,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:05,394 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:05,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 16:01:05,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:05,594 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [DUPFFdegErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFdegErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, DUPFFnewErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2024-11-13 16:01:05,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:05,595 INFO L85 PathProgramCache]: Analyzing trace with hash 26224700, now seen corresponding path program 1 times [2024-11-13 16:01:05,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:01:05,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183161826] [2024-11-13 16:01:05,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:05,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:05,598 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:05,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_26778556-329d-4f6f-a7cd-b480dcd8dc82/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process