./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU --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 ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:03:16,793 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:03:16,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:03:16,888 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:03:16,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:03:16,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:03:16,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:03:16,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:03:16,918 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:03:16,922 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:03:16,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:03:16,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:03:16,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:03:16,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:03:16,924 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:03:16,925 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:03:16,925 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:03:16,925 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:03:16,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:03:16,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:03:16,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:03:16,928 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:03:16,928 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:03:16,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:03:16,929 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:03:16,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:03:16,930 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:03:16,930 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:03:16,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:03:16,931 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:03:16,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:03:16,950 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:03:16,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:03:16,951 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:16,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:03:16,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:03:16,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:03:16,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:03:16,952 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:03:16,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:03:16,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:03:16,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:03:16,955 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2024-10-31 22:03:17,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:03:17,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:03:17,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:03:17,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:03:17,292 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:03:17,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i Unable to find full path for "g++" [2024-10-31 22:03:19,567 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:03:19,935 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:03:19,939 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test4-1.i [2024-10-31 22:03:19,987 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/data/7c004aafb/629d840c538e4292888419ed8a30d417/FLAG2683ca2a7 [2024-10-31 22:03:20,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/data/7c004aafb/629d840c538e4292888419ed8a30d417 [2024-10-31 22:03:20,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:03:20,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:03:20,015 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:20,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:03:20,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:03:20,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:20,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8b37c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:20, skipping insertion in model container [2024-10-31 22:03:20,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:03:20" (1/1) ... [2024-10-31 22:03:20,088 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:03:20,583 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,629 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,641 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,648 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,664 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,725 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,729 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,732 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,740 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,769 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-10-31 22:03:20,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:20,817 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:03:21,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:03:21,087 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:03:21,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21 WrapperNode [2024-10-31 22:03:21,088 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:03:21,089 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:21,089 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:03:21,090 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:03:21,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,136 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,236 INFO L138 Inliner]: procedures = 176, calls = 326, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1563 [2024-10-31 22:03:21,236 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:03:21,237 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,237 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:03:21,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:03:21,272 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,272 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,550 INFO L175 MemorySlicer]: Split 309 memory accesses to 2 slices as follows [2, 307]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 82 writes are split as follows [0, 82]. [2024-10-31 22:03:21,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,555 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,616 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,637 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:03:21,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:03:21,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:03:21,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:03:21,671 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (1/1) ... [2024-10-31 22:03:21,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:03:21,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:03:21,713 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:03:21,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a00e25a1-051e-45c5-8da3-0f44341827b4/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:03:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:03:21,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:03:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:03:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:03:21,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-10-31 22:03:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-10-31 22:03:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-10-31 22:03:21,766 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-10-31 22:03:21,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:03:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:03:21,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:03:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:03:21,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:03:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:03:21,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:03:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:03:21,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:03:21,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:03:21,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:03:22,060 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:03:22,063 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:03:22,069 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-31 22:03:22,135 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-10-31 22:03:25,721 INFO L? ?]: Removed 1493 outVars from TransFormulas that were not future-live. [2024-10-31 22:03:25,721 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:03:25,771 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:03:25,771 INFO L316 CfgBuilder]: Removed 60 assume(true) statements. [2024-10-31 22:03:25,771 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:25 BoogieIcfgContainer [2024-10-31 22:03:25,772 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:03:25,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:03:25,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:03:25,778 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:03:25,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:03:20" (1/3) ... [2024-10-31 22:03:25,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dee2ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:25, skipping insertion in model container [2024-10-31 22:03:25,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:03:21" (2/3) ... [2024-10-31 22:03:25,779 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dee2ccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:03:25, skipping insertion in model container [2024-10-31 22:03:25,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:03:25" (3/3) ... [2024-10-31 22:03:25,784 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test4-1.i [2024-10-31 22:03:25,812 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:03:25,813 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 628 error locations. [2024-10-31 22:03:25,933 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:03:25,941 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;@4796ae47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:03:25,941 INFO L334 AbstractCegarLoop]: Starting to check reachability of 628 error locations. [2024-10-31 22:03:25,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 1432 states, 802 states have (on average 2.0773067331670823) internal successors, (1666), 1424 states have internal predecessors, (1666), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:03:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-31 22:03:25,962 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:25,963 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-31 22:03:25,964 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr627ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:25,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:25,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1482245, now seen corresponding path program 1 times [2024-10-31 22:03:25,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:25,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173146767] [2024-10-31 22:03:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:25,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:26,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:26,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173146767] [2024-10-31 22:03:26,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173146767] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:26,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:26,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880643653] [2024-10-31 22:03:26,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:26,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:26,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:26,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:26,280 INFO L87 Difference]: Start difference. First operand has 1432 states, 802 states have (on average 2.0773067331670823) internal successors, (1666), 1424 states have internal predecessors, (1666), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:27,625 INFO L93 Difference]: Finished difference Result 1437 states and 1617 transitions. [2024-10-31 22:03:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:27,628 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-31 22:03:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:27,668 INFO L225 Difference]: With dead ends: 1437 [2024-10-31 22:03:27,669 INFO L226 Difference]: Without dead ends: 1433 [2024-10-31 22:03:27,671 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 [2024-10-31 22:03:27,677 INFO L432 NwaCegarLoop]: 1582 mSDtfsCounter, 26 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:27,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2550 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:03:27,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-10-31 22:03:27,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1424. [2024-10-31 22:03:27,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 805 states have (on average 1.9838509316770185) internal successors, (1597), 1416 states have internal predecessors, (1597), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:03:27,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1609 transitions. [2024-10-31 22:03:27,826 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1609 transitions. Word has length 4 [2024-10-31 22:03:27,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:27,827 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 1609 transitions. [2024-10-31 22:03:27,827 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:27,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1609 transitions. [2024-10-31 22:03:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:03:27,828 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:27,828 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:03:27,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:03:27,829 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:27,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1422076526, now seen corresponding path program 1 times [2024-10-31 22:03:27,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:27,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293436966] [2024-10-31 22:03:27,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:27,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:28,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:28,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293436966] [2024-10-31 22:03:28,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293436966] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:28,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:28,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:28,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762502315] [2024-10-31 22:03:28,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:28,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:28,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:28,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:28,014 INFO L87 Difference]: Start difference. First operand 1424 states and 1609 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:29,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:29,621 INFO L93 Difference]: Finished difference Result 1330 states and 1513 transitions. [2024-10-31 22:03:29,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:29,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 22:03:29,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:29,627 INFO L225 Difference]: With dead ends: 1330 [2024-10-31 22:03:29,627 INFO L226 Difference]: Without dead ends: 1330 [2024-10-31 22:03:29,627 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 [2024-10-31 22:03:29,628 INFO L432 NwaCegarLoop]: 882 mSDtfsCounter, 1353 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 889 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:29,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 889 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:03:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-10-31 22:03:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2024-10-31 22:03:29,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 805 states have (on average 1.8645962732919255) internal successors, (1501), 1322 states have internal predecessors, (1501), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:03:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1513 transitions. [2024-10-31 22:03:29,667 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1513 transitions. Word has length 6 [2024-10-31 22:03:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:29,667 INFO L471 AbstractCegarLoop]: Abstraction has 1330 states and 1513 transitions. [2024-10-31 22:03:29,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1513 transitions. [2024-10-31 22:03:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:03:29,668 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:29,668 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:03:29,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:03:29,669 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:29,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1422076527, now seen corresponding path program 1 times [2024-10-31 22:03:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:29,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795308432] [2024-10-31 22:03:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:29,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:30,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:30,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795308432] [2024-10-31 22:03:30,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795308432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:30,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:30,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:03:30,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059797628] [2024-10-31 22:03:30,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:30,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:30,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:30,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:30,012 INFO L87 Difference]: Start difference. First operand 1330 states and 1513 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:31,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:31,505 INFO L93 Difference]: Finished difference Result 1746 states and 2007 transitions. [2024-10-31 22:03:31,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:31,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 22:03:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:31,513 INFO L225 Difference]: With dead ends: 1746 [2024-10-31 22:03:31,513 INFO L226 Difference]: Without dead ends: 1746 [2024-10-31 22:03:31,513 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 [2024-10-31 22:03:31,515 INFO L432 NwaCegarLoop]: 1248 mSDtfsCounter, 820 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1871 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:31,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1871 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-10-31 22:03:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1746 states. [2024-10-31 22:03:31,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1746 to 1593. [2024-10-31 22:03:31,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1078 states have (on average 1.8320964749536177) internal successors, (1975), 1585 states have internal predecessors, (1975), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-31 22:03:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 1987 transitions. [2024-10-31 22:03:31,566 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 1987 transitions. Word has length 6 [2024-10-31 22:03:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:31,568 INFO L471 AbstractCegarLoop]: Abstraction has 1593 states and 1987 transitions. [2024-10-31 22:03:31,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 1987 transitions. [2024-10-31 22:03:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:03:31,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:31,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:31,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:03:31,569 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:31,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1137087712, now seen corresponding path program 1 times [2024-10-31 22:03:31,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:31,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685582577] [2024-10-31 22:03:31,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:31,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685582577] [2024-10-31 22:03:31,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685582577] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:31,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:31,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22314584] [2024-10-31 22:03:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:31,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:31,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:31,711 INFO L87 Difference]: Start difference. First operand 1593 states and 1987 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:32,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:32,242 INFO L93 Difference]: Finished difference Result 2646 states and 3337 transitions. [2024-10-31 22:03:32,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:32,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:03:32,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:32,254 INFO L225 Difference]: With dead ends: 2646 [2024-10-31 22:03:32,254 INFO L226 Difference]: Without dead ends: 2644 [2024-10-31 22:03:32,255 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:32,260 INFO L432 NwaCegarLoop]: 1481 mSDtfsCounter, 997 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:32,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1000 Valid, 4208 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-31 22:03:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2024-10-31 22:03:32,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2345. [2024-10-31 22:03:32,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1830 states have (on average 1.812568306010929) internal successors, (3317), 2334 states have internal predecessors, (3317), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 3335 transitions. [2024-10-31 22:03:32,333 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 3335 transitions. Word has length 7 [2024-10-31 22:03:32,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:32,334 INFO L471 AbstractCegarLoop]: Abstraction has 2345 states and 3335 transitions. [2024-10-31 22:03:32,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:32,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 3335 transitions. [2024-10-31 22:03:32,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:03:32,335 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:32,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:32,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:03:32,336 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:32,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:32,337 INFO L85 PathProgramCache]: Analyzing trace with hash 242137368, now seen corresponding path program 1 times [2024-10-31 22:03:32,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:32,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819567480] [2024-10-31 22:03:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:32,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:32,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:32,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819567480] [2024-10-31 22:03:32,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819567480] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:32,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:32,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:32,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961968591] [2024-10-31 22:03:32,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:32,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:32,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:32,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:32,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:32,470 INFO L87 Difference]: Start difference. First operand 2345 states and 3335 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:33,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:33,843 INFO L93 Difference]: Finished difference Result 2420 states and 3441 transitions. [2024-10-31 22:03:33,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:33,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 22:03:33,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:33,852 INFO L225 Difference]: With dead ends: 2420 [2024-10-31 22:03:33,853 INFO L226 Difference]: Without dead ends: 2420 [2024-10-31 22:03:33,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:33,854 INFO L432 NwaCegarLoop]: 856 mSDtfsCounter, 1621 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1627 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 1350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:33,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1627 Valid, 1572 Invalid, 1350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-10-31 22:03:33,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2024-10-31 22:03:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2322. [2024-10-31 22:03:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2322 states, 1830 states have (on average 1.787431693989071) internal successors, (3271), 2311 states have internal predecessors, (3271), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2322 states to 2322 states and 3289 transitions. [2024-10-31 22:03:33,908 INFO L78 Accepts]: Start accepts. Automaton has 2322 states and 3289 transitions. Word has length 12 [2024-10-31 22:03:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:33,909 INFO L471 AbstractCegarLoop]: Abstraction has 2322 states and 3289 transitions. [2024-10-31 22:03:33,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2322 states and 3289 transitions. [2024-10-31 22:03:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:03:33,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:33,910 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:33,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:03:33,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:33,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:33,911 INFO L85 PathProgramCache]: Analyzing trace with hash 242137369, now seen corresponding path program 1 times [2024-10-31 22:03:33,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:33,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654636922] [2024-10-31 22:03:33,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:33,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:34,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:34,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654636922] [2024-10-31 22:03:34,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654636922] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:34,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:34,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:34,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191534734] [2024-10-31 22:03:34,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:34,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:34,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:34,027 INFO L87 Difference]: Start difference. First operand 2322 states and 3289 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:34,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:34,077 INFO L93 Difference]: Finished difference Result 2184 states and 3083 transitions. [2024-10-31 22:03:34,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:34,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-10-31 22:03:34,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:34,086 INFO L225 Difference]: With dead ends: 2184 [2024-10-31 22:03:34,086 INFO L226 Difference]: Without dead ends: 2184 [2024-10-31 22:03:34,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:34,128 INFO L432 NwaCegarLoop]: 1345 mSDtfsCounter, 61 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:34,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2637 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:03:34,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2024-10-31 22:03:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2184. [2024-10-31 22:03:34,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2184 states, 1704 states have (on average 1.7987089201877935) internal successors, (3065), 2173 states have internal predecessors, (3065), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:34,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2184 states to 2184 states and 3083 transitions. [2024-10-31 22:03:34,175 INFO L78 Accepts]: Start accepts. Automaton has 2184 states and 3083 transitions. Word has length 12 [2024-10-31 22:03:34,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:34,176 INFO L471 AbstractCegarLoop]: Abstraction has 2184 states and 3083 transitions. [2024-10-31 22:03:34,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:34,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2184 states and 3083 transitions. [2024-10-31 22:03:34,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 22:03:34,176 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:34,176 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:34,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:03:34,177 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:34,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 765933813, now seen corresponding path program 1 times [2024-10-31 22:03:34,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:34,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957744833] [2024-10-31 22:03:34,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:34,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:34,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:34,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957744833] [2024-10-31 22:03:34,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957744833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:34,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:34,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:34,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147362973] [2024-10-31 22:03:34,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:34,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:34,239 INFO L87 Difference]: Start difference. First operand 2184 states and 3083 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:34,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:34,316 INFO L93 Difference]: Finished difference Result 2155 states and 3033 transitions. [2024-10-31 22:03:34,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:34,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 22:03:34,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:34,324 INFO L225 Difference]: With dead ends: 2155 [2024-10-31 22:03:34,324 INFO L226 Difference]: Without dead ends: 2155 [2024-10-31 22:03:34,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:34,326 INFO L432 NwaCegarLoop]: 1310 mSDtfsCounter, 41 mSDsluCounter, 2592 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:34,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3902 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:03:34,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-10-31 22:03:34,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 2149. [2024-10-31 22:03:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1676 states have (on average 1.795346062052506) internal successors, (3009), 2138 states have internal predecessors, (3009), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3027 transitions. [2024-10-31 22:03:34,371 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3027 transitions. Word has length 14 [2024-10-31 22:03:34,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:34,371 INFO L471 AbstractCegarLoop]: Abstraction has 2149 states and 3027 transitions. [2024-10-31 22:03:34,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:34,372 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3027 transitions. [2024-10-31 22:03:34,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-31 22:03:34,372 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:34,372 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, 1, 1, 1, 1, 1] [2024-10-31 22:03:34,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:03:34,373 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:34,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:34,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1739624061, now seen corresponding path program 1 times [2024-10-31 22:03:34,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:34,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888755864] [2024-10-31 22:03:34,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:34,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:34,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:34,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:34,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888755864] [2024-10-31 22:03:34,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888755864] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:34,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:34,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:34,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333516015] [2024-10-31 22:03:34,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:34,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:34,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:34,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:34,577 INFO L87 Difference]: Start difference. First operand 2149 states and 3027 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:36,153 INFO L93 Difference]: Finished difference Result 2398 states and 3195 transitions. [2024-10-31 22:03:36,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:03:36,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-10-31 22:03:36,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:36,162 INFO L225 Difference]: With dead ends: 2398 [2024-10-31 22:03:36,162 INFO L226 Difference]: Without dead ends: 2398 [2024-10-31 22:03:36,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:36,163 INFO L432 NwaCegarLoop]: 1223 mSDtfsCounter, 825 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 1339 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:36,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [825 Valid, 2627 Invalid, 1342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1339 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-10-31 22:03:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2024-10-31 22:03:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2145. [2024-10-31 22:03:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1676 states have (on average 1.7905727923627686) internal successors, (3001), 2134 states have internal predecessors, (3001), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3019 transitions. [2024-10-31 22:03:36,217 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3019 transitions. Word has length 28 [2024-10-31 22:03:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:36,218 INFO L471 AbstractCegarLoop]: Abstraction has 2145 states and 3019 transitions. [2024-10-31 22:03:36,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3019 transitions. [2024-10-31 22:03:36,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:03:36,222 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:36,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:36,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:03:36,223 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:36,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,224 INFO L85 PathProgramCache]: Analyzing trace with hash 2099910807, now seen corresponding path program 1 times [2024-10-31 22:03:36,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452737599] [2024-10-31 22:03:36,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:36,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452737599] [2024-10-31 22:03:36,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452737599] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:36,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:36,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:36,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252185400] [2024-10-31 22:03:36,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:36,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:03:36,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:03:36,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:03:36,402 INFO L87 Difference]: Start difference. First operand 2145 states and 3019 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:36,489 INFO L93 Difference]: Finished difference Result 2145 states and 3011 transitions. [2024-10-31 22:03:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:36,490 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-31 22:03:36,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:36,498 INFO L225 Difference]: With dead ends: 2145 [2024-10-31 22:03:36,498 INFO L226 Difference]: Without dead ends: 2145 [2024-10-31 22:03:36,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:36,500 INFO L432 NwaCegarLoop]: 1305 mSDtfsCounter, 21 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:36,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3884 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:03:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2024-10-31 22:03:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 2145. [2024-10-31 22:03:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1676 states have (on average 1.785799522673031) internal successors, (2993), 2134 states have internal predecessors, (2993), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3011 transitions. [2024-10-31 22:03:36,551 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3011 transitions. Word has length 62 [2024-10-31 22:03:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:36,553 INFO L471 AbstractCegarLoop]: Abstraction has 2145 states and 3011 transitions. [2024-10-31 22:03:36,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3011 transitions. [2024-10-31 22:03:36,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-10-31 22:03:36,555 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:36,555 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:36,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:03:36,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:36,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1896484451, now seen corresponding path program 1 times [2024-10-31 22:03:36,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122513803] [2024-10-31 22:03:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:36,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:36,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122513803] [2024-10-31 22:03:36,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122513803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:36,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:36,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:03:36,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863052926] [2024-10-31 22:03:36,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:36,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:03:36,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:36,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:03:36,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:36,706 INFO L87 Difference]: Start difference. First operand 2145 states and 3011 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:36,761 INFO L93 Difference]: Finished difference Result 1914 states and 2608 transitions. [2024-10-31 22:03:36,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:03:36,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-10-31 22:03:36,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:36,769 INFO L225 Difference]: With dead ends: 1914 [2024-10-31 22:03:36,769 INFO L226 Difference]: Without dead ends: 1914 [2024-10-31 22:03:36,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:03:36,770 INFO L432 NwaCegarLoop]: 1320 mSDtfsCounter, 54 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:36,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2612 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:03:36,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2024-10-31 22:03:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1914. [2024-10-31 22:03:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1445 states have (on average 1.792387543252595) internal successors, (2590), 1903 states have internal predecessors, (2590), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2608 transitions. [2024-10-31 22:03:36,810 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2608 transitions. Word has length 70 [2024-10-31 22:03:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:36,810 INFO L471 AbstractCegarLoop]: Abstraction has 1914 states and 2608 transitions. [2024-10-31 22:03:36,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:36,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2608 transitions. [2024-10-31 22:03:36,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-10-31 22:03:36,812 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:36,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:36,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:03:36,813 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:36,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2061322021, now seen corresponding path program 1 times [2024-10-31 22:03:36,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:36,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502735319] [2024-10-31 22:03:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:36,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:37,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:37,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502735319] [2024-10-31 22:03:37,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502735319] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:37,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:37,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:03:37,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824790915] [2024-10-31 22:03:37,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:37,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:37,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:37,497 INFO L87 Difference]: Start difference. First operand 1914 states and 2608 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:39,831 INFO L93 Difference]: Finished difference Result 1830 states and 2483 transitions. [2024-10-31 22:03:39,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:03:39,832 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2024-10-31 22:03:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:39,839 INFO L225 Difference]: With dead ends: 1830 [2024-10-31 22:03:39,840 INFO L226 Difference]: Without dead ends: 1830 [2024-10-31 22:03:39,840 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:39,841 INFO L432 NwaCegarLoop]: 573 mSDtfsCounter, 2256 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2262 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:39,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2262 Valid, 1594 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-10-31 22:03:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1830 states. [2024-10-31 22:03:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1830 to 1557. [2024-10-31 22:03:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1557 states, 1172 states have (on average 1.6902730375426622) internal successors, (1981), 1546 states have internal predecessors, (1981), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:39,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1557 states to 1557 states and 1999 transitions. [2024-10-31 22:03:39,884 INFO L78 Accepts]: Start accepts. Automaton has 1557 states and 1999 transitions. Word has length 73 [2024-10-31 22:03:39,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:39,885 INFO L471 AbstractCegarLoop]: Abstraction has 1557 states and 1999 transitions. [2024-10-31 22:03:39,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1557 states and 1999 transitions. [2024-10-31 22:03:39,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-31 22:03:39,890 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:39,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:39,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:03:39,890 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:39,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:39,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1316131126, now seen corresponding path program 1 times [2024-10-31 22:03:39,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:39,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599782471] [2024-10-31 22:03:39,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:39,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:40,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:40,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:40,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599782471] [2024-10-31 22:03:40,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599782471] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:40,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:40,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229307189] [2024-10-31 22:03:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:40,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:40,347 INFO L87 Difference]: Start difference. First operand 1557 states and 1999 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:41,582 INFO L93 Difference]: Finished difference Result 1556 states and 1997 transitions. [2024-10-31 22:03:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:41,582 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-31 22:03:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:41,588 INFO L225 Difference]: With dead ends: 1556 [2024-10-31 22:03:41,588 INFO L226 Difference]: Without dead ends: 1556 [2024-10-31 22:03:41,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:41,589 INFO L432 NwaCegarLoop]: 1232 mSDtfsCounter, 2 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:41,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3468 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-10-31 22:03:41,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2024-10-31 22:03:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1556. [2024-10-31 22:03:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 1172 states have (on average 1.6885665529010239) internal successors, (1979), 1545 states have internal predecessors, (1979), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:41,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 1997 transitions. [2024-10-31 22:03:41,676 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 1997 transitions. Word has length 78 [2024-10-31 22:03:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:41,677 INFO L471 AbstractCegarLoop]: Abstraction has 1556 states and 1997 transitions. [2024-10-31 22:03:41,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 1997 transitions. [2024-10-31 22:03:41,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-10-31 22:03:41,683 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:41,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:41,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:03:41,684 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:41,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:41,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1316131127, now seen corresponding path program 1 times [2024-10-31 22:03:41,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:41,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969259030] [2024-10-31 22:03:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:41,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:42,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:42,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969259030] [2024-10-31 22:03:42,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969259030] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:42,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:42,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:03:42,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017793229] [2024-10-31 22:03:42,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:42,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:03:42,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:42,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:03:42,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:03:42,320 INFO L87 Difference]: Start difference. First operand 1556 states and 1997 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:44,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:44,220 INFO L93 Difference]: Finished difference Result 1555 states and 1995 transitions. [2024-10-31 22:03:44,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:03:44,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-10-31 22:03:44,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:44,231 INFO L225 Difference]: With dead ends: 1555 [2024-10-31 22:03:44,231 INFO L226 Difference]: Without dead ends: 1555 [2024-10-31 22:03:44,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:03:44,232 INFO L432 NwaCegarLoop]: 1232 mSDtfsCounter, 1 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:44,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3483 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-10-31 22:03:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2024-10-31 22:03:44,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1555. [2024-10-31 22:03:44,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1170 states have (on average 1.6897435897435897) internal successors, (1977), 1544 states have internal predecessors, (1977), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-10-31 22:03:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1995 transitions. [2024-10-31 22:03:44,273 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1995 transitions. Word has length 78 [2024-10-31 22:03:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:44,273 INFO L471 AbstractCegarLoop]: Abstraction has 1555 states and 1995 transitions. [2024-10-31 22:03:44,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:03:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1995 transitions. [2024-10-31 22:03:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-31 22:03:44,275 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:44,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:44,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-31 22:03:44,275 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:44,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:44,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1591552707, now seen corresponding path program 1 times [2024-10-31 22:03:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236961849] [2024-10-31 22:03:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:44,584 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2024-10-31 22:03:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:03:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:03:44,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:03:44,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236961849] [2024-10-31 22:03:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236961849] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:03:44,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:03:44,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:03:44,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394722770] [2024-10-31 22:03:44,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:03:44,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:03:44,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:03:44,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:03:44,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:03:44,637 INFO L87 Difference]: Start difference. First operand 1555 states and 1995 transitions. Second operand has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:03:46,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:03:46,767 INFO L93 Difference]: Finished difference Result 1573 states and 2025 transitions. [2024-10-31 22:03:46,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:03:46,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2024-10-31 22:03:46,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:03:46,778 INFO L225 Difference]: With dead ends: 1573 [2024-10-31 22:03:46,779 INFO L226 Difference]: Without dead ends: 1573 [2024-10-31 22:03:46,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:03:46,780 INFO L432 NwaCegarLoop]: 1221 mSDtfsCounter, 10 mSDsluCounter, 4161 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:03:46,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 5382 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-10-31 22:03:46,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2024-10-31 22:03:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1564. [2024-10-31 22:03:46,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1564 states, 1178 states have (on average 1.6876061120543293) internal successors, (1988), 1551 states have internal predecessors, (1988), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2024-10-31 22:03:46,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2015 transitions. [2024-10-31 22:03:46,833 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2015 transitions. Word has length 86 [2024-10-31 22:03:46,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:03:46,834 INFO L471 AbstractCegarLoop]: Abstraction has 1564 states and 2015 transitions. [2024-10-31 22:03:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-31 22:03:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2015 transitions. [2024-10-31 22:03:46,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-10-31 22:03:46,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:03:46,836 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:03:46,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:03:46,837 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 625 more)] === [2024-10-31 22:03:46,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:03:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1591552706, now seen corresponding path program 1 times [2024-10-31 22:03:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:03:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536276122] [2024-10-31 22:03:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:03:46,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:03:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat