./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 21:05:21,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 21:05:22,001 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 21:05:22,006 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 21:05:22,008 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 21:05:22,026 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 21:05:22,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 21:05:22,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 21:05:22,029 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 21:05:22,030 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 21:05:22,031 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 21:05:22,031 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 21:05:22,032 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 21:05:22,032 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 21:05:22,033 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 21:05:22,034 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 21:05:22,034 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 21:05:22,034 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 21:05:22,034 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 21:05:22,034 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 21:05:22,035 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 21:05:22,035 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 21:05:22,035 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 21:05:22,035 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 21:05:22,036 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 21:05:22,036 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 21:05:22,036 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 21:05:22,036 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 21:05:22,036 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 21:05:22,037 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 21:05:22,037 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 21:05:22,037 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 21:05:22,037 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 21:05:22,037 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:05:22,037 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 21:05:22,038 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 21:05:22,039 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 21:05:22,039 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e277983cfe4b30513b023d34f2b840358d8a25fd7a5c39241cadd105379bfb92 [2024-11-22 21:05:22,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 21:05:22,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 21:05:22,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 21:05:22,259 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 21:05:22,260 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 21:05:22,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2024-11-22 21:05:23,508 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 21:05:23,741 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 21:05:23,741 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test2-1.i [2024-11-22 21:05:23,753 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01af183b/c188ed307dc3494eb7272488769a1001/FLAGc6d824440 [2024-11-22 21:05:24,065 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e01af183b/c188ed307dc3494eb7272488769a1001 [2024-11-22 21:05:24,067 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 21:05:24,068 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 21:05:24,070 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 21:05:24,070 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 21:05:24,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 21:05:24,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2771b10a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24, skipping insertion in model container [2024-11-22 21:05:24,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 21:05:24,445 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,479 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,483 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,489 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,495 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,534 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,535 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,539 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,540 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-22 21:05:24,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:05:24,562 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 21:05:24,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 21:05:24,683 INFO L204 MainTranslator]: Completed translation [2024-11-22 21:05:24,684 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24 WrapperNode [2024-11-22 21:05:24,685 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 21:05:24,685 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 21:05:24,685 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 21:05:24,686 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 21:05:24,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,810 INFO L138 Inliner]: procedures = 207, calls = 222, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1289 [2024-11-22 21:05:24,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 21:05:24,811 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 21:05:24,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 21:05:24,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 21:05:24,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,854 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,906 INFO L175 MemorySlicer]: Split 206 memory accesses to 3 slices as follows [2, 170, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 46 writes are split as follows [0, 42, 4]. [2024-11-22 21:05:24,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,907 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,938 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 21:05:24,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 21:05:24,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 21:05:24,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 21:05:24,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (1/1) ... [2024-11-22 21:05:24,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 21:05:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:24,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 21:05:25,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-22 21:05:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-22 21:05:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-22 21:05:25,044 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 21:05:25,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 21:05:25,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 21:05:25,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 21:05:25,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 21:05:25,183 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 21:05:25,185 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 21:05:25,187 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-22 21:05:25,221 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-22 21:05:25,238 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-22 21:05:26,589 INFO L? ?]: Removed 1028 outVars from TransFormulas that were not future-live. [2024-11-22 21:05:26,589 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 21:05:26,611 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 21:05:26,611 INFO L316 CfgBuilder]: Removed 54 assume(true) statements. [2024-11-22 21:05:26,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:05:26 BoogieIcfgContainer [2024-11-22 21:05:26,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 21:05:26,613 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 21:05:26,613 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 21:05:26,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 21:05:26,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:05:24" (1/3) ... [2024-11-22 21:05:26,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:05:26, skipping insertion in model container [2024-11-22 21:05:26,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:05:24" (2/3) ... [2024-11-22 21:05:26,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@680c43ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:05:26, skipping insertion in model container [2024-11-22 21:05:26,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:05:26" (3/3) ... [2024-11-22 21:05:26,625 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test2-1.i [2024-11-22 21:05:26,637 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 21:05:26,639 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 420 error locations. [2024-11-22 21:05:26,693 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 21:05:26,700 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;@7ad0d207, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 21:05:26,700 INFO L334 AbstractCegarLoop]: Starting to check reachability of 420 error locations. [2024-11-22 21:05:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 21:05:26,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 21:05:26,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:26,714 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 21:05:26,715 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr419ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:26,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:26,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1758832, now seen corresponding path program 1 times [2024-11-22 21:05:26,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:26,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112063335] [2024-11-22 21:05:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:26,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:26,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112063335] [2024-11-22 21:05:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112063335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247129697] [2024-11-22 21:05:26,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:26,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:26,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:26,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:26,952 INFO L87 Difference]: Start difference. First operand has 1053 states, 631 states have (on average 2.0142630744849446) internal successors, (1271), 1048 states have internal predecessors, (1271), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2024-11-22 21:05:27,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:27,699 INFO L93 Difference]: Finished difference Result 1349 states and 1602 transitions. [2024-11-22 21:05:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:27,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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 [2024-11-22 21:05:27,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:27,729 INFO L225 Difference]: With dead ends: 1349 [2024-11-22 21:05:27,729 INFO L226 Difference]: Without dead ends: 1345 [2024-11-22 21:05:27,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:27,734 INFO L432 NwaCegarLoop]: 1098 mSDtfsCounter, 382 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:27,735 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 2648 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 21:05:27,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2024-11-22 21:05:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1260. [2024-11-22 21:05:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 844 states have (on average 1.8815165876777251) internal successors, (1588), 1255 states have internal predecessors, (1588), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 21:05:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1594 transitions. [2024-11-22 21:05:27,817 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1594 transitions. Word has length 4 [2024-11-22 21:05:27,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:27,818 INFO L471 AbstractCegarLoop]: Abstraction has 1260 states and 1594 transitions. [2024-11-22 21:05:27,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 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) [2024-11-22 21:05:27,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1594 transitions. [2024-11-22 21:05:27,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 21:05:27,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:27,818 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 21:05:27,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 21:05:27,819 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:27,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:27,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-22 21:05:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:27,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744727207] [2024-11-22 21:05:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:27,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:27,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:27,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744727207] [2024-11-22 21:05:27,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744727207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:27,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:27,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:05:27,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284550848] [2024-11-22 21:05:27,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:27,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:27,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:27,894 INFO L87 Difference]: Start difference. First operand 1260 states and 1594 transitions. 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) [2024-11-22 21:05:28,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:28,306 INFO L93 Difference]: Finished difference Result 1257 states and 1586 transitions. [2024-11-22 21:05:28,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:28,306 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 [2024-11-22 21:05:28,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:28,310 INFO L225 Difference]: With dead ends: 1257 [2024-11-22 21:05:28,311 INFO L226 Difference]: Without dead ends: 1257 [2024-11-22 21:05:28,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:28,312 INFO L432 NwaCegarLoop]: 817 mSDtfsCounter, 1086 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:28,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 861 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 21:05:28,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2024-11-22 21:05:28,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1257. [2024-11-22 21:05:28,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 852 states have (on average 1.8544600938967135) internal successors, (1580), 1252 states have internal predecessors, (1580), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 21:05:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1586 transitions. [2024-11-22 21:05:28,335 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1586 transitions. Word has length 4 [2024-11-22 21:05:28,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:28,335 INFO L471 AbstractCegarLoop]: Abstraction has 1257 states and 1586 transitions. [2024-11-22 21:05:28,335 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) [2024-11-22 21:05:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1586 transitions. [2024-11-22 21:05:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-22 21:05:28,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:28,336 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-22 21:05:28,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 21:05:28,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:28,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:28,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-22 21:05:28,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:28,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816316795] [2024-11-22 21:05:28,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:28,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:28,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816316795] [2024-11-22 21:05:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816316795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:28,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:28,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:05:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470198777] [2024-11-22 21:05:28,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:28,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:28,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:28,395 INFO L87 Difference]: Start difference. First operand 1257 states and 1586 transitions. 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) [2024-11-22 21:05:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:29,083 INFO L93 Difference]: Finished difference Result 2016 states and 2490 transitions. [2024-11-22 21:05:29,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:29,083 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 [2024-11-22 21:05:29,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:29,090 INFO L225 Difference]: With dead ends: 2016 [2024-11-22 21:05:29,090 INFO L226 Difference]: Without dead ends: 2016 [2024-11-22 21:05:29,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:29,092 INFO L432 NwaCegarLoop]: 921 mSDtfsCounter, 903 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:29,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 1693 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 21:05:29,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2024-11-22 21:05:29,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1754. [2024-11-22 21:05:29,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1350 states have (on average 1.8288888888888888) internal successors, (2469), 1747 states have internal predecessors, (2469), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2479 transitions. [2024-11-22 21:05:29,122 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2479 transitions. Word has length 4 [2024-11-22 21:05:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:29,122 INFO L471 AbstractCegarLoop]: Abstraction has 1754 states and 2479 transitions. [2024-11-22 21:05:29,122 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) [2024-11-22 21:05:29,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2479 transitions. [2024-11-22 21:05:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 21:05:29,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:29,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:29,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 21:05:29,123 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:29,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:29,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-22 21:05:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:29,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443120067] [2024-11-22 21:05:29,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:29,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443120067] [2024-11-22 21:05:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443120067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:29,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:29,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:05:29,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565812812] [2024-11-22 21:05:29,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:29,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:29,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:29,170 INFO L87 Difference]: Start difference. First operand 1754 states and 2479 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:29,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:29,660 INFO L93 Difference]: Finished difference Result 1792 states and 2410 transitions. [2024-11-22 21:05:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:29,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-22 21:05:29,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:29,665 INFO L225 Difference]: With dead ends: 1792 [2024-11-22 21:05:29,666 INFO L226 Difference]: Without dead ends: 1792 [2024-11-22 21:05:29,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:29,669 INFO L432 NwaCegarLoop]: 1122 mSDtfsCounter, 1071 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:29,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1418 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 21:05:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2024-11-22 21:05:29,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1707. [2024-11-22 21:05:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1350 states have (on average 1.7762962962962963) internal successors, (2398), 1700 states have internal predecessors, (2398), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:29,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2408 transitions. [2024-11-22 21:05:29,697 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2408 transitions. Word has length 9 [2024-11-22 21:05:29,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:29,697 INFO L471 AbstractCegarLoop]: Abstraction has 1707 states and 2408 transitions. [2024-11-22 21:05:29,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:29,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2408 transitions. [2024-11-22 21:05:29,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-22 21:05:29,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:29,698 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:29,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 21:05:29,699 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:29,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:29,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-22 21:05:29,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:29,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84048044] [2024-11-22 21:05:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:29,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:29,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:29,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84048044] [2024-11-22 21:05:29,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84048044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:29,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:29,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 21:05:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819867555] [2024-11-22 21:05:29,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:29,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:29,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:29,808 INFO L87 Difference]: Start difference. First operand 1707 states and 2408 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:30,274 INFO L93 Difference]: Finished difference Result 2000 states and 2752 transitions. [2024-11-22 21:05:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2024-11-22 21:05:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:30,279 INFO L225 Difference]: With dead ends: 2000 [2024-11-22 21:05:30,280 INFO L226 Difference]: Without dead ends: 2000 [2024-11-22 21:05:30,280 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:30,281 INFO L432 NwaCegarLoop]: 1252 mSDtfsCounter, 863 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:30,282 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1666 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 21:05:30,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2024-11-22 21:05:30,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1682. [2024-11-22 21:05:30,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1350 states have (on average 1.74) internal successors, (2349), 1675 states have internal predecessors, (2349), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2359 transitions. [2024-11-22 21:05:30,304 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2359 transitions. Word has length 9 [2024-11-22 21:05:30,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:30,305 INFO L471 AbstractCegarLoop]: Abstraction has 1682 states and 2359 transitions. [2024-11-22 21:05:30,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:30,306 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2359 transitions. [2024-11-22 21:05:30,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 21:05:30,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:30,307 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:30,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 21:05:30,307 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:30,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:30,308 INFO L85 PathProgramCache]: Analyzing trace with hash -186143240, now seen corresponding path program 1 times [2024-11-22 21:05:30,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:30,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175402089] [2024-11-22 21:05:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:30,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175402089] [2024-11-22 21:05:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175402089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:30,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:30,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:30,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894970232] [2024-11-22 21:05:30,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:30,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:30,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:30,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:30,358 INFO L87 Difference]: Start difference. First operand 1682 states and 2359 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:30,817 INFO L93 Difference]: Finished difference Result 1806 states and 2518 transitions. [2024-11-22 21:05:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 21:05:30,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:30,822 INFO L225 Difference]: With dead ends: 1806 [2024-11-22 21:05:30,823 INFO L226 Difference]: Without dead ends: 1806 [2024-11-22 21:05:30,823 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:30,824 INFO L432 NwaCegarLoop]: 761 mSDtfsCounter, 1286 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:30,824 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1289 Valid, 1400 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 21:05:30,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-11-22 21:05:30,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1659. [2024-11-22 21:05:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1659 states, 1350 states have (on average 1.6888888888888889) internal successors, (2280), 1652 states have internal predecessors, (2280), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1659 states to 1659 states and 2290 transitions. [2024-11-22 21:05:30,847 INFO L78 Accepts]: Start accepts. Automaton has 1659 states and 2290 transitions. Word has length 14 [2024-11-22 21:05:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:30,848 INFO L471 AbstractCegarLoop]: Abstraction has 1659 states and 2290 transitions. [2024-11-22 21:05:30,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:30,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1659 states and 2290 transitions. [2024-11-22 21:05:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 21:05:30,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:30,848 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:30,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 21:05:30,849 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:30,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:30,849 INFO L85 PathProgramCache]: Analyzing trace with hash -186143239, now seen corresponding path program 1 times [2024-11-22 21:05:30,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:30,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543137510] [2024-11-22 21:05:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:30,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:30,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:30,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:30,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543137510] [2024-11-22 21:05:30,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543137510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:30,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:30,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:30,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762346722] [2024-11-22 21:05:30,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:30,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:30,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:30,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:30,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:30,924 INFO L87 Difference]: Start difference. First operand 1659 states and 2290 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:31,674 INFO L93 Difference]: Finished difference Result 2160 states and 2773 transitions. [2024-11-22 21:05:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:31,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-22 21:05:31,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:31,680 INFO L225 Difference]: With dead ends: 2160 [2024-11-22 21:05:31,680 INFO L226 Difference]: Without dead ends: 2160 [2024-11-22 21:05:31,680 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:31,681 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 1277 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:31,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1279 Valid, 2252 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 21:05:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2160 states. [2024-11-22 21:05:31,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2160 to 1755. [2024-11-22 21:05:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1446 states have (on average 1.669432918395574) internal successors, (2414), 1748 states have internal predecessors, (2414), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2424 transitions. [2024-11-22 21:05:31,704 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2424 transitions. Word has length 14 [2024-11-22 21:05:31,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:31,705 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2424 transitions. [2024-11-22 21:05:31,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:31,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2424 transitions. [2024-11-22 21:05:31,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 21:05:31,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:31,706 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:31,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 21:05:31,706 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:31,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:31,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1505170837, now seen corresponding path program 1 times [2024-11-22 21:05:31,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:31,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175336416] [2024-11-22 21:05:31,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:31,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:31,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:31,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:31,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175336416] [2024-11-22 21:05:31,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175336416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:31,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:31,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:31,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052757555] [2024-11-22 21:05:31,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:31,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:31,762 INFO L87 Difference]: Start difference. First operand 1755 states and 2424 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:31,812 INFO L93 Difference]: Finished difference Result 1427 states and 1907 transitions. [2024-11-22 21:05:31,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:05:31,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-22 21:05:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:31,816 INFO L225 Difference]: With dead ends: 1427 [2024-11-22 21:05:31,816 INFO L226 Difference]: Without dead ends: 1427 [2024-11-22 21:05:31,816 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 [2024-11-22 21:05:31,817 INFO L432 NwaCegarLoop]: 944 mSDtfsCounter, 45 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:31,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2809 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:31,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2024-11-22 21:05:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1427. [2024-11-22 21:05:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1137 states have (on average 1.6684256816182939) internal successors, (1897), 1420 states have internal predecessors, (1897), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:31,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1907 transitions. [2024-11-22 21:05:31,836 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1907 transitions. Word has length 16 [2024-11-22 21:05:31,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:31,837 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1907 transitions. [2024-11-22 21:05:31,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:31,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1907 transitions. [2024-11-22 21:05:31,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 21:05:31,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:31,838 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:31,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 21:05:31,839 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:31,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:31,839 INFO L85 PathProgramCache]: Analyzing trace with hash -179577126, now seen corresponding path program 1 times [2024-11-22 21:05:31,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:31,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123121451] [2024-11-22 21:05:31,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:31,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:31,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:31,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123121451] [2024-11-22 21:05:31,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123121451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:31,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:31,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552634390] [2024-11-22 21:05:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:31,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:31,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:31,895 INFO L87 Difference]: Start difference. First operand 1427 states and 1907 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:32,356 INFO L93 Difference]: Finished difference Result 1541 states and 2015 transitions. [2024-11-22 21:05:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:32,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-22 21:05:32,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:32,361 INFO L225 Difference]: With dead ends: 1541 [2024-11-22 21:05:32,361 INFO L226 Difference]: Without dead ends: 1541 [2024-11-22 21:05:32,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:32,362 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 1182 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:32,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1185 Valid, 1653 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 21:05:32,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1541 states. [2024-11-22 21:05:32,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1541 to 1404. [2024-11-22 21:05:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 1137 states have (on average 1.6279683377308707) internal successors, (1851), 1397 states have internal predecessors, (1851), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1861 transitions. [2024-11-22 21:05:32,379 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1861 transitions. Word has length 19 [2024-11-22 21:05:32,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:32,379 INFO L471 AbstractCegarLoop]: Abstraction has 1404 states and 1861 transitions. [2024-11-22 21:05:32,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1861 transitions. [2024-11-22 21:05:32,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-22 21:05:32,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:32,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:32,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 21:05:32,380 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:32,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:32,381 INFO L85 PathProgramCache]: Analyzing trace with hash -179577125, now seen corresponding path program 1 times [2024-11-22 21:05:32,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:32,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149827122] [2024-11-22 21:05:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:32,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149827122] [2024-11-22 21:05:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149827122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:32,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743874472] [2024-11-22 21:05:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:32,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:32,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:32,451 INFO L87 Difference]: Start difference. First operand 1404 states and 1861 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:32,476 INFO L93 Difference]: Finished difference Result 1266 states and 1655 transitions. [2024-11-22 21:05:32,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:32,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-22 21:05:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:32,480 INFO L225 Difference]: With dead ends: 1266 [2024-11-22 21:05:32,481 INFO L226 Difference]: Without dead ends: 1266 [2024-11-22 21:05:32,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:32,482 INFO L432 NwaCegarLoop]: 828 mSDtfsCounter, 61 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:32,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1603 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-22 21:05:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-22 21:05:32,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1011 states have (on average 1.6271018793273986) internal successors, (1645), 1259 states have internal predecessors, (1645), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:32,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1655 transitions. [2024-11-22 21:05:32,500 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1655 transitions. Word has length 19 [2024-11-22 21:05:32,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:32,500 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1655 transitions. [2024-11-22 21:05:32,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1655 transitions. [2024-11-22 21:05:32,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 21:05:32,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:32,502 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:32,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 21:05:32,502 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:32,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash -774768265, now seen corresponding path program 1 times [2024-11-22 21:05:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282005377] [2024-11-22 21:05:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:32,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:32,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:32,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282005377] [2024-11-22 21:05:32,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282005377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:32,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108638634] [2024-11-22 21:05:32,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:32,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:32,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:32,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:32,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:32,554 INFO L87 Difference]: Start difference. First operand 1266 states and 1655 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:32,598 INFO L93 Difference]: Finished difference Result 1237 states and 1605 transitions. [2024-11-22 21:05:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:32,599 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2024-11-22 21:05:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:32,602 INFO L225 Difference]: With dead ends: 1237 [2024-11-22 21:05:32,602 INFO L226 Difference]: Without dead ends: 1237 [2024-11-22 21:05:32,602 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 [2024-11-22 21:05:32,603 INFO L432 NwaCegarLoop]: 793 mSDtfsCounter, 41 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 2351 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 [2024-11-22 21:05:32,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 2351 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:32,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2024-11-22 21:05:32,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1231. [2024-11-22 21:05:32,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 983 states have (on average 1.6164801627670398) internal successors, (1589), 1224 states have internal predecessors, (1589), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:32,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1599 transitions. [2024-11-22 21:05:32,618 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1599 transitions. Word has length 21 [2024-11-22 21:05:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:32,619 INFO L471 AbstractCegarLoop]: Abstraction has 1231 states and 1599 transitions. [2024-11-22 21:05:32,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1599 transitions. [2024-11-22 21:05:32,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-22 21:05:32,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:32,620 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] [2024-11-22 21:05:32,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 21:05:32,620 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:32,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:32,620 INFO L85 PathProgramCache]: Analyzing trace with hash -441307835, now seen corresponding path program 1 times [2024-11-22 21:05:32,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:32,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142711785] [2024-11-22 21:05:32,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:32,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142711785] [2024-11-22 21:05:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142711785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677796204] [2024-11-22 21:05:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:32,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:32,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:32,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:32,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:32,733 INFO L87 Difference]: Start difference. First operand 1231 states and 1599 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:33,251 INFO L93 Difference]: Finished difference Result 1813 states and 2395 transitions. [2024-11-22 21:05:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 21:05:33,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-22 21:05:33,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:33,257 INFO L225 Difference]: With dead ends: 1813 [2024-11-22 21:05:33,257 INFO L226 Difference]: Without dead ends: 1813 [2024-11-22 21:05:33,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:33,258 INFO L432 NwaCegarLoop]: 897 mSDtfsCounter, 658 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:33,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1905 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 21:05:33,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2024-11-22 21:05:33,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1227. [2024-11-22 21:05:33,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 983 states have (on average 1.6083418107833163) internal successors, (1581), 1220 states have internal predecessors, (1581), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:33,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1591 transitions. [2024-11-22 21:05:33,276 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1591 transitions. Word has length 35 [2024-11-22 21:05:33,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:33,277 INFO L471 AbstractCegarLoop]: Abstraction has 1227 states and 1591 transitions. [2024-11-22 21:05:33,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1591 transitions. [2024-11-22 21:05:33,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 21:05:33,280 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:33,281 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] [2024-11-22 21:05:33,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 21:05:33,281 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:33,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:33,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1141586281, now seen corresponding path program 1 times [2024-11-22 21:05:33,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:33,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015000552] [2024-11-22 21:05:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:33,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:33,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:33,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015000552] [2024-11-22 21:05:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015000552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894115803] [2024-11-22 21:05:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:33,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:33,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:33,366 INFO L87 Difference]: Start difference. First operand 1227 states and 1591 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:33,405 INFO L93 Difference]: Finished difference Result 1209 states and 1561 transitions. [2024-11-22 21:05:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:05:33,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-22 21:05:33,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:33,408 INFO L225 Difference]: With dead ends: 1209 [2024-11-22 21:05:33,408 INFO L226 Difference]: Without dead ends: 1209 [2024-11-22 21:05:33,408 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 [2024-11-22 21:05:33,409 INFO L432 NwaCegarLoop]: 788 mSDtfsCounter, 27 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2327 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 [2024-11-22 21:05:33,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2327 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:33,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-22 21:05:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-22 21:05:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 965 states have (on average 1.6072538860103627) internal successors, (1551), 1202 states have internal predecessors, (1551), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1561 transitions. [2024-11-22 21:05:33,449 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1561 transitions. Word has length 62 [2024-11-22 21:05:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:33,450 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1561 transitions. [2024-11-22 21:05:33,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1561 transitions. [2024-11-22 21:05:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 21:05:33,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:33,453 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] [2024-11-22 21:05:33,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 21:05:33,454 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:33,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:33,454 INFO L85 PathProgramCache]: Analyzing trace with hash 116988697, now seen corresponding path program 1 times [2024-11-22 21:05:33,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:33,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972576594] [2024-11-22 21:05:33,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:33,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:33,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:33,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:33,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972576594] [2024-11-22 21:05:33,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972576594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:33,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:33,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:33,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640100746] [2024-11-22 21:05:33,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:33,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 21:05:33,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:33,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 21:05:33,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 21:05:33,522 INFO L87 Difference]: Start difference. First operand 1209 states and 1561 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:33,559 INFO L93 Difference]: Finished difference Result 1209 states and 1553 transitions. [2024-11-22 21:05:33,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 21:05:33,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-22 21:05:33,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:33,562 INFO L225 Difference]: With dead ends: 1209 [2024-11-22 21:05:33,562 INFO L226 Difference]: Without dead ends: 1209 [2024-11-22 21:05:33,562 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 [2024-11-22 21:05:33,563 INFO L432 NwaCegarLoop]: 784 mSDtfsCounter, 21 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2321 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 [2024-11-22 21:05:33,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2321 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:33,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2024-11-22 21:05:33,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1209. [2024-11-22 21:05:33,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 965 states have (on average 1.5989637305699482) internal successors, (1543), 1202 states have internal predecessors, (1543), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:33,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1553 transitions. [2024-11-22 21:05:33,575 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1553 transitions. Word has length 69 [2024-11-22 21:05:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:33,575 INFO L471 AbstractCegarLoop]: Abstraction has 1209 states and 1553 transitions. [2024-11-22 21:05:33,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,575 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1553 transitions. [2024-11-22 21:05:33,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-22 21:05:33,575 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:33,576 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] [2024-11-22 21:05:33,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 21:05:33,576 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr376REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:33,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:33,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1547714973, now seen corresponding path program 1 times [2024-11-22 21:05:33,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:33,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081008420] [2024-11-22 21:05:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:33,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:33,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:33,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:33,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081008420] [2024-11-22 21:05:33,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081008420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:33,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:33,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 21:05:33,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244567794] [2024-11-22 21:05:33,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:33,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 21:05:33,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:33,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 21:05:33,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:33,651 INFO L87 Difference]: Start difference. First operand 1209 states and 1553 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:33,693 INFO L93 Difference]: Finished difference Result 1474 states and 1856 transitions. [2024-11-22 21:05:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 21:05:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-22 21:05:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:33,697 INFO L225 Difference]: With dead ends: 1474 [2024-11-22 21:05:33,697 INFO L226 Difference]: Without dead ends: 1474 [2024-11-22 21:05:33,697 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 21:05:33,697 INFO L432 NwaCegarLoop]: 806 mSDtfsCounter, 201 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:33,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 1559 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 21:05:33,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2024-11-22 21:05:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1461. [2024-11-22 21:05:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 1217 states have (on average 1.513557929334429) internal successors, (1842), 1454 states have internal predecessors, (1842), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:33,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1852 transitions. [2024-11-22 21:05:33,712 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1852 transitions. Word has length 70 [2024-11-22 21:05:33,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:33,712 INFO L471 AbstractCegarLoop]: Abstraction has 1461 states and 1852 transitions. [2024-11-22 21:05:33,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:33,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1852 transitions. [2024-11-22 21:05:33,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 21:05:33,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:33,713 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] [2024-11-22 21:05:33,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 21:05:33,713 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:33,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:33,714 INFO L85 PathProgramCache]: Analyzing trace with hash 616886410, now seen corresponding path program 1 times [2024-11-22 21:05:33,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:33,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819530010] [2024-11-22 21:05:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:33,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:34,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819530010] [2024-11-22 21:05:34,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819530010] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:34,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:34,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 21:05:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147233169] [2024-11-22 21:05:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:34,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:05:34,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:05:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:05:34,008 INFO L87 Difference]: Start difference. First operand 1461 states and 1852 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:34,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:34,108 INFO L93 Difference]: Finished difference Result 2081 states and 2585 transitions. [2024-11-22 21:05:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:05:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2024-11-22 21:05:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:34,116 INFO L225 Difference]: With dead ends: 2081 [2024-11-22 21:05:34,116 INFO L226 Difference]: Without dead ends: 2078 [2024-11-22 21:05:34,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:05:34,117 INFO L432 NwaCegarLoop]: 1004 mSDtfsCounter, 727 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 3773 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:34,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 3773 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 21:05:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2078 states. [2024-11-22 21:05:34,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2078 to 1362. [2024-11-22 21:05:34,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1118 states have (on average 1.5330948121645795) internal successors, (1714), 1355 states have internal predecessors, (1714), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1724 transitions. [2024-11-22 21:05:34,138 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1724 transitions. Word has length 76 [2024-11-22 21:05:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:34,138 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 1724 transitions. [2024-11-22 21:05:34,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1724 transitions. [2024-11-22 21:05:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 21:05:34,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:34,139 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] [2024-11-22 21:05:34,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 21:05:34,139 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:34,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414216, now seen corresponding path program 1 times [2024-11-22 21:05:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536387273] [2024-11-22 21:05:34,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:34,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:34,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:34,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536387273] [2024-11-22 21:05:34,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536387273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:34,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:34,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:34,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390555881] [2024-11-22 21:05:34,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:34,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:05:34,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:05:34,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:34,325 INFO L87 Difference]: Start difference. First operand 1362 states and 1724 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:34,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:34,721 INFO L93 Difference]: Finished difference Result 1361 states and 1722 transitions. [2024-11-22 21:05:34,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:05:34,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-22 21:05:34,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:34,728 INFO L225 Difference]: With dead ends: 1361 [2024-11-22 21:05:34,731 INFO L226 Difference]: Without dead ends: 1361 [2024-11-22 21:05:34,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:05:34,732 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 2 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:34,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2327 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 21:05:34,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2024-11-22 21:05:34,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2024-11-22 21:05:34,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1118 states have (on average 1.5313059033989267) internal successors, (1712), 1354 states have internal predecessors, (1712), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1722 transitions. [2024-11-22 21:05:34,765 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1722 transitions. Word has length 85 [2024-11-22 21:05:34,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:34,766 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1722 transitions. [2024-11-22 21:05:34,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:34,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1722 transitions. [2024-11-22 21:05:34,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-22 21:05:34,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:34,766 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] [2024-11-22 21:05:34,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 21:05:34,766 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:34,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:34,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1225414215, now seen corresponding path program 1 times [2024-11-22 21:05:34,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:34,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18510324] [2024-11-22 21:05:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18510324] [2024-11-22 21:05:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18510324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 21:05:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835574374] [2024-11-22 21:05:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:35,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 21:05:35,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 21:05:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 21:05:35,119 INFO L87 Difference]: Start difference. First operand 1361 states and 1722 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:35,673 INFO L93 Difference]: Finished difference Result 1360 states and 1720 transitions. [2024-11-22 21:05:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:05:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2024-11-22 21:05:35,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:35,677 INFO L225 Difference]: With dead ends: 1360 [2024-11-22 21:05:35,677 INFO L226 Difference]: Without dead ends: 1360 [2024-11-22 21:05:35,677 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:05:35,678 INFO L432 NwaCegarLoop]: 795 mSDtfsCounter, 1 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:35,678 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2253 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 21:05:35,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2024-11-22 21:05:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1360. [2024-11-22 21:05:35,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1360 states, 1116 states have (on average 1.532258064516129) internal successors, (1710), 1353 states have internal predecessors, (1710), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1360 states to 1360 states and 1720 transitions. [2024-11-22 21:05:35,698 INFO L78 Accepts]: Start accepts. Automaton has 1360 states and 1720 transitions. Word has length 85 [2024-11-22 21:05:35,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:35,699 INFO L471 AbstractCegarLoop]: Abstraction has 1360 states and 1720 transitions. [2024-11-22 21:05:35,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 21:05:35,700 INFO L276 IsEmpty]: Start isEmpty. Operand 1360 states and 1720 transitions. [2024-11-22 21:05:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 21:05:35,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:35,700 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:35,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 21:05:35,700 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:35,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash 286448127, now seen corresponding path program 1 times [2024-11-22 21:05:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:35,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195212153] [2024-11-22 21:05:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:35,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:35,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:35,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195212153] [2024-11-22 21:05:35,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195212153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:35,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:35,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 21:05:35,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335139509] [2024-11-22 21:05:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:35,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 21:05:35,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 21:05:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:05:35,872 INFO L87 Difference]: Start difference. First operand 1360 states and 1720 transitions. Second operand has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:36,469 INFO L93 Difference]: Finished difference Result 1378 states and 1746 transitions. [2024-11-22 21:05:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 21:05:36,469 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-22 21:05:36,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:36,478 INFO L225 Difference]: With dead ends: 1378 [2024-11-22 21:05:36,479 INFO L226 Difference]: Without dead ends: 1378 [2024-11-22 21:05:36,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-22 21:05:36,479 INFO L432 NwaCegarLoop]: 787 mSDtfsCounter, 6 mSDsluCounter, 2849 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:36,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3636 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 21:05:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2024-11-22 21:05:36,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1369. [2024-11-22 21:05:36,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1124 states have (on average 1.5311387900355873) internal successors, (1721), 1360 states have internal predecessors, (1721), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 21:05:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1736 transitions. [2024-11-22 21:05:36,506 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1736 transitions. Word has length 93 [2024-11-22 21:05:36,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:36,506 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1736 transitions. [2024-11-22 21:05:36,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:36,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1736 transitions. [2024-11-22 21:05:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-22 21:05:36,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:36,507 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:36,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 21:05:36,507 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:36,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:36,508 INFO L85 PathProgramCache]: Analyzing trace with hash 286448128, now seen corresponding path program 1 times [2024-11-22 21:05:36,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:36,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683065943] [2024-11-22 21:05:36,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:36,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:36,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683065943] [2024-11-22 21:05:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683065943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:36,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:36,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 21:05:36,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613875003] [2024-11-22 21:05:36,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:36,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 21:05:36,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:36,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 21:05:36,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 21:05:36,936 INFO L87 Difference]: Start difference. First operand 1369 states and 1736 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:37,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:37,546 INFO L93 Difference]: Finished difference Result 1369 states and 1734 transitions. [2024-11-22 21:05:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 21:05:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2024-11-22 21:05:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:37,552 INFO L225 Difference]: With dead ends: 1369 [2024-11-22 21:05:37,552 INFO L226 Difference]: Without dead ends: 1369 [2024-11-22 21:05:37,552 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 21:05:37,553 INFO L432 NwaCegarLoop]: 791 mSDtfsCounter, 1 mSDsluCounter, 2133 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:37,553 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2924 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-22 21:05:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2024-11-22 21:05:37,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1369. [2024-11-22 21:05:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 1124 states have (on average 1.5293594306049823) internal successors, (1719), 1360 states have internal predecessors, (1719), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-22 21:05:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1734 transitions. [2024-11-22 21:05:37,567 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1734 transitions. Word has length 93 [2024-11-22 21:05:37,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:37,567 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1734 transitions. [2024-11-22 21:05:37,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:37,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1734 transitions. [2024-11-22 21:05:37,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 21:05:37,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:37,568 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:37,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 21:05:37,569 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:37,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:37,569 INFO L85 PathProgramCache]: Analyzing trace with hash 894772636, now seen corresponding path program 1 times [2024-11-22 21:05:37,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:37,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520373095] [2024-11-22 21:05:37,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:37,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:37,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:37,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520373095] [2024-11-22 21:05:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520373095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:37,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504194258] [2024-11-22 21:05:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:37,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:37,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 21:05:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:38,093 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 21:05:38,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:38,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:38,255 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:05:38,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:05:38,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:05:38,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:05:38,521 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:38,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:38,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:05:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:38,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:05:38,618 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_618 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_618) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 21:05:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504194258] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:38,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:05:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2024-11-22 21:05:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437523953] [2024-11-22 21:05:38,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:05:38,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 21:05:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 21:05:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=290, Unknown=1, NotChecked=34, Total=380 [2024-11-22 21:05:38,621 INFO L87 Difference]: Start difference. First operand 1369 states and 1734 transitions. Second operand has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:40,252 INFO L93 Difference]: Finished difference Result 1376 states and 1740 transitions. [2024-11-22 21:05:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:05:40,255 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-22 21:05:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:40,258 INFO L225 Difference]: With dead ends: 1376 [2024-11-22 21:05:40,258 INFO L226 Difference]: Without dead ends: 1376 [2024-11-22 21:05:40,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=427, Unknown=1, NotChecked=42, Total=552 [2024-11-22 21:05:40,258 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 707 mSDsluCounter, 5365 mSDsCounter, 0 mSdLazyCounter, 3657 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 5865 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:40,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 5865 Invalid, 3673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 3657 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 21:05:40,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2024-11-22 21:05:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1373. [2024-11-22 21:05:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1373 states, 1128 states have (on average 1.5265957446808511) internal successors, (1722), 1363 states have internal predecessors, (1722), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:40,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1373 states to 1373 states and 1734 transitions. [2024-11-22 21:05:40,271 INFO L78 Accepts]: Start accepts. Automaton has 1373 states and 1734 transitions. Word has length 94 [2024-11-22 21:05:40,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:40,271 INFO L471 AbstractCegarLoop]: Abstraction has 1373 states and 1734 transitions. [2024-11-22 21:05:40,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 9.25) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 1373 states and 1734 transitions. [2024-11-22 21:05:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-22 21:05:40,273 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:40,273 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:40,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 21:05:40,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-22 21:05:40,477 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:40,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:40,478 INFO L85 PathProgramCache]: Analyzing trace with hash 894772637, now seen corresponding path program 1 times [2024-11-22 21:05:40,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:40,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448711315] [2024-11-22 21:05:40,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:40,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:41,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:41,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448711315] [2024-11-22 21:05:41,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448711315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:41,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675655349] [2024-11-22 21:05:41,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:41,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:41,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:41,059 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:41,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 21:05:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:41,222 INFO L255 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 21:05:41,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:41,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:41,324 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 21:05:41,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 21:05:41,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:05:41,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:05:41,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 21:05:41,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:05:41,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:05:41,494 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:41,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:05:41,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:05:41,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:05:41,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:05:41,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:41,548 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:05:41,621 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_762 (Array Int Int)) (v_ArrVal_763 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_763 (Array Int Int))) (<= 0 (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 21:05:41,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675655349] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:41,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:05:41,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2024-11-22 21:05:41,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474468814] [2024-11-22 21:05:41,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:05:41,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:05:41,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:41,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:05:41,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=324, Unknown=1, NotChecked=36, Total=420 [2024-11-22 21:05:41,625 INFO L87 Difference]: Start difference. First operand 1373 states and 1734 transitions. Second operand has 18 states, 15 states have (on average 9.866666666666667) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:43,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:43,156 INFO L93 Difference]: Finished difference Result 1375 states and 1738 transitions. [2024-11-22 21:05:43,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:05:43,157 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 9.866666666666667) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 94 [2024-11-22 21:05:43,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:43,159 INFO L225 Difference]: With dead ends: 1375 [2024-11-22 21:05:43,159 INFO L226 Difference]: Without dead ends: 1375 [2024-11-22 21:05:43,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=463, Unknown=1, NotChecked=44, Total=600 [2024-11-22 21:05:43,159 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 702 mSDsluCounter, 3728 mSDsCounter, 0 mSdLazyCounter, 3740 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 4231 SdHoareTripleChecker+Invalid, 3758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:43,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 4231 Invalid, 3758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3740 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-22 21:05:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-22 21:05:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1363. [2024-11-22 21:05:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1120 states have (on average 1.5276785714285714) internal successors, (1711), 1355 states have internal predecessors, (1711), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1721 transitions. [2024-11-22 21:05:43,171 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1721 transitions. Word has length 94 [2024-11-22 21:05:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:43,171 INFO L471 AbstractCegarLoop]: Abstraction has 1363 states and 1721 transitions. [2024-11-22 21:05:43,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 9.866666666666667) internal successors, (148), 18 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1721 transitions. [2024-11-22 21:05:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 21:05:43,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:43,172 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:43,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 21:05:43,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-22 21:05:43,372 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:43,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -523230140, now seen corresponding path program 1 times [2024-11-22 21:05:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799438018] [2024-11-22 21:05:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:43,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799438018] [2024-11-22 21:05:43,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799438018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:43,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:43,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 21:05:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515909517] [2024-11-22 21:05:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:43,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:05:43,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:43,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:05:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:05:43,729 INFO L87 Difference]: Start difference. First operand 1363 states and 1721 transitions. Second operand has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:44,602 INFO L93 Difference]: Finished difference Result 1382 states and 1746 transitions. [2024-11-22 21:05:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:05:44,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 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 96 [2024-11-22 21:05:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:44,604 INFO L225 Difference]: With dead ends: 1382 [2024-11-22 21:05:44,605 INFO L226 Difference]: Without dead ends: 1382 [2024-11-22 21:05:44,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:05:44,605 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 737 mSDsluCounter, 3391 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:44,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 3891 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 21:05:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2024-11-22 21:05:44,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1378. [2024-11-22 21:05:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1134 states have (on average 1.5238095238095237) internal successors, (1728), 1368 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:44,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1740 transitions. [2024-11-22 21:05:44,624 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1740 transitions. Word has length 96 [2024-11-22 21:05:44,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:44,624 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1740 transitions. [2024-11-22 21:05:44,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:44,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1740 transitions. [2024-11-22 21:05:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-22 21:05:44,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:44,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:44,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 21:05:44,625 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:44,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash -523230139, now seen corresponding path program 1 times [2024-11-22 21:05:44,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:44,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774224700] [2024-11-22 21:05:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:44,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:45,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:45,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:45,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774224700] [2024-11-22 21:05:45,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774224700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:45,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:45,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 21:05:45,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86237239] [2024-11-22 21:05:45,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:45,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 21:05:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:45,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 21:05:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 21:05:45,117 INFO L87 Difference]: Start difference. First operand 1378 states and 1740 transitions. Second operand has 11 states, 10 states have (on average 9.4) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:46,497 INFO L93 Difference]: Finished difference Result 1381 states and 1744 transitions. [2024-11-22 21:05:46,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 21:05:46,501 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.4) internal successors, (94), 11 states have internal predecessors, (94), 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 96 [2024-11-22 21:05:46,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:46,503 INFO L225 Difference]: With dead ends: 1381 [2024-11-22 21:05:46,503 INFO L226 Difference]: Without dead ends: 1381 [2024-11-22 21:05:46,504 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:05:46,504 INFO L432 NwaCegarLoop]: 504 mSDtfsCounter, 713 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3324 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 3822 SdHoareTripleChecker+Invalid, 3335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:46,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 3822 Invalid, 3335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3324 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 21:05:46,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2024-11-22 21:05:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1378. [2024-11-22 21:05:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1134 states have (on average 1.5220458553791887) internal successors, (1726), 1368 states have internal predecessors, (1726), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1738 transitions. [2024-11-22 21:05:46,524 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1738 transitions. Word has length 96 [2024-11-22 21:05:46,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:46,524 INFO L471 AbstractCegarLoop]: Abstraction has 1378 states and 1738 transitions. [2024-11-22 21:05:46,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.4) internal successors, (94), 11 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1738 transitions. [2024-11-22 21:05:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 21:05:46,525 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:46,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:46,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 21:05:46,525 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:46,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:46,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1605195655, now seen corresponding path program 1 times [2024-11-22 21:05:46,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:46,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852391221] [2024-11-22 21:05:46,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:46,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852391221] [2024-11-22 21:05:46,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852391221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:46,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208519578] [2024-11-22 21:05:46,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:46,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:46,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:46,939 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:46,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 21:05:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:47,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-22 21:05:47,115 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:47,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:47,222 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:05:47,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:05:47,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:05:47,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:05:47,434 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:47,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:47,510 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:47,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:47,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:05:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:47,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:05:47,561 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1044 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1044) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 21:05:47,565 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1044 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-22 21:05:47,587 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1047 (Array Int Int)) (v_ArrVal_1044 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1047))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1044)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 21:05:47,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208519578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:47,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:05:47,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-22 21:05:47,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656226996] [2024-11-22 21:05:47,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:05:47,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 21:05:47,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:47,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 21:05:47,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=395, Unknown=3, NotChecked=126, Total=600 [2024-11-22 21:05:47,590 INFO L87 Difference]: Start difference. First operand 1378 states and 1738 transitions. Second operand has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:49,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:49,378 INFO L93 Difference]: Finished difference Result 1380 states and 1742 transitions. [2024-11-22 21:05:49,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:05:49,379 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-22 21:05:49,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:49,381 INFO L225 Difference]: With dead ends: 1380 [2024-11-22 21:05:49,381 INFO L226 Difference]: Without dead ends: 1380 [2024-11-22 21:05:49,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=512, Unknown=3, NotChecked=144, Total=756 [2024-11-22 21:05:49,381 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 692 mSDsluCounter, 6794 mSDsCounter, 0 mSdLazyCounter, 4630 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 7293 SdHoareTripleChecker+Invalid, 4642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:49,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 7293 Invalid, 4642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4630 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 21:05:49,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2024-11-22 21:05:49,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1377. [2024-11-22 21:05:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1134 states have (on average 1.5202821869488536) internal successors, (1724), 1367 states have internal predecessors, (1724), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1736 transitions. [2024-11-22 21:05:49,394 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1736 transitions. Word has length 97 [2024-11-22 21:05:49,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:49,395 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 1736 transitions. [2024-11-22 21:05:49,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 8.105263157894736) internal successors, (154), 21 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1736 transitions. [2024-11-22 21:05:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-22 21:05:49,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:49,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:49,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 21:05:49,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:49,597 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:49,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:49,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1605195656, now seen corresponding path program 1 times [2024-11-22 21:05:49,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:49,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486268236] [2024-11-22 21:05:49,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:49,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:50,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:50,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486268236] [2024-11-22 21:05:50,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486268236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:50,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153744972] [2024-11-22 21:05:50,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:50,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:50,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:50,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:50,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 21:05:50,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:50,411 INFO L255 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 21:05:50,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:50,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:50,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:05:50,520 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 21:05:50,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 21:05:50,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:05:50,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 21:05:50,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:05:50,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:05:50,700 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:50,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:05:50,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:05:50,761 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:50,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:05:50,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:05:50,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:05:50,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:05:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:50,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:05:50,843 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1199 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4))) (forall ((v_ArrVal_1200 (Array Int Int)) (v_ArrVal_1199 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem56#1.base| v_ArrVal_1200) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 21:05:50,932 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_1206 (Array Int Int)) (v_ArrVal_1205 (Array Int Int)) (v_ArrVal_1199 (Array Int Int))) (<= 0 (+ 4 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1206) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1205) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1206 (Array Int Int)) (v_ArrVal_1205 (Array Int Int)) (v_ArrVal_1200 (Array Int Int)) (v_ArrVal_1199 (Array Int Int))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1205))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ 8 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1206) .cse1 v_ArrVal_1199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1200) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))) is different from false [2024-11-22 21:05:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153744972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:50,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:05:50,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2024-11-22 21:05:50,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831363558] [2024-11-22 21:05:50,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:05:50,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 21:05:50,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:50,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 21:05:50,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=424, Unknown=12, NotChecked=86, Total=600 [2024-11-22 21:05:50,935 INFO L87 Difference]: Start difference. First operand 1377 states and 1736 transitions. Second operand has 20 states, 17 states have (on average 9.058823529411764) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:52,542 INFO L93 Difference]: Finished difference Result 1379 states and 1740 transitions. [2024-11-22 21:05:52,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 21:05:52,543 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 9.058823529411764) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 97 [2024-11-22 21:05:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:52,545 INFO L225 Difference]: With dead ends: 1379 [2024-11-22 21:05:52,545 INFO L226 Difference]: Without dead ends: 1379 [2024-11-22 21:05:52,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=626, Unknown=13, NotChecked=106, Total=870 [2024-11-22 21:05:52,546 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 701 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 4468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:52,546 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 5066 Invalid, 4468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 4451 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 21:05:52,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1379 states. [2024-11-22 21:05:52,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1379 to 1361. [2024-11-22 21:05:52,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1120 states have (on average 1.5241071428571429) internal successors, (1707), 1353 states have internal predecessors, (1707), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:05:52,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1717 transitions. [2024-11-22 21:05:52,556 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1717 transitions. Word has length 97 [2024-11-22 21:05:52,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:52,557 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1717 transitions. [2024-11-22 21:05:52,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 9.058823529411764) internal successors, (154), 20 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:52,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1717 transitions. [2024-11-22 21:05:52,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 21:05:52,557 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:52,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:52,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-22 21:05:52,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-22 21:05:52,762 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:52,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1112141050, now seen corresponding path program 1 times [2024-11-22 21:05:52,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:52,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091262368] [2024-11-22 21:05:52,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:52,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:53,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:53,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091262368] [2024-11-22 21:05:53,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091262368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:53,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:53,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 21:05:53,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286529871] [2024-11-22 21:05:53,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:53,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 21:05:53,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:53,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 21:05:53,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-22 21:05:53,129 INFO L87 Difference]: Start difference. First operand 1361 states and 1717 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:53,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:53,931 INFO L93 Difference]: Finished difference Result 1386 states and 1748 transitions. [2024-11-22 21:05:53,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 21:05:53,932 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-22 21:05:53,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:53,934 INFO L225 Difference]: With dead ends: 1386 [2024-11-22 21:05:53,934 INFO L226 Difference]: Without dead ends: 1386 [2024-11-22 21:05:53,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-22 21:05:53,934 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 718 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 2481 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 3915 SdHoareTripleChecker+Invalid, 2493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:53,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 3915 Invalid, 2493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2481 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 21:05:53,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2024-11-22 21:05:53,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1382. [2024-11-22 21:05:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1140 states have (on average 1.5175438596491229) internal successors, (1730), 1372 states have internal predecessors, (1730), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1742 transitions. [2024-11-22 21:05:53,945 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1742 transitions. Word has length 99 [2024-11-22 21:05:53,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:53,945 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1742 transitions. [2024-11-22 21:05:53,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 14 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1742 transitions. [2024-11-22 21:05:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-22 21:05:53,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:53,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:53,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 21:05:53,947 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:53,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:53,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1112141049, now seen corresponding path program 1 times [2024-11-22 21:05:53,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:53,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472697299] [2024-11-22 21:05:53,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:54,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:54,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472697299] [2024-11-22 21:05:54,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472697299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:05:54,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:05:54,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 21:05:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007381123] [2024-11-22 21:05:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:05:54,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 21:05:54,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 21:05:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-22 21:05:54,436 INFO L87 Difference]: Start difference. First operand 1382 states and 1742 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:55,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:55,639 INFO L93 Difference]: Finished difference Result 1385 states and 1746 transitions. [2024-11-22 21:05:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 21:05:55,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2024-11-22 21:05:55,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:55,641 INFO L225 Difference]: With dead ends: 1385 [2024-11-22 21:05:55,641 INFO L226 Difference]: Without dead ends: 1385 [2024-11-22 21:05:55,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2024-11-22 21:05:55,642 INFO L432 NwaCegarLoop]: 503 mSDtfsCounter, 715 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 3314 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 3819 SdHoareTripleChecker+Invalid, 3325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:55,642 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 3819 Invalid, 3325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3314 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 21:05:55,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2024-11-22 21:05:55,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 1382. [2024-11-22 21:05:55,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1382 states, 1140 states have (on average 1.5157894736842106) internal successors, (1728), 1372 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1382 states to 1382 states and 1740 transitions. [2024-11-22 21:05:55,652 INFO L78 Accepts]: Start accepts. Automaton has 1382 states and 1740 transitions. Word has length 99 [2024-11-22 21:05:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:55,652 INFO L471 AbstractCegarLoop]: Abstraction has 1382 states and 1740 transitions. [2024-11-22 21:05:55,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 12 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:05:55,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1382 states and 1740 transitions. [2024-11-22 21:05:55,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-22 21:05:55,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:55,653 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:55,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 21:05:55,653 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:55,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash 218526947, now seen corresponding path program 1 times [2024-11-22 21:05:55,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:55,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922987511] [2024-11-22 21:05:55,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:55,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922987511] [2024-11-22 21:05:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922987511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463425491] [2024-11-22 21:05:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:56,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:56,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:56,068 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:56,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 21:05:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:56,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 21:05:56,250 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:56,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:56,332 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:05:56,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:05:56,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:05:56,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:05:56,502 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:56,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:56,566 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:56,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:56,610 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:05:56,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:05:56,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:05:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:56,642 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:05:56,649 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1512 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_1512) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 21:05:56,655 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1512 (Array Int Int))) (= (select |c_#valid| (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_1512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) 1)) is different from false [2024-11-22 21:05:56,687 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1512 (Array Int Int)) (v_ArrVal_1511 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1511))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1512)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 21:05:56,709 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1515 (Array Int Int)) (v_ArrVal_1512 (Array Int Int)) (v_ArrVal_1511 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_1515))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1511)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_1512)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 21:05:56,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463425491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:56,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:05:56,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2024-11-22 21:05:56,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656173314] [2024-11-22 21:05:56,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:05:56,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-22 21:05:56,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:05:56,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-22 21:05:56,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=506, Unknown=15, NotChecked=196, Total=812 [2024-11-22 21:05:56,712 INFO L87 Difference]: Start difference. First operand 1382 states and 1740 transitions. Second operand has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:58,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:05:58,462 INFO L93 Difference]: Finished difference Result 1384 states and 1744 transitions. [2024-11-22 21:05:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:05:58,462 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-22 21:05:58,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:05:58,464 INFO L225 Difference]: With dead ends: 1384 [2024-11-22 21:05:58,464 INFO L226 Difference]: Without dead ends: 1384 [2024-11-22 21:05:58,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=641, Unknown=15, NotChecked=220, Total=992 [2024-11-22 21:05:58,465 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 693 mSDsluCounter, 7253 mSDsCounter, 0 mSdLazyCounter, 4860 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 7751 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 4860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-22 21:05:58,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 7751 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 4860 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-22 21:05:58,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2024-11-22 21:05:58,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1381. [2024-11-22 21:05:58,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 1140 states have (on average 1.5140350877192983) internal successors, (1726), 1371 states have internal predecessors, (1726), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:05:58,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1738 transitions. [2024-11-22 21:05:58,484 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1738 transitions. Word has length 100 [2024-11-22 21:05:58,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:05:58,485 INFO L471 AbstractCegarLoop]: Abstraction has 1381 states and 1738 transitions. [2024-11-22 21:05:58,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.619047619047619) internal successors, (160), 23 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:05:58,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1738 transitions. [2024-11-22 21:05:58,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-22 21:05:58,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:05:58,486 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:05:58,494 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 21:05:58,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 21:05:58,686 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:05:58,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:05:58,687 INFO L85 PathProgramCache]: Analyzing trace with hash 218526948, now seen corresponding path program 1 times [2024-11-22 21:05:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:05:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906481688] [2024-11-22 21:05:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:05:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:05:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:05:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906481688] [2024-11-22 21:05:59,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906481688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:05:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892134502] [2024-11-22 21:05:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:05:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:05:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:05:59,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:05:59,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 21:05:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:05:59,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 21:05:59,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:05:59,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:05:59,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:05:59,633 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 21:05:59,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 21:05:59,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 21:05:59,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 21:05:59,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:05:59,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2024-11-22 21:05:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-22 21:05:59,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:05:59,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:05:59,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:05:59,860 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 21:05:59,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 51 [2024-11-22 21:05:59,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-22 21:06:00,025 INFO L349 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2024-11-22 21:06:00,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 78 treesize of output 61 [2024-11-22 21:06:00,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-11-22 21:06:00,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:06:00,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 21:06:00,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-22 21:06:00,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-22 21:06:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:00,087 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:06:04,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892134502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:04,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:06:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2024-11-22 21:06:04,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676078443] [2024-11-22 21:06:04,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:06:04,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 21:06:04,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 21:06:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=934, Unknown=1, NotChecked=0, Total=1056 [2024-11-22 21:06:04,891 INFO L87 Difference]: Start difference. First operand 1381 states and 1738 transitions. Second operand has 26 states, 23 states have (on average 8.26086956521739) internal successors, (190), 26 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:07,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:07,462 INFO L93 Difference]: Finished difference Result 1696 states and 2133 transitions. [2024-11-22 21:06:07,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 21:06:07,463 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 8.26086956521739) internal successors, (190), 26 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 100 [2024-11-22 21:06:07,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:07,465 INFO L225 Difference]: With dead ends: 1696 [2024-11-22 21:06:07,465 INFO L226 Difference]: Without dead ends: 1696 [2024-11-22 21:06:07,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=286, Invalid=1693, Unknown=1, NotChecked=0, Total=1980 [2024-11-22 21:06:07,466 INFO L432 NwaCegarLoop]: 516 mSDtfsCounter, 1552 mSDsluCounter, 6660 mSDsCounter, 0 mSdLazyCounter, 5376 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 5413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 5376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:07,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 7176 Invalid, 5413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 5376 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-22 21:06:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2024-11-22 21:06:07,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1359. [2024-11-22 21:06:07,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 1120 states have (on average 1.5205357142857143) internal successors, (1703), 1351 states have internal predecessors, (1703), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:06:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1713 transitions. [2024-11-22 21:06:07,480 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1713 transitions. Word has length 100 [2024-11-22 21:06:07,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:07,480 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1713 transitions. [2024-11-22 21:06:07,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 8.26086956521739) internal successors, (190), 26 states have internal predecessors, (190), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1713 transitions. [2024-11-22 21:06:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 21:06:07,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:07,481 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:07,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-22 21:06:07,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:07,683 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:07,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:07,683 INFO L85 PathProgramCache]: Analyzing trace with hash -415649749, now seen corresponding path program 1 times [2024-11-22 21:06:07,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:07,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103493663] [2024-11-22 21:06:07,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:07,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:07,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:08,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:08,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:08,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103493663] [2024-11-22 21:06:08,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103493663] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:06:08,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:06:08,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 21:06:08,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584266311] [2024-11-22 21:06:08,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:06:08,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 21:06:08,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:08,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 21:06:08,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-22 21:06:08,102 INFO L87 Difference]: Start difference. First operand 1359 states and 1713 transitions. Second operand has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:09,321 INFO L93 Difference]: Finished difference Result 1390 states and 1750 transitions. [2024-11-22 21:06:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:06:09,325 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-22 21:06:09,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:09,328 INFO L225 Difference]: With dead ends: 1390 [2024-11-22 21:06:09,328 INFO L226 Difference]: Without dead ends: 1390 [2024-11-22 21:06:09,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-22 21:06:09,328 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 737 mSDsluCounter, 5344 mSDsCounter, 0 mSdLazyCounter, 3682 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 5842 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:09,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 5842 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 3682 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 21:06:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1390 states. [2024-11-22 21:06:09,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1390 to 1386. [2024-11-22 21:06:09,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1146 states have (on average 1.5113438045375218) internal successors, (1732), 1376 states have internal predecessors, (1732), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:09,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1744 transitions. [2024-11-22 21:06:09,341 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1744 transitions. Word has length 102 [2024-11-22 21:06:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:09,341 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1744 transitions. [2024-11-22 21:06:09,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.142857142857143) internal successors, (100), 15 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1744 transitions. [2024-11-22 21:06:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-22 21:06:09,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:09,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:09,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 21:06:09,342 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:09,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:09,343 INFO L85 PathProgramCache]: Analyzing trace with hash -415649748, now seen corresponding path program 1 times [2024-11-22 21:06:09,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:09,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569192262] [2024-11-22 21:06:09,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:09,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:09,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569192262] [2024-11-22 21:06:09,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569192262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:06:09,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:06:09,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 21:06:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602319195] [2024-11-22 21:06:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:06:09,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 21:06:09,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 21:06:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-22 21:06:09,891 INFO L87 Difference]: Start difference. First operand 1386 states and 1744 transitions. Second operand has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:11,067 INFO L93 Difference]: Finished difference Result 1389 states and 1748 transitions. [2024-11-22 21:06:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 21:06:11,067 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2024-11-22 21:06:11,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:11,070 INFO L225 Difference]: With dead ends: 1389 [2024-11-22 21:06:11,070 INFO L226 Difference]: Without dead ends: 1389 [2024-11-22 21:06:11,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-22 21:06:11,071 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 733 mSDsluCounter, 3318 mSDsCounter, 0 mSdLazyCounter, 3282 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 3820 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:11,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 3820 Invalid, 3293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3282 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 21:06:11,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-22 21:06:11,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1386. [2024-11-22 21:06:11,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1146 states have (on average 1.5095986038394416) internal successors, (1730), 1376 states have internal predecessors, (1730), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:11,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1742 transitions. [2024-11-22 21:06:11,082 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1742 transitions. Word has length 102 [2024-11-22 21:06:11,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:11,082 INFO L471 AbstractCegarLoop]: Abstraction has 1386 states and 1742 transitions. [2024-11-22 21:06:11,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.333333333333334) internal successors, (100), 13 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:11,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1742 transitions. [2024-11-22 21:06:11,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 21:06:11,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:11,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:11,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 21:06:11,084 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:11,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1033493202, now seen corresponding path program 1 times [2024-11-22 21:06:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:11,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987206079] [2024-11-22 21:06:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:11,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:11,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987206079] [2024-11-22 21:06:11,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987206079] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:11,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501164315] [2024-11-22 21:06:11,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:11,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:11,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:06:11,547 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:06:11,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 21:06:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:11,720 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-22 21:06:11,723 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:06:11,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:06:11,790 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:06:11,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:06:11,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:06:11,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:06:11,959 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:11,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:12,014 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:12,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:12,049 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:12,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:12,088 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:12,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:12,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:06:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:12,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:06:12,121 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2018 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2018) |c_ULTIMATE.start_main_~user~0#1.base|) (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) 1)) is different from false [2024-11-22 21:06:12,144 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2018 (Array Int Int)) (v_ArrVal_2017 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2017))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2018)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 21:06:12,253 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2018 (Array Int Int)) (v_ArrVal_2017 (Array Int Int)) (v_ArrVal_2016 (Array Int Int)) (v_ArrVal_2021 (Array Int Int))) (= (select |c_#valid| (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2021))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2016)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2017)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2018)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) 1)) is different from false [2024-11-22 21:06:12,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501164315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:12,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:06:12,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 25 [2024-11-22 21:06:12,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908472802] [2024-11-22 21:06:12,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:06:12,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-22 21:06:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:12,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-22 21:06:12,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=702, Unknown=44, NotChecked=174, Total=1056 [2024-11-22 21:06:12,256 INFO L87 Difference]: Start difference. First operand 1386 states and 1742 transitions. Second operand has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:13,508 INFO L93 Difference]: Finished difference Result 1388 states and 1746 transitions. [2024-11-22 21:06:13,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:06:13,509 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-22 21:06:13,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:13,511 INFO L225 Difference]: With dead ends: 1388 [2024-11-22 21:06:13,511 INFO L226 Difference]: Without dead ends: 1388 [2024-11-22 21:06:13,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=864, Unknown=44, NotChecked=192, Total=1260 [2024-11-22 21:06:13,511 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 686 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 3432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 3445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:13,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 5372 Invalid, 3445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3432 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 21:06:13,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2024-11-22 21:06:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1385. [2024-11-22 21:06:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1146 states have (on average 1.5078534031413613) internal successors, (1728), 1375 states have internal predecessors, (1728), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1740 transitions. [2024-11-22 21:06:13,521 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1740 transitions. Word has length 103 [2024-11-22 21:06:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:13,522 INFO L471 AbstractCegarLoop]: Abstraction has 1385 states and 1740 transitions. [2024-11-22 21:06:13,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 7.217391304347826) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:13,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1740 transitions. [2024-11-22 21:06:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-22 21:06:13,522 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:13,522 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:13,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-22 21:06:13,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:13,723 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:13,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1033493201, now seen corresponding path program 1 times [2024-11-22 21:06:13,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:13,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078811427] [2024-11-22 21:06:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:13,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078811427] [2024-11-22 21:06:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078811427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370461504] [2024-11-22 21:06:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:14,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:14,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:06:14,418 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:06:14,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 21:06:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:14,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 527 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-22 21:06:14,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:06:14,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:06:14,715 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 21:06:14,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-22 21:06:14,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:06:14,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:06:14,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:06:14,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:06:14,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:06:14,891 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:14,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:06:14,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:14,953 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:14,954 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:06:14,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:15,011 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:15,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:06:15,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2024-11-22 21:06:15,090 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:15,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-22 21:06:15,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 22 [2024-11-22 21:06:15,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-22 21:06:15,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:06:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:15,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:06:15,191 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2203 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2203) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 20))) (forall ((v_ArrVal_2203 (Array Int Int)) (v_ArrVal_2202 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2203) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 24) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2202) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-22 21:06:15,646 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (forall ((v_ArrVal_2209 (Array Int Int)) (v_ArrVal_2208 (Array Int Int)) (v_ArrVal_2198 (Array Int Int))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2208))) (let ((.cse5 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse0 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2209) .cse5 v_ArrVal_2198))) (or (forall ((v_ArrVal_2203 (Array Int Int)) (v_ArrVal_2201 (Array Int Int)) (v_ArrVal_2200 (Array Int Int)) (v_ArrVal_2199 (Array Int Int))) (<= 0 (+ 20 (select (select (let ((.cse2 (store .cse4 .cse5 v_ArrVal_2199))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store .cse0 .cse1 v_ArrVal_2200) (select (select (store .cse2 .cse1 v_ArrVal_2201) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_2203))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (< (+ 4 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) 0)))))) (forall ((v_ArrVal_2209 (Array Int Int)) (v_ArrVal_2208 (Array Int Int)) (v_ArrVal_2198 (Array Int Int))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2208))) (let ((.cse12 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem54#1.base| v_ArrVal_2209) .cse12 v_ArrVal_2198))) (or (< (+ 4 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) 0) (forall ((v_ArrVal_2203 (Array Int Int)) (v_ArrVal_2202 (Array Int Int)) (v_ArrVal_2201 (Array Int Int)) (v_ArrVal_2200 (Array Int Int)) (v_ArrVal_2199 (Array Int Int))) (let ((.cse10 (store .cse11 .cse12 v_ArrVal_2199))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_2201))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (<= (+ (select (select (store (store .cse6 .cse7 v_ArrVal_2200) .cse8 v_ArrVal_2203) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) 24) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_2202) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))))))))))))))) is different from false [2024-11-22 21:06:15,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370461504] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:15,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:06:15,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2024-11-22 21:06:15,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427890829] [2024-11-22 21:06:15,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:06:15,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-22 21:06:15,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:15,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-22 21:06:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=833, Unknown=31, NotChecked=122, Total=1122 [2024-11-22 21:06:15,651 INFO L87 Difference]: Start difference. First operand 1385 states and 1740 transitions. Second operand has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:17,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:17,468 INFO L93 Difference]: Finished difference Result 1387 states and 1744 transitions. [2024-11-22 21:06:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 21:06:17,468 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 103 [2024-11-22 21:06:17,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:17,470 INFO L225 Difference]: With dead ends: 1387 [2024-11-22 21:06:17,470 INFO L226 Difference]: Without dead ends: 1387 [2024-11-22 21:06:17,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=1233, Unknown=32, NotChecked=150, Total=1640 [2024-11-22 21:06:17,471 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 699 mSDsluCounter, 4584 mSDsCounter, 0 mSdLazyCounter, 4464 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 4480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 4464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:17,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 5084 Invalid, 4480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 4464 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 21:06:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2024-11-22 21:06:17,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1357. [2024-11-22 21:06:17,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 1120 states have (on average 1.5169642857142858) internal successors, (1699), 1349 states have internal predecessors, (1699), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-22 21:06:17,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1709 transitions. [2024-11-22 21:06:17,498 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1709 transitions. Word has length 103 [2024-11-22 21:06:17,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:17,498 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1709 transitions. [2024-11-22 21:06:17,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.545454545454546) internal successors, (166), 25 states have internal predecessors, (166), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:17,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1709 transitions. [2024-11-22 21:06:17,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-22 21:06:17,499 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:17,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:17,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 21:06:17,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-22 21:06:17,705 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:17,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:17,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1450583085, now seen corresponding path program 1 times [2024-11-22 21:06:17,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:17,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055664389] [2024-11-22 21:06:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:18,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:18,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:18,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055664389] [2024-11-22 21:06:18,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055664389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:06:18,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:06:18,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 21:06:18,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145619934] [2024-11-22 21:06:18,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:06:18,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 21:06:18,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:18,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 21:06:18,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-22 21:06:18,205 INFO L87 Difference]: Start difference. First operand 1357 states and 1709 transitions. Second operand has 14 states, 13 states have (on average 8.0) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:19,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:19,083 INFO L93 Difference]: Finished difference Result 1396 states and 1754 transitions. [2024-11-22 21:06:19,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 21:06:19,083 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 14 states have internal predecessors, (104), 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 106 [2024-11-22 21:06:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:19,085 INFO L225 Difference]: With dead ends: 1396 [2024-11-22 21:06:19,085 INFO L226 Difference]: Without dead ends: 1396 [2024-11-22 21:06:19,085 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-22 21:06:19,085 INFO L432 NwaCegarLoop]: 500 mSDtfsCounter, 718 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 2492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 2505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:19,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 3901 Invalid, 2505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2492 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 21:06:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2024-11-22 21:06:19,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1392. [2024-11-22 21:06:19,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1154 states have (on average 1.5043327556325823) internal successors, (1736), 1382 states have internal predecessors, (1736), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1748 transitions. [2024-11-22 21:06:19,097 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1748 transitions. Word has length 106 [2024-11-22 21:06:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:19,098 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1748 transitions. [2024-11-22 21:06:19,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 8.0) internal successors, (104), 14 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1748 transitions. [2024-11-22 21:06:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-22 21:06:19,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:19,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:19,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-22 21:06:19,099 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:19,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1450583086, now seen corresponding path program 1 times [2024-11-22 21:06:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:19,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628066518] [2024-11-22 21:06:19,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:19,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:19,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:19,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628066518] [2024-11-22 21:06:19,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628066518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 21:06:19,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 21:06:19,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 21:06:19,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427435203] [2024-11-22 21:06:19,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 21:06:19,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 21:06:19,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 21:06:19,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2024-11-22 21:06:19,883 INFO L87 Difference]: Start difference. First operand 1392 states and 1748 transitions. Second operand has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:21,375 INFO L93 Difference]: Finished difference Result 1395 states and 1752 transitions. [2024-11-22 21:06:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 21:06:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 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 106 [2024-11-22 21:06:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:21,377 INFO L225 Difference]: With dead ends: 1395 [2024-11-22 21:06:21,377 INFO L226 Difference]: Without dead ends: 1395 [2024-11-22 21:06:21,378 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2024-11-22 21:06:21,378 INFO L432 NwaCegarLoop]: 498 mSDtfsCounter, 738 mSDsluCounter, 3713 mSDsCounter, 0 mSdLazyCounter, 3770 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 4211 SdHoareTripleChecker+Invalid, 3788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:21,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 4211 Invalid, 3788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3770 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 21:06:21,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-22 21:06:21,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1392. [2024-11-22 21:06:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1154 states have (on average 1.5025996533795494) internal successors, (1734), 1382 states have internal predecessors, (1734), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 1746 transitions. [2024-11-22 21:06:21,389 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 1746 transitions. Word has length 106 [2024-11-22 21:06:21,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:21,390 INFO L471 AbstractCegarLoop]: Abstraction has 1392 states and 1746 transitions. [2024-11-22 21:06:21,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.5) internal successors, (104), 17 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 21:06:21,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 1746 transitions. [2024-11-22 21:06:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 21:06:21,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:21,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:21,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-22 21:06:21,391 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:21,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash 747265968, now seen corresponding path program 1 times [2024-11-22 21:06:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:21,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090814469] [2024-11-22 21:06:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:21,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090814469] [2024-11-22 21:06:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090814469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758992265] [2024-11-22 21:06:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:06:21,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:06:21,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 21:06:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:22,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-22 21:06:22,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:06:22,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:06:22,227 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:06:22,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:06:22,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:06:22,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 21:06:22,389 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:22,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:22,447 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:22,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:22,485 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:22,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:22,528 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:22,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:22,568 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:22,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2024-11-22 21:06:22,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-22 21:06:22,622 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-22 21:06:22,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-22 21:06:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:22,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:06:23,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758992265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:23,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 21:06:23,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2024-11-22 21:06:23,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272790766] [2024-11-22 21:06:23,152 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 21:06:23,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-22 21:06:23,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 21:06:23,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-22 21:06:23,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1235, Unknown=52, NotChecked=0, Total=1482 [2024-11-22 21:06:23,154 INFO L87 Difference]: Start difference. First operand 1392 states and 1746 transitions. Second operand has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:24,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 21:06:24,450 INFO L93 Difference]: Finished difference Result 1394 states and 1750 transitions. [2024-11-22 21:06:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 21:06:24,450 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 107 [2024-11-22 21:06:24,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 21:06:24,452 INFO L225 Difference]: With dead ends: 1394 [2024-11-22 21:06:24,452 INFO L226 Difference]: Without dead ends: 1394 [2024-11-22 21:06:24,453 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=1448, Unknown=52, NotChecked=0, Total=1722 [2024-11-22 21:06:24,453 INFO L432 NwaCegarLoop]: 496 mSDtfsCounter, 682 mSDsluCounter, 4862 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 5358 SdHoareTripleChecker+Invalid, 3433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 21:06:24,453 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 5358 Invalid, 3433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3419 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 21:06:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2024-11-22 21:06:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1391. [2024-11-22 21:06:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1154 states have (on average 1.5008665511265165) internal successors, (1732), 1381 states have internal predecessors, (1732), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-22 21:06:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1744 transitions. [2024-11-22 21:06:24,466 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1744 transitions. Word has length 107 [2024-11-22 21:06:24,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 21:06:24,467 INFO L471 AbstractCegarLoop]: Abstraction has 1391 states and 1744 transitions. [2024-11-22 21:06:24,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 6.96) internal successors, (174), 27 states have internal predecessors, (174), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 21:06:24,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1744 transitions. [2024-11-22 21:06:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-22 21:06:24,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 21:06:24,468 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 21:06:24,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 21:06:24,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-22 21:06:24,669 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr97REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 417 more)] === [2024-11-22 21:06:24,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 21:06:24,670 INFO L85 PathProgramCache]: Analyzing trace with hash 747265969, now seen corresponding path program 1 times [2024-11-22 21:06:24,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 21:06:24,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406081671] [2024-11-22 21:06:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 21:06:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:25,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 21:06:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406081671] [2024-11-22 21:06:25,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406081671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 21:06:25,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088772873] [2024-11-22 21:06:25,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 21:06:25,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 21:06:25,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 21:06:25,642 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 21:06:25,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 21:06:25,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 21:06:25,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-22 21:06:25,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 21:06:25,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-22 21:06:25,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-22 21:06:25,945 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-22 21:06:25,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-22 21:06:25,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-22 21:06:25,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-22 21:06:26,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-22 21:06:26,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:06:26,202 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:26,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 21:06:26,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:26,280 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:26,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 21:06:26,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:26,357 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:26,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 21:06:26,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:26,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:26,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 21:06:26,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:26,487 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-22 21:06:26,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2024-11-22 21:06:26,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-22 21:06:26,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 18 [2024-11-22 21:06:26,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-22 21:06:26,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 21:06:26,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-22 21:06:26,550 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-22 21:06:26,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-22 21:06:26,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 21:06:26,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 21:06:26,772 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0))) (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2774) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2777) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 1)))) (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2776 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2778 Int)) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2775))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem58#1.base| v_ArrVal_2774) .cse1 v_ArrVal_2777) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2778) (select (select (store .cse2 .cse1 v_ArrVal_2776) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))))))) is different from false [2024-11-22 21:06:26,786 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (or (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2774) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2777) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2776 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2778 Int)) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_2775))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_2774) .cse2 v_ArrVal_2777) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2778) (select (select (store .cse3 .cse2 v_ArrVal_2776) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))))))))) is different from false [2024-11-22 21:06:26,816 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~user~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int)) (v_ArrVal_2773 (Array Int Int)) (v_ArrVal_2772 (Array Int Int))) (< 0 (+ (select (select (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2772))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2773) .cse0 v_ArrVal_2774) (select (select (store .cse1 .cse0 v_ArrVal_2775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_2777))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 1))) (forall ((|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)))) (forall ((v_ArrVal_2777 (Array Int Int)) (v_ArrVal_2776 (Array Int Int)) (v_ArrVal_2775 (Array Int Int)) (v_ArrVal_2774 (Array Int Int)) (v_ArrVal_2773 (Array Int Int)) (v_ArrVal_2772 (Array Int Int)) (|v_ULTIMATE.start_main_#t~malloc61#1.base_7| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc61#1.base_7|) 0)) (forall ((v_ArrVal_2778 Int)) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2772))) (let ((.cse3 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse5 (store .cse6 .cse3 v_ArrVal_2775))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (<= (+ (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem57#1.base| v_ArrVal_2773) .cse3 v_ArrVal_2774) .cse4 v_ArrVal_2777) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) 4) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc61#1.base_7| v_ArrVal_2778) (select (select (store .cse5 .cse4 v_ArrVal_2776) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))))) is different from false