./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:57:54,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:57:54,946 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-22 13:57:54,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:57:54,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:57:54,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:57:54,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:57:54,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:57:54,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:57:54,987 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:57:54,987 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:57:54,988 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:57:54,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:57:54,989 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:57:54,989 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:57:54,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:57:54,990 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:57:54,990 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:57:54,990 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:57:54,991 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:57:54,991 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:57:54,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:57:54,996 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:57:54,997 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:57:54,997 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:57:54,997 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:57:54,998 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:57:54,998 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:57:54,999 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:57:54,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:57:54,999 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:57:54,999 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:57:55,000 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:57:55,000 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:57:55,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:57:55,001 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:57:55,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:57:55,002 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:57:55,002 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:57:55,003 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d9c9690ebf4d597a96d56bea07230a5398e6c36b9eab0d2fba1dbd8091088b4 [2024-11-22 13:57:55,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:57:55,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:57:55,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:57:55,297 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:57:55,297 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:57:55,298 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2024-11-22 13:57:56,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:57:57,201 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:57:57,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i [2024-11-22 13:57:57,291 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a2a000c2/b1aabd1616f84ee8845e72a3a301d5f8/FLAG95ada7c2e [2024-11-22 13:57:57,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a2a000c2/b1aabd1616f84ee8845e72a3a301d5f8 [2024-11-22 13:57:57,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:57:57,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:57:57,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:57:57,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:57:57,340 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:57:57,341 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:57" (1/1) ... [2024-11-22 13:57:57,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d5e54f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:57, skipping insertion in model container [2024-11-22 13:57:57,344 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:57:57" (1/1) ... [2024-11-22 13:57:57,427 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:57:57,707 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2024-11-22 13:57:57,716 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2024-11-22 13:57:58,364 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,365 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,365 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,381 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,383 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,385 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,387 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,388 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,389 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,390 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,390 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,777 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,783 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:57:58,859 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:57:58,871 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4493,4506] [2024-11-22 13:57:58,871 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness_negated.i[4553,4566] [2024-11-22 13:57:58,915 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,915 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,916 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,916 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,917 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,923 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,924 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,925 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,925 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,926 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,926 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,927 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:58,927 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:59,003 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:59,065 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-22 13:57:59,076 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7737-7748] [2024-11-22 13:57:59,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:57:59,340 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:57:59,341 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59 WrapperNode [2024-11-22 13:57:59,341 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:57:59,342 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:57:59,343 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:57:59,343 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:57:59,352 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,438 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,520 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 656 [2024-11-22 13:57:59,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:57:59,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:57:59,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:57:59,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:57:59,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,545 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,633 INFO L175 MemorySlicer]: Split 313 memory accesses to 6 slices as follows [238, 2, 55, 6, 3, 9]. 76 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 2, 10, 0, 1, 5]. The 239 writes are split as follows [232, 0, 3, 2, 1, 1]. [2024-11-22 13:57:59,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,636 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,680 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,706 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:57:59,725 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:57:59,725 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:57:59,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:57:59,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (1/1) ... [2024-11-22 13:57:59,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:57:59,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:57:59,759 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 13:57:59,762 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 13:57:59,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 13:57:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-22 13:57:59,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-22 13:57:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-22 13:57:59,808 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-22 13:57:59,808 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-22 13:57:59,809 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-22 13:57:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-22 13:57:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-22 13:57:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-22 13:57:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-22 13:57:59,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-22 13:57:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-22 13:57:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 13:57:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 13:57:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 13:57:59,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 13:57:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 13:57:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-22 13:57:59,811 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-22 13:57:59,812 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-22 13:57:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 13:57:59,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 13:57:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 13:57:59,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-22 13:57:59,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-22 13:57:59,814 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-22 13:57:59,814 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-22 13:57:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:57:59,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:57:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-22 13:57:59,815 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-22 13:57:59,815 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-22 13:57:59,815 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-22 13:57:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-22 13:57:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-22 13:57:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-22 13:57:59,816 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-22 13:57:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-22 13:57:59,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-22 13:57:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-22 13:57:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-22 13:57:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-22 13:57:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-22 13:57:59,817 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-22 13:57:59,817 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-22 13:57:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-22 13:57:59,818 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-22 13:57:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 13:57:59,818 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 13:57:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-22 13:57:59,818 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-22 13:57:59,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 13:57:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 13:57:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 13:57:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 13:57:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-22 13:57:59,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-22 13:57:59,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-22 13:57:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-22 13:57:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-22 13:57:59,821 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-22 13:57:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-22 13:57:59,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-22 13:57:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 13:57:59,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 13:57:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 13:57:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 13:57:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 13:57:59,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-22 13:57:59,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 13:57:59,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-22 13:58:00,131 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:58:00,134 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:58:06,742 INFO L? ?]: Removed 126 outVars from TransFormulas that were not future-live. [2024-11-22 13:58:06,743 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:58:06,756 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:58:06,757 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 13:58:06,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:58:06 BoogieIcfgContainer [2024-11-22 13:58:06,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:58:06,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:58:06,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:58:06,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:58:06,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:57:57" (1/3) ... [2024-11-22 13:58:06,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bf617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:58:06, skipping insertion in model container [2024-11-22 13:58:06,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:57:59" (2/3) ... [2024-11-22 13:58:06,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42bf617f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:58:06, skipping insertion in model container [2024-11-22 13:58:06,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:58:06" (3/3) ... [2024-11-22 13:58:06,766 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness_negated.i [2024-11-22 13:58:06,781 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:58:06,781 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:58:06,842 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:58:06,850 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=LoopHeads, 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;@32fb02a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:58:06,851 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 13:58:06,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-22 13:58:06,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 13:58:06,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:58:06,873 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:06,873 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:58:06,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:06,879 INFO L85 PathProgramCache]: Analyzing trace with hash -357183169, now seen corresponding path program 1 times [2024-11-22 13:58:06,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:06,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951258291] [2024-11-22 13:58:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:06,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:12,325 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-22 13:58:12,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:12,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951258291] [2024-11-22 13:58:12,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951258291] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:58:12,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105709073] [2024-11-22 13:58:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:12,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:12,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:58:12,332 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 13:58:12,334 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 13:58:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:17,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 13:58:17,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:58:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2024-11-22 13:58:17,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:58:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105709073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:58:17,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:58:17,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 13:58:17,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146290489] [2024-11-22 13:58:17,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:58:17,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:58:17,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:17,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:58:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:58:17,788 INFO L87 Difference]: Start difference. First operand has 186 states, 112 states have (on average 1.2053571428571428) internal successors, (135), 113 states have internal predecessors, (135), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:58:17,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:58:17,838 INFO L93 Difference]: Finished difference Result 365 states and 518 transitions. [2024-11-22 13:58:17,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:58:17,841 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 129 [2024-11-22 13:58:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:58:17,849 INFO L225 Difference]: With dead ends: 365 [2024-11-22 13:58:17,849 INFO L226 Difference]: Without dead ends: 177 [2024-11-22 13:58:17,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:58:17,860 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:58:17,860 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:58:17,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-22 13:58:17,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-22 13:58:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 105 states have (on average 1.161904761904762) internal successors, (122), 106 states have internal predecessors, (122), 55 states have call successors, (55), 17 states have call predecessors, (55), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-22 13:58:17,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 230 transitions. [2024-11-22 13:58:17,911 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 230 transitions. Word has length 129 [2024-11-22 13:58:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:58:17,912 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 230 transitions. [2024-11-22 13:58:17,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-22 13:58:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 230 transitions. [2024-11-22 13:58:17,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-22 13:58:17,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:58:17,916 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:17,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 13:58:18,117 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,SelfDestructingSolverStorable0 [2024-11-22 13:58:18,117 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:58:18,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash -298153149, now seen corresponding path program 1 times [2024-11-22 13:58:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523147846] [2024-11-22 13:58:18,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:18,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:23,932 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2024-11-22 13:58:23,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523147846] [2024-11-22 13:58:23,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523147846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:58:23,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755804005] [2024-11-22 13:58:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:23,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:23,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:58:23,936 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 13:58:23,938 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 13:58:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:28,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 4262 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-22 13:58:29,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:58:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-22 13:58:29,645 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:58:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755804005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:58:29,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:58:29,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-22 13:58:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249292171] [2024-11-22 13:58:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:58:29,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:58:29,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:58:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:58:29,649 INFO L87 Difference]: Start difference. First operand 177 states and 230 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:58:32,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:58:32,023 INFO L93 Difference]: Finished difference Result 327 states and 431 transitions. [2024-11-22 13:58:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:58:32,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 129 [2024-11-22 13:58:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:58:32,029 INFO L225 Difference]: With dead ends: 327 [2024-11-22 13:58:32,029 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 13:58:32,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:58:32,031 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 242 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:58:32,032 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 658 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-22 13:58:32,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 13:58:32,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-22 13:58:32,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (58), 53 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-22 13:58:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 236 transitions. [2024-11-22 13:58:32,055 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 236 transitions. Word has length 129 [2024-11-22 13:58:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:58:32,056 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 236 transitions. [2024-11-22 13:58:32,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-22 13:58:32,056 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 236 transitions. [2024-11-22 13:58:32,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-22 13:58:32,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:58:32,059 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:32,076 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 13:58:32,260 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,SelfDestructingSolverStorable1 [2024-11-22 13:58:32,261 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:58:32,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:32,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1469361281, now seen corresponding path program 1 times [2024-11-22 13:58:32,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:32,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097038605] [2024-11-22 13:58:32,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:32,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:36,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:37,784 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2024-11-22 13:58:37,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097038605] [2024-11-22 13:58:37,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097038605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:58:37,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518049479] [2024-11-22 13:58:37,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:58:37,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:37,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:58:37,787 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 13:58:37,789 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 13:58:42,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:58:42,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 4516 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-22 13:58:42,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:58:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-22 13:58:43,702 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:58:43,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518049479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:58:43,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:58:43,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-22 13:58:43,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307223485] [2024-11-22 13:58:43,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:58:43,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:58:43,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:43,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:58:43,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:58:43,705 INFO L87 Difference]: Start difference. First operand 179 states and 236 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-22 13:58:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:58:46,450 INFO L93 Difference]: Finished difference Result 289 states and 381 transitions. [2024-11-22 13:58:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:58:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 159 [2024-11-22 13:58:46,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:58:46,454 INFO L225 Difference]: With dead ends: 289 [2024-11-22 13:58:46,454 INFO L226 Difference]: Without dead ends: 179 [2024-11-22 13:58:46,454 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:58:46,455 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 245 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:58:46,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 815 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-22 13:58:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-22 13:58:46,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-22 13:58:46,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 108 states have internal predecessors, (123), 55 states have call successors, (55), 17 states have call predecessors, (55), 17 states have return successors, (55), 53 states have call predecessors, (55), 53 states have call successors, (55) [2024-11-22 13:58:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 233 transitions. [2024-11-22 13:58:46,481 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 233 transitions. Word has length 159 [2024-11-22 13:58:46,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:58:46,482 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 233 transitions. [2024-11-22 13:58:46,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 4 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2024-11-22 13:58:46,483 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 233 transitions. [2024-11-22 13:58:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-22 13:58:46,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:58:46,485 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:58:46,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-22 13:58:46,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:58:46,686 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:58:46,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:46,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1115773871, now seen corresponding path program 2 times [2024-11-22 13:58:46,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:46,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630472387] [2024-11-22 13:58:46,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-22 13:58:46,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:50,588 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-22 13:58:50,589 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:58:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-22 13:58:53,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:58:53,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630472387] [2024-11-22 13:58:53,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630472387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:58:53,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:58:53,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:58:53,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544511224] [2024-11-22 13:58:53,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:58:53,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:58:53,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:58:53,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:58:53,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:58:53,148 INFO L87 Difference]: Start difference. First operand 179 states and 233 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-22 13:58:53,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:58:53,577 INFO L93 Difference]: Finished difference Result 187 states and 241 transitions. [2024-11-22 13:58:53,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:58:53,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 174 [2024-11-22 13:58:53,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:58:53,580 INFO L225 Difference]: With dead ends: 187 [2024-11-22 13:58:53,580 INFO L226 Difference]: Without dead ends: 185 [2024-11-22 13:58:53,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:58:53,581 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:58:53,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1121 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:58:53,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-22 13:58:53,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2024-11-22 13:58:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 111 states have internal predecessors, (126), 56 states have call successors, (56), 18 states have call predecessors, (56), 18 states have return successors, (56), 54 states have call predecessors, (56), 54 states have call successors, (56) [2024-11-22 13:58:53,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 238 transitions. [2024-11-22 13:58:53,596 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 238 transitions. Word has length 174 [2024-11-22 13:58:53,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:58:53,597 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 238 transitions. [2024-11-22 13:58:53,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2024-11-22 13:58:53,598 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 238 transitions. [2024-11-22 13:58:53,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-22 13:58:53,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:58:53,600 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:58:53,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:58:53,601 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:58:53,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:58:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1907272779, now seen corresponding path program 3 times [2024-11-22 13:58:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:58:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874963946] [2024-11-22 13:58:53,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:58:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:58:59,043 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-22 13:58:59,044 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-22 13:59:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 36 proven. 3 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2024-11-22 13:59:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:59:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874963946] [2024-11-22 13:59:01,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874963946] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:59:01,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175122505] [2024-11-22 13:59:01,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-22 13:59:01,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:59:01,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:59:01,850 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 13:59:01,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process