./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/simple_and_skiplist_2lvl-1.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03fe66fa 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/simple_and_skiplist_2lvl-1.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-03fe66f-m [2024-08-15 18:25:39,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:25:39,688 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:25:39,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:25:39,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:25:39,732 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:25:39,733 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:25:39,733 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:25:39,734 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:25:39,735 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:25:39,735 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:25:39,735 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:25:39,736 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:25:39,738 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:25:39,738 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:25:39,738 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:25:39,738 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:25:39,739 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:25:39,739 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:25:39,739 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:25:39,739 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:25:39,743 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:25:39,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:25:39,744 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:25:39,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:25:39,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:25:39,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:25:39,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:25:39,745 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:25:39,745 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:25:39,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:25:39,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:25:39,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:25:39,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:25:39,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:25:39,746 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:25:39,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:25:39,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:25:39,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:25:39,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:25:40,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:25:40,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:25:40,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:25:40,015 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:25:40,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-08-15 18:25:41,362 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:25:41,584 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:25:41,585 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i [2024-08-15 18:25:41,606 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adb63c1a/7b5a8fb5fc37474eab7d71527477f5f0/FLAGaf5dcaa8a [2024-08-15 18:25:41,929 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2adb63c1a/7b5a8fb5fc37474eab7d71527477f5f0 [2024-08-15 18:25:41,932 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:25:41,932 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:25:41,933 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/simple_and_skiplist_2lvl-1.yml/witness.yml [2024-08-15 18:25:41,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:25:41,997 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:25:41,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:25:41,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:25:42,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:25:42,003 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:25:41" (1/2) ... [2024-08-15 18:25:42,004 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b00a196 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:25:42, skipping insertion in model container [2024-08-15 18:25:42,004 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:25:41" (1/2) ... [2024-08-15 18:25:42,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1cd30b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:25:42, skipping insertion in model container [2024-08-15 18:25:42,005 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:25:41" (2/2) ... [2024-08-15 18:25:42,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b00a196 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42, skipping insertion in model container [2024-08-15 18:25:42,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:25:41" (2/2) ... [2024-08-15 18:25:42,048 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:25:42,283 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-08-15 18:25:42,291 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:25:42,298 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:25:42,340 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/simple_and_skiplist_2lvl-1.i[24032,24045] [2024-08-15 18:25:42,344 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:25:42,370 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:25:42,371 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42 WrapperNode [2024-08-15 18:25:42,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:25:42,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:25:42,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:25:42,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:25:42,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,398 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,424 INFO L175 MemorySlicer]: Split 39 memory accesses to 4 slices as follows [2, 16, 13, 8]. 41 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 16 writes are split as follows [0, 8, 3, 5]. [2024-08-15 18:25:42,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,446 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:25:42,447 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:25:42,447 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:25:42,447 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:25:42,448 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (1/1) ... [2024-08-15 18:25:42,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:25:42,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:25:42,490 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-15 18:25:42,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-15 18:25:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:25:42,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:25:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:25:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2024-08-15 18:25:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2024-08-15 18:25:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_or_die [2024-08-15 18:25:42,541 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sl_with_head_and_tail [2024-08-15 18:25:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_random_insert [2024-08-15 18:25:42,542 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_sl [2024-08-15 18:25:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-08-15 18:25:42,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:25:42,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2024-08-15 18:25:42,567 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2024-08-15 18:25:42,568 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure select [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure random [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2024-08-15 18:25:42,569 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2024-08-15 18:25:42,570 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2024-08-15 18:25:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2024-08-15 18:25:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2024-08-15 18:25:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2024-08-15 18:25:42,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2024-08-15 18:25:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2024-08-15 18:25:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2024-08-15 18:25:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2024-08-15 18:25:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2024-08-15 18:25:42,579 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2024-08-15 18:25:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2024-08-15 18:25:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2024-08-15 18:25:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2024-08-15 18:25:42,580 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2024-08-15 18:25:42,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure free [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2024-08-15 18:25:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure system [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2024-08-15 18:25:42,590 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure div [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2024-08-15 18:25:42,591 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_or_die [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure create_sl_with_head_and_tail [2024-08-15 18:25:42,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-08-15 18:25:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-08-15 18:25:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-08-15 18:25:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-08-15 18:25:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-08-15 18:25:42,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-08-15 18:25:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-08-15 18:25:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-08-15 18:25:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure sl_random_insert [2024-08-15 18:25:42,595 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_sl [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-08-15 18:25:42,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:25:42,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:25:42,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-08-15 18:25:42,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-08-15 18:25:42,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:25:42,814 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:25:42,816 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:25:42,857 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-08-15 18:25:42,925 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L189: havoc #t~nondet1; [2024-08-15 18:25:43,047 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L194: havoc #t~nondet2; [2024-08-15 18:25:43,082 INFO L? ?]: Removed 41 outVars from TransFormulas that were not future-live. [2024-08-15 18:25:43,083 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:25:43,090 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:25:43,091 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:25:43,091 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:25:43 BoogieIcfgContainer [2024-08-15 18:25:43,091 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:25:43,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:25:43,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:25:43,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:25:43,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:25:41" (1/4) ... [2024-08-15 18:25:43,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8d6b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:25:43, skipping insertion in model container [2024-08-15 18:25:43,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:25:41" (2/4) ... [2024-08-15 18:25:43,097 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:25:43,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8d6b5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:25:43, skipping insertion in model container [2024-08-15 18:25:43,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:25:42" (3/4) ... [2024-08-15 18:25:43,099 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8d6b5b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:25:43, skipping insertion in model container [2024-08-15 18:25:43,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:25:43" (4/4) ... [2024-08-15 18:25:43,100 INFO L128 eAbstractionObserver]: Analyzing ICFG simple_and_skiplist_2lvl-1.i [2024-08-15 18:25:43,115 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:25:43,116 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:25:43,147 INFO L90 WitnessUtils]: Constructing product of automaton with 66 states and violation witness of the following lengths: [7] [2024-08-15 18:25:43,218 INFO L95 WitnessUtils]: Product has 257 reachable states. [2024-08-15 18:25:43,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:25:43,240 INFO L357 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, mHoare=false, 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;@392dd607, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:25:43,240 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:25:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 328 transitions. [2024-08-15 18:25:43,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-08-15 18:25:43,247 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:25:43,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:25:43,248 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:25:43,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:25:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash -733553757, now seen corresponding path program 1 times [2024-08-15 18:25:43,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:25:43,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504652155] [2024-08-15 18:25:43,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:25:43,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:25:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:25:43,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:25:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:25:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-08-15 18:25:43,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:25:43,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504652155] [2024-08-15 18:25:43,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504652155] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-15 18:25:43,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-15 18:25:43,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-08-15 18:25:43,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479911040] [2024-08-15 18:25:43,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-15 18:25:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-08-15 18:25:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:25:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-08-15 18:25:43,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-15 18:25:43,477 INFO L87 Difference]: Start difference. First operand 257 states and 328 transitions. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:25:43,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:25:43,486 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2024-08-15 18:25:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-08-15 18:25:43,489 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-08-15 18:25:43,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:25:43,499 INFO L225 Difference]: With dead ends: 123 [2024-08-15 18:25:43,499 INFO L226 Difference]: Without dead ends: 28 [2024-08-15 18:25:43,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-08-15 18:25:43,504 INFO L413 NwaCegarLoop]: 75 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, 75 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 [2024-08-15 18:25:43,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-08-15 18:25:43,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-08-15 18:25:43,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2024-08-15 18:25:43,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:25:43,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-08-15 18:25:43,547 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 21 [2024-08-15 18:25:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:25:43,547 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-08-15 18:25:43,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-08-15 18:25:43,548 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-08-15 18:25:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-08-15 18:25:43,548 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:25:43,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:25:43,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-15 18:25:43,548 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:25:43,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:25:43,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1809490817, now seen corresponding path program 1 times [2024-08-15 18:25:43,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:25:43,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519757496] [2024-08-15 18:25:43,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:25:43,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:25:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:25:43,668 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:25:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:25:43,722 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:25:43,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:25:43,728 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:25:43,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-15 18:25:43,736 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-15 18:25:43,739 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:25:43,759 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:25:43 BoogieIcfgContainer [2024-08-15 18:25:43,759 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:25:43,760 INFO L158 Benchmark]: Toolchain (without parser) took 1762.68ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 78.2MB in the beginning and 147.1MB in the end (delta: -69.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:25:43,760 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:25:43,762 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 151.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:25:43,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.83ms. Allocated memory is still 151.0MB. Free memory was 78.2MB in the beginning and 58.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-08-15 18:25:43,762 INFO L158 Benchmark]: Boogie Preprocessor took 74.49ms. Allocated memory is still 151.0MB. Free memory was 58.9MB in the beginning and 54.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-08-15 18:25:43,762 INFO L158 Benchmark]: IcfgBuilder took 644.30ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 54.4MB in the beginning and 135.7MB in the end (delta: -81.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2024-08-15 18:25:43,763 INFO L158 Benchmark]: TraceAbstraction took 665.99ms. Allocated memory is still 195.0MB. Free memory was 135.7MB in the beginning and 147.1MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:25:43,764 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 151.0MB. Free memory is still 117.9MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.10ms. Allocated memory is still 151.0MB. Free memory is still 80.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.83ms. Allocated memory is still 151.0MB. Free memory was 78.2MB in the beginning and 58.9MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.49ms. Allocated memory is still 151.0MB. Free memory was 58.9MB in the beginning and 54.4MB in the end (delta: 4.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 644.30ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 54.4MB in the beginning and 135.7MB in the end (delta: -81.4MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. * TraceAbstraction took 665.99ms. Allocated memory is still 195.0MB. Free memory was 135.7MB in the beginning and 147.1MB in the end (delta: -11.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 613]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L596] List a = (List) malloc(sizeof(struct node)); [L597] COND FALSE !(a == 0) VAL [a={-1:0}] [L598] List t; [L599] List p = a; [L600] a->h = 2 VAL [a={-1:0}, p={-1:0}] [L601] COND TRUE __VERIFIER_nondet_int() [L602] p->h = 1 [L603] t = (List) malloc(sizeof(struct node)) [L604] COND FALSE !(t == 0) VAL [a={-1:0}, p={-1:0}, t={-2:0}] [L605] p->n = t [L606] EXPR p->n [L606] p = p->n [L601] COND FALSE !(__VERIFIER_nondet_int()) [L608] p->h = 2 [L609] p->n = 0 [L610] p = a VAL [p={-1:0}] [L611] COND TRUE p!=0 VAL [p={-1:0}] [L612] EXPR p->h VAL [p={-1:0}] [L612] COND TRUE p->h != 2 [L613] reach_error() VAL [p={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 75 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-08-15 18:25:43,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE