./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sll_to_dll_rev-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 26998269 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/heap-manipulation/sll_to_dll_rev-1.i ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sll_to_dll_rev-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-2699826-m [2024-08-14 14:28:54,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:28:55,024 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:28:55,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:28:55,028 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:28:55,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:28:55,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:28:55,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:28:55,053 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:28:55,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:28:55,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:28:55,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:28:55,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:28:55,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:28:55,058 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:28:55,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:28:55,058 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:28:55,060 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:28:55,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:28:55,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:28:55,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:28:55,061 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:28:55,061 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:28:55,062 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:28:55,062 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:28:55,063 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:28:55,063 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:28:55,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:28:55,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:28:55,063 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:28:55,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:28:55,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:28:55,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:28:55,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:28:55,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:28:55,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:28:55,280 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:28:55,280 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:28:55,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2024-08-14 14:28:56,451 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:28:56,625 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:28:56,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2024-08-14 14:28:56,639 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110b7549c/8bfcf28efe8e475fb87bd5a098dcef76/FLAGc1c870bf6 [2024-08-14 14:28:57,028 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/110b7549c/8bfcf28efe8e475fb87bd5a098dcef76 [2024-08-14 14:28:57,030 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:28:57,031 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:28:57,031 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sll_to_dll_rev-1.yml/witness.yml [2024-08-14 14:28:57,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:28:57,111 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:28:57,112 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:28:57,112 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:28:57,116 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:28:57,116 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:28:57" (1/2) ... [2024-08-14 14:28:57,117 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce2f59b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:28:57, skipping insertion in model container [2024-08-14 14:28:57,117 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:28:57" (1/2) ... [2024-08-14 14:28:57,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@311a8c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:28:57, skipping insertion in model container [2024-08-14 14:28:57,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:28:57" (2/2) ... [2024-08-14 14:28:57,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce2f59b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57, skipping insertion in model container [2024-08-14 14:28:57,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:28:57" (2/2) ... [2024-08-14 14:28:57,151 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:28:57,381 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2024-08-14 14:28:57,411 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:28:57,422 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:28:57,444 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i[22636,22649] [2024-08-14 14:28:57,458 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:28:57,483 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:28:57,483 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57 WrapperNode [2024-08-14 14:28:57,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:28:57,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:28:57,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:28:57,484 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:28:57,493 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,507 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,532 INFO L175 MemorySlicer]: Split 42 memory accesses to 5 slices as follows [2, 6, 8, 8, 18]. 43 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0, 0, 0]. The 10 writes are split as follows [0, 1, 1, 1, 7]. [2024-08-14 14:28:57,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,550 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,552 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:28:57,558 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:28:57,558 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:28:57,558 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:28:57,559 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (1/1) ... [2024-08-14 14:28:57,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:28:57,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:28:57,587 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) [2024-08-14 14:28:57,589 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 [2024-08-14 14:28:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:28:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:28:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2024-08-14 14:28:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:28:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:28:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2024-08-14 14:28:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2024-08-14 14:28:57,623 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2024-08-14 14:28:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2024-08-14 14:28:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2024-08-14 14:28:57,624 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2024-08-14 14:28:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2024-08-14 14:28:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2024-08-14 14:28:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2024-08-14 14:28:57,625 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure select [2024-08-14 14:28:57,626 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure random [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2024-08-14 14:28:57,627 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2024-08-14 14:28:57,628 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2024-08-14 14:28:57,629 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure free [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2024-08-14 14:28:57,632 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure system [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2024-08-14 14:28:57,633 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure div [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2024-08-14 14:28:57,634 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-08-14 14:28:57,635 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-08-14 14:28:57,636 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2024-08-14 14:28:57,637 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2024-08-14 14:28:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:28:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:28:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:28:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-14 14:28:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-08-14 14:28:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-08-14 14:28:57,819 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:28:57,821 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:28:57,855 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L77: havoc #t~nondet1; [2024-08-14 14:28:57,958 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L639: call ULTIMATE.dealloc(~#p1~0.base, ~#p1~0.offset);havoc ~#p1~0.base, ~#p1~0.offset;call ULTIMATE.dealloc(~#p2~0.base, ~#p2~0.offset);havoc ~#p2~0.base, ~#p2~0.offset; [2024-08-14 14:28:57,995 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: havoc #t~nondet2; [2024-08-14 14:28:58,032 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L599: havoc #t~mem11.base, #t~mem11.offset;call ULTIMATE.dealloc(~#list~0.base, ~#list~0.offset);havoc ~#list~0.base, ~#list~0.offset; [2024-08-14 14:28:58,100 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-08-14 14:28:58,100 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:28:58,109 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:28:58,109 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:28:58,109 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:28:58 BoogieIcfgContainer [2024-08-14 14:28:58,109 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:28:58,111 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:28:58,111 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:28:58,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:28:58,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:28:57" (1/4) ... [2024-08-14 14:28:58,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f91b3a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:28:58, skipping insertion in model container [2024-08-14 14:28:58,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:28:57" (2/4) ... [2024-08-14 14:28:58,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f91b3a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:28:58, skipping insertion in model container [2024-08-14 14:28:58,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:28:57" (3/4) ... [2024-08-14 14:28:58,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f91b3a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:28:58, skipping insertion in model container [2024-08-14 14:28:58,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:28:58" (4/4) ... [2024-08-14 14:28:58,118 INFO L119 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2024-08-14 14:28:58,118 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:28:58,133 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:28:58,133 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:28:58,161 INFO L92 WitnessUtils]: Constructing product of automaton with 140 states and violation witness of the following lengths: [25] [2024-08-14 14:28:58,166 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 140 states, 103 states have (on average 1.5048543689320388) internal successors, (155), 116 states have internal predecessors, (155), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-08-14 14:28:58,497 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 1207 states to 522 states. [2024-08-14 14:28:58,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:28:58,522 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;@37f0d6cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:28:58,522 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:28:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states. [2024-08-14 14:28:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-08-14 14:28:58,532 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:28:58,532 INFO L195 NwaCegarLoop]: trace histogram [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] [2024-08-14 14:28:58,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:28:58,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:28:58,538 INFO L85 PathProgramCache]: Analyzing trace with hash -108758075, now seen corresponding path program 1 times [2024-08-14 14:28:58,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:28:58,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024392114] [2024-08-14 14:28:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:28:58,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:28:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:28:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-14 14:28:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-08-14 14:28:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-08-14 14:28:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-08-14 14:28:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-08-14 14:28:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:28:59,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-08-14 14:28:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:28:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024392114] [2024-08-14 14:28:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024392114] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 14:28:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 14:28:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-08-14 14:28:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783127292] [2024-08-14 14:28:59,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 14:28:59,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-14 14:28:59,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:28:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-14 14:28:59,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-08-14 14:28:59,044 INFO L87 Difference]: Start difference. First operand 522 states. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-08-14 14:28:59,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:28:59,140 INFO L93 Difference]: Finished difference Result 106 states and 110 transitions. [2024-08-14 14:28:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 14:28:59,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-08-14 14:28:59,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:28:59,144 INFO L225 Difference]: With dead ends: 106 [2024-08-14 14:28:59,146 INFO L226 Difference]: Without dead ends: 102 [2024-08-14 14:28:59,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-08-14 14:28:59,151 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 69 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-14 14:28:59,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 64 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-14 14:28:59,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-08-14 14:28:59,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2024-08-14 14:28:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.087719298245614) internal successors, (62), 58 states have internal predecessors, (62), 11 states have call successors, (11), 11 states have call predecessors, (11), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-08-14 14:28:59,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-08-14 14:28:59,182 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 60 [2024-08-14 14:28:59,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:28:59,182 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-08-14 14:28:59,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-08-14 14:28:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-08-14 14:28:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-08-14 14:28:59,185 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:28:59,185 INFO L195 NwaCegarLoop]: trace histogram [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] [2024-08-14 14:28:59,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 14:28:59,186 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:28:59,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:28:59,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1062136998, now seen corresponding path program 1 times [2024-08-14 14:28:59,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:28:59,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74761302] [2024-08-14 14:28:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:28:59,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:28:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:28:59,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 14:28:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:28:59,334 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 14:28:59,335 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 14:28:59,336 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:28:59,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-14 14:28:59,339 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-14 14:28:59,342 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:28:59,366 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:28:59 BoogieIcfgContainer [2024-08-14 14:28:59,366 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:28:59,366 INFO L158 Benchmark]: Toolchain (without parser) took 2256.87ms. Allocated memory was 195.0MB in the beginning and 245.4MB in the end (delta: 50.3MB). Free memory was 163.8MB in the beginning and 149.2MB in the end (delta: 14.6MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2024-08-14 14:28:59,366 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:28:59,367 INFO L158 Benchmark]: Witness Parser took 0.11ms. Allocated memory is still 195.0MB. Free memory was 165.9MB in the beginning and 165.9MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:28:59,367 INFO L158 Benchmark]: CACSL2BoogieTranslator took 371.47ms. Allocated memory is still 195.0MB. Free memory was 163.8MB in the beginning and 143.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-08-14 14:28:59,367 INFO L158 Benchmark]: Boogie Preprocessor took 72.87ms. Allocated memory is still 195.0MB. Free memory was 143.8MB in the beginning and 138.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-08-14 14:28:59,367 INFO L158 Benchmark]: IcfgBuilder took 551.77ms. Allocated memory is still 195.0MB. Free memory was 138.6MB in the beginning and 101.9MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-08-14 14:28:59,368 INFO L158 Benchmark]: TraceAbstraction took 1255.12ms. Allocated memory was 195.0MB in the beginning and 245.4MB in the end (delta: 50.3MB). Free memory was 101.9MB in the beginning and 149.2MB in the end (delta: -47.2MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2024-08-14 14:28:59,373 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 134.2MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.11ms. Allocated memory is still 195.0MB. Free memory was 165.9MB in the beginning and 165.9MB in the end (delta: 18.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 371.47ms. Allocated memory is still 195.0MB. Free memory was 163.8MB in the beginning and 143.8MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.87ms. Allocated memory is still 195.0MB. Free memory was 143.8MB in the beginning and 138.6MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 551.77ms. Allocated memory is still 195.0MB. Free memory was 138.6MB in the beginning and 101.9MB in the end (delta: 36.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1255.12ms. Allocated memory was 195.0MB in the beginning and 245.4MB in the end (delta: 50.3MB). Free memory was 101.9MB in the beginning and 149.2MB in the end (delta: -47.2MB). Peak memory consumption was 3.1MB. 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: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L639] const struct node *p1, *p2; VAL [p1={5:0}, p2={6:0}] [L640] CALL, EXPR create_sll(&p1, &p2) VAL [\old(pp1)={5:0}, \old(pp2)={6:0}] [L588] struct node *list = ((void *)0); [L588] struct node *list = ((void *)0); VAL [\old(pp1)={5:0}, \old(pp2)={6:0}, list={3:0}, pp1={5:0}, pp2={6:0}] [L590] CALL chain_node(&list) VAL [\old(ppnode)={3:0}] [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-1:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; VAL [\result={-1:0}] [L582] RET, EXPR alloc_node() VAL [\old(ppnode)={3:0}, ppnode={3:0}] [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node VAL [\old(ppnode)={3:0}] [L590] RET chain_node(&list) VAL [\old(pp1)={5:0}, \old(pp2)={6:0}, list={3:0}, pp1={5:0}, pp2={6:0}] [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) VAL [\old(ppnode)={3:0}] [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-2:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; VAL [\result={-2:0}] [L582] RET, EXPR alloc_node() VAL [\old(ppnode)={3:0}, ppnode={3:0}] [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node VAL [\old(ppnode)={3:0}] [L597] RET chain_node(&list) VAL [\old(pp1)={5:0}, \old(pp2)={6:0}, list={3:0}] [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; VAL [\old(pp1)={5:0}, \old(pp2)={6:0}, \result={-2:0}] [L640] RET, EXPR create_sll(&p1, &p2) VAL [p1={5:0}, p2={6:0}] [L640] struct node *list = create_sll(&p1, &p2); [L641] COND FALSE !(0) VAL [list={-2:0}, p1={5:0}, p2={6:0}] [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) VAL [list={-2:0}, p1={5:0}, p2={6:0}] [L642] CALL check_seq_next(p1, p2) VAL [\old(beg)={-1:0}, \old(end)={-1:0}] [L626] COND FALSE !(!(beg)) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L626] COND FALSE !(0) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L627] COND FALSE !(!(end)) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L627] COND FALSE !(0) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={-1:0}, end={-1:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={0:0}, end={-1:0}] [L629] COND TRUE !(beg) VAL [\old(beg)={-1:0}, \old(end)={-1:0}, beg={0:0}, end={-1:0}] [L629] CALL fail() [L565] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 15 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 38 mSDtfsCounter, 37 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=522occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 10/10 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! [2024-08-14 14:28:59,399 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