./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 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/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-03fe66f-m [2024-08-15 18:24:09,507 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:24:09,577 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:24:09,582 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:24:09,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:24:09,613 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:24:09,614 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:24:09,614 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:24:09,615 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:24:09,615 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:24:09,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:24:09,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:24:09,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:24:09,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:24:09,620 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:24:09,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:24:09,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:24:09,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:24:09,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:24:09,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:24:09,623 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:24:09,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:24:09,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:24:09,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:24:09,624 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:24:09,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:24:09,625 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:24:09,625 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:24:09,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:24:09,626 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:24:09,626 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:24:09,626 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:24:09,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:24:09,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:24:09,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:24:09,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:24:09,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:24:09,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:24:09,628 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:24:09,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:24:09,629 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:24:09,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:24:09,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:24:09,633 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:24:09,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:24:09,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:24:09,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:24:09,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:24:09,909 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:24:09,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2024-08-15 18:24:11,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:24:11,674 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:24:11,675 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/sll_to_dll_rev-1.i [2024-08-15 18:24:11,688 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e59b94452/2b7a0bd0393f47a29550444bd00ce125/FLAG7c870fd7a [2024-08-15 18:24:11,702 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e59b94452/2b7a0bd0393f47a29550444bd00ce125 [2024-08-15 18:24:11,705 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:24:11,708 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:24:11,709 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/sll_to_dll_rev-1.yml/witness.yml [2024-08-15 18:24:11,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:24:11,813 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:24:11,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:11,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:24:11,820 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:24:11,821 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:11" (1/2) ... [2024-08-15 18:24:11,822 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c31039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:11, skipping insertion in model container [2024-08-15 18:24:11,822 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:24:11" (1/2) ... [2024-08-15 18:24:11,824 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@236f6d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:24:11, skipping insertion in model container [2024-08-15 18:24:11,824 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:11" (2/2) ... [2024-08-15 18:24:11,825 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73c31039 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:11, skipping insertion in model container [2024-08-15 18:24:11,825 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:11" (2/2) ... [2024-08-15 18:24:11,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:24:12,191 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] [2024-08-15 18:24:12,238 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:12,253 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:24:12,296 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] [2024-08-15 18:24:12,319 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:24:12,346 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:24:12,347 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:24:12 WrapperNode [2024-08-15 18:24:12,347 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:24:12,348 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:24:12,348 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:24:12,348 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:24:12,360 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,361 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,378 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,432 INFO L175 MemorySlicer]: Split 42 memory accesses to 5 slices as follows [2, 18, 6, 8, 8]. 43 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1, 0, 0]. The 10 writes are split as follows [0, 7, 1, 1, 1]. [2024-08-15 18:24:12,432 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,433 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,450 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,458 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,461 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:24:12,479 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:24:12,479 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:24:12,479 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:24:12,480 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 06:24:12" (1/1) ... [2024-08-15 18:24:12,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:24:12,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:24:12,519 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 18:24:12,526 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 18:24:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:24:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:24:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:24:12,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2024-08-15 18:24:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2024-08-15 18:24:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2024-08-15 18:24:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2024-08-15 18:24:12,574 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2024-08-15 18:24:12,575 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sll [2024-08-15 18:24:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure init_back_link [2024-08-15 18:24:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reverse_dll [2024-08-15 18:24:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_fw_link [2024-08-15 18:24:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2024-08-15 18:24:12,576 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2024-08-15 18:24:12,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:24:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:24:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:24:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2024-08-15 18:24:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2024-08-15 18:24:12,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:24:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:24:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2024-08-15 18:24:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2024-08-15 18:24:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2024-08-15 18:24:12,578 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2024-08-15 18:24:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2024-08-15 18:24:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2024-08-15 18:24:12,579 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2024-08-15 18:24:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2024-08-15 18:24:12,580 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2024-08-15 18:24:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2024-08-15 18:24:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2024-08-15 18:24:12,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure select [2024-08-15 18:24:12,582 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure random [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2024-08-15 18:24:12,583 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2024-08-15 18:24:12,584 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2024-08-15 18:24:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2024-08-15 18:24:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2024-08-15 18:24:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2024-08-15 18:24:12,587 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2024-08-15 18:24:12,588 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2024-08-15 18:24:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:24:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2024-08-15 18:24:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure free [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2024-08-15 18:24:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2024-08-15 18:24:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2024-08-15 18:24:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2024-08-15 18:24:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2024-08-15 18:24:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2024-08-15 18:24:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2024-08-15 18:24:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2024-08-15 18:24:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2024-08-15 18:24:12,592 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure system [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2024-08-15 18:24:12,593 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure div [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2024-08-15 18:24:12,594 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2024-08-15 18:24:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2024-08-15 18:24:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2024-08-15 18:24:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2024-08-15 18:24:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2024-08-15 18:24:12,595 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2024-08-15 18:24:12,596 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-08-15 18:24:12,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure create_sll [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-08-15 18:24:12,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure init_back_link [2024-08-15 18:24:12,599 INFO L130 BoogieDeclarations]: Found specification of procedure reverse_dll [2024-08-15 18:24:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure remove_fw_link [2024-08-15 18:24:12,600 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2024-08-15 18:24:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2024-08-15 18:24:12,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:24:12,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:24:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:24:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:24:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-08-15 18:24:12,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-08-15 18:24:12,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-08-15 18:24:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-08-15 18:24:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:24:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:24:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-08-15 18:24:12,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-08-15 18:24:12,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-08-15 18:24:12,883 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:24:12,886 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:24:12,946 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L77: havoc #t~nondet1; [2024-08-15 18:24:13,110 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; [2024-08-15 18:24:13,170 INFO L1266 $ProcedureCfgBuilder]: dead code at ProgramPoint L82: havoc #t~nondet2; [2024-08-15 18:24:13,204 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; [2024-08-15 18:24:13,301 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-08-15 18:24:13,301 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:24:13,314 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:24:13,315 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:24:13,316 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:13 BoogieIcfgContainer [2024-08-15 18:24:13,316 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:24:13,319 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:24:13,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:24:13,323 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:24:13,323 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:24:11" (1/4) ... [2024-08-15 18:24:13,324 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77706120 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:24:13, skipping insertion in model container [2024-08-15 18:24:13,324 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:24:11" (2/4) ... [2024-08-15 18:24:13,325 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:24:13,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77706120 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:24:13, skipping insertion in model container [2024-08-15 18:24:13,327 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 06:24:12" (3/4) ... [2024-08-15 18:24:13,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77706120 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:24:13, skipping insertion in model container [2024-08-15 18:24:13,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:24:13" (4/4) ... [2024-08-15 18:24:13,329 INFO L128 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2024-08-15 18:24:13,354 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:24:13,354 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:24:13,393 INFO L90 WitnessUtils]: Constructing product of automaton with 140 states and violation witness of the following lengths: [25] [2024-08-15 18:24:13,846 INFO L95 WitnessUtils]: Product has 1207 reachable states. [2024-08-15 18:24:13,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:24:13,912 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;@d732fac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:24:13,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:24:13,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1807 transitions. [2024-08-15 18:24:13,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-08-15 18:24:13,934 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:13,935 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] [2024-08-15 18:24:13,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:13,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -108758075, now seen corresponding path program 1 times [2024-08-15 18:24:13,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:13,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604650856] [2024-08-15 18:24:13,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:24:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-08-15 18:24:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-08-15 18:24:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-08-15 18:24:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-08-15 18:24:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-08-15 18:24:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:24:14,606 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-08-15 18:24:14,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:24:14,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604650856] [2024-08-15 18:24:14,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604650856] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-15 18:24:14,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-15 18:24:14,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-08-15 18:24:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818037308] [2024-08-15 18:24:14,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-15 18:24:14,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-08-15 18:24:14,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:24:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-08-15 18:24:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-08-15 18:24:14,651 INFO L87 Difference]: Start difference. First operand 1207 states and 1807 transitions. 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) [2024-08-15 18:24:14,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:24:14,789 INFO L93 Difference]: Finished difference Result 108 states and 112 transitions. [2024-08-15 18:24:14,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-15 18:24:14,793 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 [2024-08-15 18:24:14,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:24:14,801 INFO L225 Difference]: With dead ends: 108 [2024-08-15 18:24:14,802 INFO L226 Difference]: Without dead ends: 102 [2024-08-15 18:24:14,803 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 [2024-08-15 18:24:14,809 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 [2024-08-15 18:24:14,810 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] [2024-08-15 18:24:14,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-08-15 18:24:14,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2024-08-15 18:24:14,855 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) [2024-08-15 18:24:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2024-08-15 18:24:14,859 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 60 [2024-08-15 18:24:14,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:24:14,861 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2024-08-15 18:24:14,861 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) [2024-08-15 18:24:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2024-08-15 18:24:14,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-08-15 18:24:14,863 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:24:14,864 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] [2024-08-15 18:24:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-15 18:24:14,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:24:14,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:24:14,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1062136998, now seen corresponding path program 1 times [2024-08-15 18:24:14,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:24:14,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051227082] [2024-08-15 18:24:14,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:24:14,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:24:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:14,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:24:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:24:15,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:24:15,067 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:24:15,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:24:15,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-08-15 18:24:15,076 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-15 18:24:15,080 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:24:15,118 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:24:15 BoogieIcfgContainer [2024-08-15 18:24:15,118 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:24:15,119 INFO L158 Benchmark]: Toolchain (without parser) took 3306.48ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 98.8MB in the beginning and 71.3MB in the end (delta: 27.5MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2024-08-15 18:24:15,120 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:15,120 INFO L158 Benchmark]: Witness Parser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:24:15,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 533.72ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 118.0MB in the end (delta: -19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-08-15 18:24:15,121 INFO L158 Benchmark]: Boogie Preprocessor took 129.86ms. Allocated memory is still 167.8MB. Free memory was 118.0MB in the beginning and 112.6MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-08-15 18:24:15,122 INFO L158 Benchmark]: IcfgBuilder took 837.20ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-08-15 18:24:15,122 INFO L158 Benchmark]: TraceAbstraction took 1799.05ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 76.3MB in the beginning and 71.3MB in the end (delta: 4.9MB). Peak memory consumption was 47.6MB. Max. memory is 16.1GB. [2024-08-15 18:24:15,124 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 100.7MB. Free memory is still 47.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.13ms. Allocated memory is still 167.8MB. Free memory is still 101.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 533.72ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 118.0MB in the end (delta: -19.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 129.86ms. Allocated memory is still 167.8MB. Free memory was 118.0MB in the beginning and 112.6MB in the end (delta: 5.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * IcfgBuilder took 837.20ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 77.0MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1799.05ms. Allocated memory was 167.8MB in the beginning and 211.8MB in the end (delta: 44.0MB). Free memory was 76.3MB in the beginning and 71.3MB in the end (delta: 4.9MB). Peak memory consumption was 47.6MB. 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: 1.7s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, 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=1207occurred 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, 0.4s 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! [2024-08-15 18:24:15,162 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