/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-04 20:48:03,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-04 20:48:03,555 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-11-04 20:48:03,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-04 20:48:03,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-04 20:48:03,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-04 20:48:03,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-04 20:48:03,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-04 20:48:03,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-04 20:48:03,591 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-04 20:48:03,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-04 20:48:03,591 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-04 20:48:03,592 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-04 20:48:03,592 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-04 20:48:03,592 INFO L153 SettingsManager]: * Use SBE=true [2024-11-04 20:48:03,592 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-04 20:48:03,592 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-04 20:48:03,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-04 20:48:03,593 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-04 20:48:03,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-04 20:48:03,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-04 20:48:03,595 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-04 20:48:03,596 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-04 20:48:03,596 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-04 20:48:03,596 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-04 20:48:03,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-04 20:48:03,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:48:03,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-04 20:48:03,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-04 20:48:03,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-04 20:48:03,598 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:03,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-04 20:48:03,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-04 20:48:03,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-04 20:48:03,838 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-04 20:48:03,838 INFO L274 PluginConnector]: CDTParser initialized [2024-11-04 20:48:03,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i [2024-11-04 20:48:05,388 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-04 20:48:05,737 INFO L384 CDTParser]: Found 1 translation units. [2024-11-04 20:48:05,738 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i [2024-11-04 20:48:05,765 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c90f73e1/8f860f9ab77e4397bce4db4a22bbd7a6/FLAG3bd64574b [2024-11-04 20:48:05,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c90f73e1/8f860f9ab77e4397bce4db4a22bbd7a6 [2024-11-04 20:48:05,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-04 20:48:05,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-04 20:48:05,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-04 20:48:05,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-04 20:48:05,949 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-04 20:48:05,949 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:48:05" (1/1) ... [2024-11-04 20:48:05,950 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38f899c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:05, skipping insertion in model container [2024-11-04 20:48:05,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 08:48:05" (1/1) ... [2024-11-04 20:48:06,068 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:48:06,274 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2024-11-04 20:48:06,281 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2024-11-04 20:48:06,664 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,723 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,724 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,725 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,739 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,742 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,743 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,744 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,745 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,745 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,746 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,748 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,749 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,753 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,753 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,762 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,763 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,765 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,765 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,768 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,768 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,768 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,769 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,770 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,773 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,773 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,773 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,773 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,774 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:06,983 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,984 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,984 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:06,985 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,084 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,099 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:48:07,126 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-04 20:48:07,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-04 20:48:07,153 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2024-11-04 20:48:07,154 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2024-11-04 20:48:07,169 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,183 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,183 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,183 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,187 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,187 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,188 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,188 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,188 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,188 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,189 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,190 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,190 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,191 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,191 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,194 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,194 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,195 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,195 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,195 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,196 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,196 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,196 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,197 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,197 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,198 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,198 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,263 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,268 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,269 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,271 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,302 WARN L1070 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-04 20:48:07,309 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:48:07,315 INFO L200 MainTranslator]: Completed pre-run [2024-11-04 20:48:07,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4494,4507] [2024-11-04 20:48:07,331 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_prev_harness_negated.i[4554,4567] [2024-11-04 20:48:07,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,366 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,367 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,373 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,374 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,376 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,376 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,377 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,378 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,378 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,378 WARN L1674 CHandler]: Possible shadowing of function index [2024-11-04 20:48:07,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-04 20:48:07,569 WARN L710 CHandler]: The following functions are not defined or handled internally: aws_array_list_ensure_capacity [2024-11-04 20:48:07,578 INFO L204 MainTranslator]: Completed translation [2024-11-04 20:48:07,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07 WrapperNode [2024-11-04 20:48:07,579 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-04 20:48:07,579 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-04 20:48:07,579 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-04 20:48:07,579 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-04 20:48:07,584 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,675 INFO L138 Inliner]: procedures = 687, calls = 1039, calls flagged for inlining = 50, calls inlined = 4, statements flattened = 57 [2024-11-04 20:48:07,676 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-04 20:48:07,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-04 20:48:07,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-04 20:48:07,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-04 20:48:07,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,683 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,689 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,704 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 6, 5, 4]. 35 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5, 0]. The 2 writes are split as follows [0, 1, 0, 1]. [2024-11-04 20:48:07,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,704 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,729 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,738 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-04 20:48:07,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-04 20:48:07,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-04 20:48:07,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-04 20:48:07,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (1/1) ... [2024-11-04 20:48:07,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-04 20:48:07,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-04 20:48:07,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-04 20:48:07,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-04 20:48:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:48:07,785 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-04 20:48:07,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-04 20:48:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-04 20:48:07,786 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-04 20:48:07,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-04 20:48:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-04 20:48:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-04 20:48:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-04 20:48:07,787 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-04 20:48:07,787 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-04 20:48:07,961 INFO L238 CfgBuilder]: Building ICFG [2024-11-04 20:48:07,963 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-04 20:48:08,134 INFO L? ?]: Removed 31 outVars from TransFormulas that were not future-live. [2024-11-04 20:48:08,134 INFO L287 CfgBuilder]: Performing block encoding [2024-11-04 20:48:08,143 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-04 20:48:08,143 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-04 20:48:08,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:48:08 BoogieIcfgContainer [2024-11-04 20:48:08,143 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-04 20:48:08,144 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-04 20:48:08,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-04 20:48:08,147 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-04 20:48:08,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 08:48:05" (1/3) ... [2024-11-04 20:48:08,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf3bdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:48:08, skipping insertion in model container [2024-11-04 20:48:08,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 08:48:07" (2/3) ... [2024-11-04 20:48:08,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bf3bdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 08:48:08, skipping insertion in model container [2024-11-04 20:48:08,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 08:48:08" (3/3) ... [2024-11-04 20:48:08,148 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_prev_harness_negated.i [2024-11-04 20:48:08,160 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-04 20:48:08,160 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-04 20:48:08,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-04 20:48:08,201 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@792df861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-04 20:48:08,201 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-04 20:48:08,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-04 20:48:08,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-04 20:48:08,209 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:48:08,209 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:48:08,210 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:48:08,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:48:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash 690008246, now seen corresponding path program 1 times [2024-11-04 20:48:08,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:48:08,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747066174] [2024-11-04 20:48:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:48:08,221 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:08,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:48:08,223 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:48:08,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-04 20:48:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-04 20:48:08,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-04 20:48:08,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-04 20:48:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-04 20:48:08,422 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-04 20:48:08,465 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-04 20:48:08,465 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-04 20:48:08,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747066174] [2024-11-04 20:48:08,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1747066174] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-04 20:48:08,466 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-04 20:48:08,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-04 20:48:08,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713747831] [2024-11-04 20:48:08,470 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-04 20:48:08,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-04 20:48:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-04 20:48:08,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-04 20:48:08,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:48:08,496 INFO L87 Difference]: Start difference. First operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 20:48:08,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-04 20:48:08,515 INFO L93 Difference]: Finished difference Result 94 states and 124 transitions. [2024-11-04 20:48:08,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-04 20:48:08,522 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-04 20:48:08,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-04 20:48:08,527 INFO L225 Difference]: With dead ends: 94 [2024-11-04 20:48:08,527 INFO L226 Difference]: Without dead ends: 45 [2024-11-04 20:48:08,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-04 20:48:08,532 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-04 20:48:08,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-04 20:48:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-04 20:48:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-04 20:48:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-04 20:48:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2024-11-04 20:48:08,564 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 28 [2024-11-04 20:48:08,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-04 20:48:08,565 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2024-11-04 20:48:08,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-04 20:48:08,565 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2024-11-04 20:48:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-04 20:48:08,566 INFO L207 NwaCegarLoop]: Found error trace [2024-11-04 20:48:08,566 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-04 20:48:08,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-04 20:48:08,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:08,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-04 20:48:08,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-04 20:48:08,770 INFO L85 PathProgramCache]: Analyzing trace with hash -331060108, now seen corresponding path program 1 times [2024-11-04 20:48:08,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-04 20:48:08,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152064243] [2024-11-04 20:48:08,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-04 20:48:08,770 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:08,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-04 20:48:08,773 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-04 20:48:08,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-04 20:48:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-04 20:48:09,133 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-04 20:48:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-04 20:48:09,365 INFO L130 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2024-11-04 20:48:09,365 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-04 20:48:09,366 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-04 20:48:09,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-04 20:48:09,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-04 20:48:09,570 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-04 20:48:09,597 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-04 20:48:09,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.11 08:48:09 BoogieIcfgContainer [2024-11-04 20:48:09,600 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-04 20:48:09,601 INFO L158 Benchmark]: Toolchain (without parser) took 3659.87ms. Allocated memory was 222.3MB in the beginning and 316.7MB in the end (delta: 94.4MB). Free memory was 153.1MB in the beginning and 269.6MB in the end (delta: -116.6MB). Peak memory consumption was 153.7MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,601 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 222.3MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. [2024-11-04 20:48:09,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1637.28ms. Allocated memory was 222.3MB in the beginning and 316.7MB in the end (delta: 94.4MB). Free memory was 153.1MB in the beginning and 180.6MB in the end (delta: -27.6MB). Peak memory consumption was 67.6MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,605 INFO L158 Benchmark]: Boogie Procedure Inliner took 96.44ms. Allocated memory is still 316.7MB. Free memory was 180.1MB in the beginning and 174.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,605 INFO L158 Benchmark]: Boogie Preprocessor took 61.73ms. Allocated memory is still 316.7MB. Free memory was 174.9MB in the beginning and 170.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,605 INFO L158 Benchmark]: RCFGBuilder took 405.11ms. Allocated memory is still 316.7MB. Free memory was 170.1MB in the beginning and 143.4MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,605 INFO L158 Benchmark]: TraceAbstraction took 1455.71ms. Allocated memory is still 316.7MB. Free memory was 142.3MB in the beginning and 269.6MB in the end (delta: -127.3MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. [2024-11-04 20:48:09,606 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 222.3MB. Free memory is still 173.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 1637.28ms. Allocated memory was 222.3MB in the beginning and 316.7MB in the end (delta: 94.4MB). Free memory was 153.1MB in the beginning and 180.6MB in the end (delta: -27.6MB). Peak memory consumption was 67.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 96.44ms. Allocated memory is still 316.7MB. Free memory was 180.1MB in the beginning and 174.9MB in the end (delta: 5.2MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 61.73ms. Allocated memory is still 316.7MB. Free memory was 174.9MB in the beginning and 170.1MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 405.11ms. Allocated memory is still 316.7MB. Free memory was 170.1MB in the beginning and 143.4MB in the end (delta: 26.7MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 1455.71ms. Allocated memory is still 316.7MB. Free memory was 142.3MB in the beginning and 269.6MB in the end (delta: -127.3MB). Peak memory consumption was 47.3MB. Max. memory is 8.0GB. * 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: 223]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L6903-L6908] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7328] static __thread int tl_last_error = 0; VAL [s_can_fail_allocator_static={4:0}, tl_last_error=0] [L7361] CALL aws_linked_list_prev_harness() [L7346] struct aws_linked_list_node node; [L7347] struct aws_linked_list_node before; [L7350] node.prev = &before [L7351] before.next = &node [L7354] CALL aws_linked_list_prev(&node) [L4849] CALL, EXPR aws_linked_list_node_prev_is_valid(node) VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev [L4731] EXPR node->prev [L4731] EXPR node && node->prev VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev && node->prev->next == node VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node->prev [L4731] EXPR node->prev->next [L4731] EXPR node && node->prev && node->prev->next == node VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] return node && node->prev && node->prev->next == node; [L4849] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4849] CALL assume_abort_if_not((aws_linked_list_node_prev_is_valid(node))) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L211] COND FALSE !(!cond) VAL [\old(cond)=1, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4849] RET assume_abort_if_not((aws_linked_list_node_prev_is_valid(node))) VAL [node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4850] EXPR node->prev [L4850] struct aws_linked_list_node *rval = node->prev; [L4851] CALL, EXPR aws_linked_list_node_prev_is_valid(node) VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev [L4731] EXPR node->prev [L4731] EXPR node && node->prev VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev && node->prev->next == node VAL [\old(node)={5:0}, node={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] EXPR node && node->prev && node->prev->next == node [L4731] EXPR node->prev [L4731] EXPR node->prev->next [L4731] EXPR node && node->prev && node->prev->next == node VAL [\old(node)={5:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4731] return node && node->prev && node->prev->next == node; [L4851] RET, EXPR aws_linked_list_node_prev_is_valid(node) VAL [node={5:0}, rval={7:0}, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L4851] CALL __VERIFIER_assert(!((aws_linked_list_node_prev_is_valid(node)))) VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] COND TRUE !cond VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] [L223] reach_error() VAL [\old(cond)=0, s_can_fail_allocator_static={4:0}, tl_last_error=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 61 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 14/14 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! [2024-11-04 20:48:09,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...