./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/array-tiling/skippedu.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/skippedu.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26998269 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/skippedu.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-2699826-m [2024-08-14 14:11:59,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-14 14:11:59,965 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-14 14:11:59,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-14 14:11:59,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-14 14:11:59,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-14 14:11:59,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-14 14:11:59,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-14 14:11:59,992 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-14 14:11:59,993 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-14 14:11:59,994 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-14 14:11:59,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-14 14:11:59,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-14 14:11:59,995 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-14 14:11:59,996 INFO L153 SettingsManager]: * Use SBE=true [2024-08-14 14:11:59,997 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-14 14:11:59,997 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-14 14:11:59,997 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-14 14:11:59,997 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-14 14:11:59,997 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-14 14:11:59,998 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-14 14:12:00,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-14 14:12:00,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-14 14:12:00,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-14 14:12:00,002 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-14 14:12:00,002 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-14 14:12:00,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-14 14:12:00,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-14 14:12:00,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-14 14:12:00,003 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-14 14:12:00,004 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-14 14:12:00,004 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-14 14:12:00,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-14 14:12:00,005 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-14 14:12:00,005 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-14 14:12:00,005 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-14 14:12:00,007 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-14 14:12:00,007 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-14 14:12:00,007 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-14 14:12:00,008 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-14 14:12:00,008 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-14 14:12:00,008 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-14 14:12:00,008 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-14 14:12:00,009 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-14 14:12:00,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-14 14:12:00,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-14 14:12:00,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-14 14:12:00,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-14 14:12:00,251 INFO L274 PluginConnector]: CDTParser initialized [2024-08-14 14:12:00,252 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2024-08-14 14:12:01,536 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-14 14:12:01,686 INFO L384 CDTParser]: Found 1 translation units. [2024-08-14 14:12:01,686 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c [2024-08-14 14:12:01,695 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d075e054f/dee0f345e43044fd9fe0b616f8341971/FLAG0e831dd79 [2024-08-14 14:12:01,710 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d075e054f/dee0f345e43044fd9fe0b616f8341971 [2024-08-14 14:12:01,712 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-14 14:12:01,713 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-14 14:12:01,714 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/skippedu.yml/witness.yml [2024-08-14 14:12:01,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-14 14:12:01,771 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-14 14:12:01,775 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-14 14:12:01,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-14 14:12:01,779 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-14 14:12:01,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:12:01" (1/2) ... [2024-08-14 14:12:01,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e1f231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:12:01, skipping insertion in model container [2024-08-14 14:12:01,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 02:12:01" (1/2) ... [2024-08-14 14:12:01,785 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f881469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 02:12:01, skipping insertion in model container [2024-08-14 14:12:01,785 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:12:01" (2/2) ... [2024-08-14 14:12:01,786 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e1f231 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01, skipping insertion in model container [2024-08-14 14:12:01,786 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:12:01" (2/2) ... [2024-08-14 14:12:01,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-14 14:12:01,902 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c[399,412] [2024-08-14 14:12:01,915 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:12:01,922 INFO L200 MainTranslator]: Completed pre-run [2024-08-14 14:12:01,931 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c[399,412] [2024-08-14 14:12:01,939 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-14 14:12:01,956 INFO L204 MainTranslator]: Completed translation [2024-08-14 14:12:01,956 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01 WrapperNode [2024-08-14 14:12:01,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-14 14:12:01,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-14 14:12:01,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-14 14:12:01,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-14 14:12:01,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:01,968 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:01,977 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:01,992 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-08-14 14:12:01,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:01,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:02,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:02,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:02,003 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:02,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-14 14:12:02,009 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-14 14:12:02,009 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-14 14:12:02,009 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-14 14:12:02,010 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (1/1) ... [2024-08-14 14:12:02,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-14 14:12:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:12:02,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-14 14:12:02,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-14 14:12:02,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-14 14:12:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-14 14:12:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-14 14:12:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-08-14 14:12:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-08-14 14:12:02,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-14 14:12:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-14 14:12:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-14 14:12:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-14 14:12:02,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-14 14:12:02,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-14 14:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-14 14:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-14 14:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-14 14:12:02,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-14 14:12:02,129 INFO L273 CfgBuilder]: Building ICFG [2024-08-14 14:12:02,130 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-14 14:12:02,249 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-14 14:12:02,249 INFO L327 CfgBuilder]: Performing block encoding [2024-08-14 14:12:02,256 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-14 14:12:02,256 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-14 14:12:02,257 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:12:02 BoogieIcfgContainer [2024-08-14 14:12:02,257 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-14 14:12:02,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-14 14:12:02,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-14 14:12:02,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-14 14:12:02,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.08 02:12:01" (1/4) ... [2024-08-14 14:12:02,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf9257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.08 02:12:02, skipping insertion in model container [2024-08-14 14:12:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 14.08 02:12:01" (2/4) ... [2024-08-14 14:12:02,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf9257 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:12:02, skipping insertion in model container [2024-08-14 14:12:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 14.08 02:12:01" (3/4) ... [2024-08-14 14:12:02,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf9257 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 14.08 02:12:02, skipping insertion in model container [2024-08-14 14:12:02,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 14.08 02:12:02" (4/4) ... [2024-08-14 14:12:02,263 INFO L119 eAbstractionObserver]: Analyzing ICFG skippedu.c [2024-08-14 14:12:02,263 WARN L130 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-14 14:12:02,278 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-14 14:12:02,278 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-14 14:12:02,297 INFO L92 WitnessUtils]: Constructing product of automaton with 45 states and violation witness of the following lengths: [16] [2024-08-14 14:12:02,300 INFO L82 GeneralOperation]: Start removeDeadEnds. Operand has 45 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 36 states have internal predecessors, (48), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-08-14 14:12:02,381 INFO L88 GeneralOperation]: Finished removeDeadEnds. Reduced from 262 states to 71 states. [2024-08-14 14:12:02,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-14 14:12:02,402 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;@228ad93f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-14 14:12:02,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-14 14:12:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2024-08-14 14:12:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-08-14 14:12:02,408 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:12:02,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:12:02,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:12:02,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:12:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1131032030, now seen corresponding path program 1 times [2024-08-14 14:12:02,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:12:02,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594051102] [2024-08-14 14:12:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:12:02,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:12:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:12:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:02,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-08-14 14:12:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 14:12:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:12:02,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594051102] [2024-08-14 14:12:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594051102] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-14 14:12:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-14 14:12:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-14 14:12:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463550593] [2024-08-14 14:12:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-14 14:12:02,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-14 14:12:02,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:12:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-14 14:12:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 14:12:02,753 INFO L87 Difference]: Start difference. First operand 71 states. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-08-14 14:12:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:12:02,842 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2024-08-14 14:12:02,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-14 14:12:02,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-08-14 14:12:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:12:02,846 INFO L225 Difference]: With dead ends: 59 [2024-08-14 14:12:02,847 INFO L226 Difference]: Without dead ends: 59 [2024-08-14 14:12:02,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-14 14:12:02,852 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-14 14:12:02,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-14 14:12:02,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-08-14 14:12:02,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2024-08-14 14:12:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-08-14 14:12:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2024-08-14 14:12:02,888 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 35 [2024-08-14 14:12:02,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:12:02,889 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2024-08-14 14:12:02,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-08-14 14:12:02,890 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2024-08-14 14:12:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-08-14 14:12:02,891 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:12:02,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-14 14:12:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-14 14:12:02,892 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:12:02,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:12:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1588580626, now seen corresponding path program 1 times [2024-08-14 14:12:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:12:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14247660] [2024-08-14 14:12:02,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:12:02,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:12:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:03,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-14 14:12:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-08-14 14:12:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 14:12:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-14 14:12:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14247660] [2024-08-14 14:12:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14247660] provided 0 perfect and 1 imperfect interpolant sequences [2024-08-14 14:12:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495611906] [2024-08-14 14:12:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:12:03,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 14:12:03,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-14 14:12:03,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-08-14 14:12:03,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-14 14:12:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-14 14:12:03,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2024-08-14 14:12:03,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-08-14 14:12:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 14:12:03,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-08-14 14:12:03,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-08-14 14:12:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495611906] provided 0 perfect and 2 imperfect interpolant sequences [2024-08-14 14:12:03,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-08-14 14:12:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2024-08-14 14:12:03,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250044816] [2024-08-14 14:12:03,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-08-14 14:12:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-08-14 14:12:03,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-14 14:12:03,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-08-14 14:12:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-08-14 14:12:03,373 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-08-14 14:12:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-14 14:12:03,527 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-08-14 14:12:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-08-14 14:12:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-08-14 14:12:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-14 14:12:03,529 INFO L225 Difference]: With dead ends: 60 [2024-08-14 14:12:03,529 INFO L226 Difference]: Without dead ends: 60 [2024-08-14 14:12:03,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-08-14 14:12:03,532 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-14 14:12:03,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-14 14:12:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-08-14 14:12:03,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2024-08-14 14:12:03,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-08-14 14:12:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-08-14 14:12:03,541 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 37 [2024-08-14 14:12:03,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-14 14:12:03,542 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-08-14 14:12:03,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-08-14 14:12:03,542 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-08-14 14:12:03,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-08-14 14:12:03,545 INFO L187 NwaCegarLoop]: Found error trace [2024-08-14 14:12:03,546 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2024-08-14 14:12:03,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-08-14 14:12:03,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-14 14:12:03,751 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-14 14:12:03,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-14 14:12:03,751 INFO L85 PathProgramCache]: Analyzing trace with hash 736808431, now seen corresponding path program 2 times [2024-08-14 14:12:03,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-14 14:12:03,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476105251] [2024-08-14 14:12:03,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-14 14:12:03,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-14 14:12:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:12:03,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-14 14:12:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-14 14:12:03,854 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-14 14:12:03,854 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-14 14:12:03,855 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-14 14:12:03,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-08-14 14:12:03,860 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1] [2024-08-14 14:12:03,865 INFO L196 ceAbstractionStarter]: Computing trace abstraction results [2024-08-14 14:12:03,891 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.08 02:12:03 BoogieIcfgContainer [2024-08-14 14:12:03,891 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-14 14:12:03,892 INFO L158 Benchmark]: Toolchain (without parser) took 2120.03ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 125.7MB in the beginning and 156.9MB in the end (delta: -31.3MB). Peak memory consumption was 41.6MB. Max. memory is 16.1GB. [2024-08-14 14:12:03,892 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 144.2MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:12:03,892 INFO L158 Benchmark]: Witness Parser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-14 14:12:03,892 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 184.5MB. Free memory was 125.7MB in the beginning and 113.6MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-08-14 14:12:03,892 INFO L158 Benchmark]: Boogie Preprocessor took 50.39ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-14 14:12:03,893 INFO L158 Benchmark]: IcfgBuilder took 248.34ms. Allocated memory is still 184.5MB. Free memory was 111.5MB in the beginning and 96.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-08-14 14:12:03,893 INFO L158 Benchmark]: TraceAbstraction took 1632.61ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 96.3MB in the beginning and 156.9MB in the end (delta: -60.6MB). Peak memory consumption was 12.2MB. Max. memory is 16.1GB. [2024-08-14 14:12:03,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 184.5MB. Free memory was 144.4MB in the beginning and 144.2MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.10ms. Allocated memory is still 184.5MB. Free memory is still 128.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 184.5MB. Free memory was 125.7MB in the beginning and 113.6MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.39ms. Allocated memory is still 184.5MB. Free memory was 113.6MB in the beginning and 111.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 248.34ms. Allocated memory is still 184.5MB. Free memory was 111.5MB in the beginning and 96.9MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1632.61ms. Allocated memory was 184.5MB in the beginning and 255.9MB in the end (delta: 71.3MB). Free memory was 96.3MB in the beginning and 156.9MB in the end (delta: -60.6MB). Peak memory consumption was 12.2MB. 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int SIZE; [L14] const int MAX = 100000; VAL [MAX=100000, SIZE=0, \old(MAX)=100001, \old(SIZE)=100002] [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] int i; [L22] int *a = malloc(sizeof(int)*SIZE); [L24] i = 0 VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=0] [L24] COND TRUE i < SIZE VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=0] [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L24] COND TRUE i < SIZE VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=2] [L24] COND FALSE !(i < SIZE) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}] [L29] COND FALSE !(SIZE % 2 != 0) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}] [L31] CALL assume_abort_if_not(SIZE % 2 == 0) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, \old(cond)=1] [L6] COND FALSE !(!cond) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, \old(cond)=1] [L31] RET assume_abort_if_not(SIZE % 2 == 0) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}] [L32] i = 1 VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L32] COND TRUE i <= SIZE/2 VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L34] EXPR a[2*i-2] VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L34] COND FALSE !(a[2*i-2] > i) [L38] EXPR a[2*i-1] VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L38] COND TRUE a[2*i-1] > i [L40] a[2*i-1] = 2*i-1 VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=1] [L32] i++ VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=2] [L32] COND FALSE !(i <= SIZE/2) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}] [L44] i = 0 VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=0] [L44] COND TRUE i < SIZE VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=0] [L46] EXPR a[i] VAL [MAX=100000, SIZE=2, \old(SIZE)=0, a={-1:0}, i=0] [L46] CALL __VERIFIER_assert( a[i] <= i ) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, \old(cond)=0] [L8] COND TRUE !(cond) VAL [MAX=100000, SIZE=2, \old(SIZE)=0, \old(cond)=0] [L8] reach_error() VAL [MAX=100000, SIZE=2, \old(SIZE)=0, \old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 58 mSDtfsCounter, 215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 246 SizeOfPredicates, 0 NumberOfNonLiveVariables, 121 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 8/14 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! [2024-08-14 14:12:03,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, 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