./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c --full-output --witness-type violation_witness --validate ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/ifeqn4f.yml/witness.yml --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03fe66fa Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c ./svcomp-yaml-violation-generation.2024-08-01_14-26-22.files/Default/ifeqn4f.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --preprocessor.replace.while.statements.and.if-then-else.statements false --icfgbuilder.size.of.a.code.block SequenceOfStatements --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.yaml-violation-witnesses-03fe66f-m [2024-08-15 18:03:49,454 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-08-15 18:03:49,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-08-15 18:03:49,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-08-15 18:03:49,561 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-08-15 18:03:49,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-08-15 18:03:49,593 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-08-15 18:03:49,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-08-15 18:03:49,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-08-15 18:03:49,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-08-15 18:03:49,595 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-08-15 18:03:49,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-08-15 18:03:49,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-08-15 18:03:49,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-08-15 18:03:49,599 INFO L153 SettingsManager]: * Use SBE=true [2024-08-15 18:03:49,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-08-15 18:03:49,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-08-15 18:03:49,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-08-15 18:03:49,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-08-15 18:03:49,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-08-15 18:03:49,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-08-15 18:03:49,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-08-15 18:03:49,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-08-15 18:03:49,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-08-15 18:03:49,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-08-15 18:03:49,606 INFO L153 SettingsManager]: * sizeof long double=12 [2024-08-15 18:03:49,609 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-08-15 18:03:49,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-08-15 18:03:49,610 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-08-15 18:03:49,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-08-15 18:03:49,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-08-15 18:03:49,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-08-15 18:03:49,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-08-15 18:03:49,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-08-15 18:03:49,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-08-15 18:03:49,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-08-15 18:03:49,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-08-15 18:03:49,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-08-15 18:03:49,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-08-15 18:03:49,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-08-15 18:03:49,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-08-15 18:03:49,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-08-15 18:03:49,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-08-15 18:03:49,615 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Replace while statements and if-then-else statements -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder: Size of a code block -> SequenceOfStatements [2024-08-15 18:03:49,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-08-15 18:03:49,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-08-15 18:03:49,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-08-15 18:03:49,953 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-08-15 18:03:49,953 INFO L274 PluginConnector]: Witness Parser initialized [2024-08-15 18:03:49,955 INFO L431 ainManager$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/ifeqn4f.yml/witness.yml [2024-08-15 18:03:50,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-08-15 18:03:50,104 INFO L274 PluginConnector]: CDTParser initialized [2024-08-15 18:03:50,108 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c [2024-08-15 18:03:51,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-08-15 18:03:52,118 INFO L384 CDTParser]: Found 1 translation units. [2024-08-15 18:03:52,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn4f.c [2024-08-15 18:03:52,127 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff0dbe8a/dd370c52af804ddf9067fc53914cdc75/FLAG62059576e [2024-08-15 18:03:52,473 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ff0dbe8a/dd370c52af804ddf9067fc53914cdc75 [2024-08-15 18:03:52,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-08-15 18:03:52,474 INFO L133 ToolchainWalker]: Walking toolchain with 4 elements. [2024-08-15 18:03:52,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-08-15 18:03:52,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-08-15 18:03:52,481 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-08-15 18:03:52,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:03:50" (1/2) ... [2024-08-15 18:03:52,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c92238 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:03:52, skipping insertion in model container [2024-08-15 18:03:52,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:03:50" (1/2) ... [2024-08-15 18:03:52,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7a5324db and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator VIOLATION_WITNESS 15.08 06:03:52, skipping insertion in model container [2024-08-15 18:03:52,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:03:52" (2/2) ... [2024-08-15 18:03:52,485 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56c92238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52, skipping insertion in model container [2024-08-15 18:03:52,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.08 06:03:52" (2/2) ... [2024-08-15 18:03:52,502 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-08-15 18:03:52,683 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-fpi/ifeqn4f.c[590,603] [2024-08-15 18:03:52,710 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:03:52,724 INFO L200 MainTranslator]: Completed pre-run [2024-08-15 18:03:52,736 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-fpi/ifeqn4f.c[590,603] [2024-08-15 18:03:52,748 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-08-15 18:03:52,767 INFO L204 MainTranslator]: Completed translation [2024-08-15 18:03:52,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52 WrapperNode [2024-08-15 18:03:52,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-08-15 18:03:52,769 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-08-15 18:03:52,769 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-08-15 18:03:52,770 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-08-15 18:03:52,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,791 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,806 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-08-15 18:03:52,806 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,806 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,812 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,817 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-08-15 18:03:52,818 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-08-15 18:03:52,818 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-08-15 18:03:52,818 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-08-15 18:03:52,819 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (1/1) ... [2024-08-15 18:03:52,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-08-15 18:03:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:03:52,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-08-15 18:03:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-08-15 18:03:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-08-15 18:03:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-08-15 18:03:52,914 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-08-15 18:03:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-08-15 18:03:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-08-15 18:03:52,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-08-15 18:03:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2024-08-15 18:03:52,915 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2024-08-15 18:03:52,916 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-08-15 18:03:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-08-15 18:03:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-08-15 18:03:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-08-15 18:03:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2024-08-15 18:03:52,917 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-08-15 18:03:52,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-08-15 18:03:52,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-08-15 18:03:53,020 INFO L273 CfgBuilder]: Building ICFG [2024-08-15 18:03:53,025 INFO L304 CfgBuilder]: Building CFG for each procedure with an implementation [2024-08-15 18:03:53,271 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-08-15 18:03:53,272 INFO L327 CfgBuilder]: Performing block encoding [2024-08-15 18:03:53,283 INFO L349 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-08-15 18:03:53,283 INFO L354 CfgBuilder]: Removed 0 assume(true) statements. [2024-08-15 18:03:53,284 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:03:53 BoogieIcfgContainer [2024-08-15 18:03:53,284 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-08-15 18:03:53,286 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-08-15 18:03:53,287 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-08-15 18:03:53,290 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-08-15 18:03:53,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser VIOLATION_WITNESS 15.08 06:03:50" (1/4) ... [2024-08-15 18:03:53,291 WARN L100 eAbstractionObserver]: Found a witness in the YAML format. I will only consider traces that are accepted by the witness [2024-08-15 18:03:53,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e584e4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction VIOLATION_WITNESS 15.08 06:03:53, skipping insertion in model container [2024-08-15 18:03:53,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.08 06:03:52" (2/4) ... [2024-08-15 18:03:53,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e584e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:03:53, skipping insertion in model container [2024-08-15 18:03:53,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.08 06:03:52" (3/4) ... [2024-08-15 18:03:53,293 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e584e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.08 06:03:53, skipping insertion in model container [2024-08-15 18:03:53,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 15.08 06:03:53" (4/4) ... [2024-08-15 18:03:53,294 INFO L128 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c [2024-08-15 18:03:53,313 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-08-15 18:03:53,313 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-08-15 18:03:53,339 INFO L90 WitnessUtils]: Constructing product of automaton with 41 states and violation witness of the following lengths: [22] [2024-08-15 18:03:53,423 INFO L95 WitnessUtils]: Product has 336 reachable states. [2024-08-15 18:03:53,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-08-15 18:03:53,447 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;@6abfb62f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-08-15 18:03:53,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-08-15 18:03:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 407 transitions. [2024-08-15 18:03:53,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-08-15 18:03:53,462 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:03:53,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:03:53,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:03:53,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:03:53,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1391468081, now seen corresponding path program 1 times [2024-08-15 18:03:53,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:03:53,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228663737] [2024-08-15 18:03:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:03:53,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:03:53,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:03:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-08-15 18:03:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:03:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-08-15 18:03:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:03:53,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-08-15 18:03:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-08-15 18:03:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-08-15 18:03:53,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-08-15 18:03:53,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228663737] [2024-08-15 18:03:53,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228663737] provided 1 perfect and 0 imperfect interpolant sequences [2024-08-15 18:03:53,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-08-15 18:03:53,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-08-15 18:03:53,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286896528] [2024-08-15 18:03:53,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-08-15 18:03:53,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-08-15 18:03:53,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-08-15 18:03:53,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-08-15 18:03:53,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-15 18:03:53,780 INFO L87 Difference]: Start difference. First operand 336 states and 407 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-08-15 18:03:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-08-15 18:03:53,893 INFO L93 Difference]: Finished difference Result 174 states and 191 transitions. [2024-08-15 18:03:53,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-08-15 18:03:53,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2024-08-15 18:03:53,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-08-15 18:03:53,905 INFO L225 Difference]: With dead ends: 174 [2024-08-15 18:03:53,907 INFO L226 Difference]: Without dead ends: 71 [2024-08-15 18:03:53,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-08-15 18:03:53,915 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-08-15 18:03:53,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-08-15 18:03:53,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-08-15 18:03:53,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 59. [2024-08-15 18:03:53,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.183673469387755) internal successors, (58), 50 states have internal predecessors, (58), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-08-15 18:03:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2024-08-15 18:03:53,959 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 50 [2024-08-15 18:03:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-08-15 18:03:53,960 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2024-08-15 18:03:53,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-08-15 18:03:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2024-08-15 18:03:53,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-08-15 18:03:53,961 INFO L187 NwaCegarLoop]: Found error trace [2024-08-15 18:03:53,961 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-08-15 18:03:53,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-08-15 18:03:53,962 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-08-15 18:03:53,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-08-15 18:03:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash 54580379, now seen corresponding path program 1 times [2024-08-15 18:03:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-08-15 18:03:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539351018] [2024-08-15 18:03:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:03:53,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-08-15 18:03:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-08-15 18:03:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [570941936] [2024-08-15 18:03:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-08-15 18:03:54,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-08-15 18:03:54,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-08-15 18:03:54,093 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) [2024-08-15 18:03:54,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-08-15 18:03:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:03:54,214 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-08-15 18:03:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-08-15 18:03:54,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-08-15 18:03:54,282 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-08-15 18:03:54,283 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-08-15 18:03:54,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-08-15 18:03:54,485 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 [2024-08-15 18:03:54,489 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-08-15 18:03:54,493 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2024-08-15 18:03:54,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.08 06:03:54 BoogieIcfgContainer [2024-08-15 18:03:54,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-08-15 18:03:54,532 INFO L158 Benchmark]: Toolchain (without parser) took 2057.33ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 75.0MB in the beginning and 157.6MB in the end (delta: -82.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:03:54,532 INFO L158 Benchmark]: Witness Parser took 0.23ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 101.2MB in the end (delta: 211.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-15 18:03:54,532 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-08-15 18:03:54,532 INFO L158 Benchmark]: CACSL2BoogieTranslator took 292.96ms. Allocated memory is still 151.0MB. Free memory was 74.8MB in the beginning and 62.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-08-15 18:03:54,533 INFO L158 Benchmark]: Boogie Preprocessor took 47.68ms. Allocated memory is still 151.0MB. Free memory was 62.4MB in the beginning and 60.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-08-15 18:03:54,533 INFO L158 Benchmark]: IcfgBuilder took 466.64ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 60.4MB in the beginning and 178.4MB in the end (delta: -118.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2024-08-15 18:03:54,534 INFO L158 Benchmark]: TraceAbstraction took 1244.58ms. Allocated memory is still 211.8MB. Free memory was 178.4MB in the beginning and 157.6MB in the end (delta: 20.9MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2024-08-15 18:03:54,537 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.23ms. Allocated memory is still 151.0MB. Free memory was 101.4MB in the beginning and 101.2MB in the end (delta: 211.8kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CDTParser took 0.36ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 292.96ms. Allocated memory is still 151.0MB. Free memory was 74.8MB in the beginning and 62.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.68ms. Allocated memory is still 151.0MB. Free memory was 62.4MB in the beginning and 60.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 466.64ms. Allocated memory was 151.0MB in the beginning and 211.8MB in the end (delta: 60.8MB). Free memory was 60.4MB in the beginning and 178.4MB in the end (delta: -118.1MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1244.58ms. Allocated memory is still 211.8MB. Free memory was 178.4MB in the beginning and 157.6MB in the end (delta: 20.9MB). Peak memory consumption was 18.8MB. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0, \old(N)=6] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [N=2, \old(N)=0] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0, \old(cond)=1] [L13] COND FALSE !(!cond) VAL [N=2, \old(N)=0, \old(cond)=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=2, \old(N)=0] [L27] int i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] i=0 VAL [N=2, \old(N)=0, a={-2:0}, b={-1:0}, i=0] [L31] COND TRUE i