/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/array-fpi/ifeqn5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 09:05:21,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 09:05:21,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 09:05:21,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 09:05:21,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 09:05:21,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 09:05:21,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 09:05:21,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 09:05:21,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 09:05:21,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 09:05:21,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 09:05:21,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 09:05:21,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 09:05:21,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 09:05:21,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 09:05:21,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 09:05:21,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 09:05:21,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 09:05:21,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 09:05:21,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 09:05:21,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 09:05:21,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 09:05:21,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 09:05:21,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 09:05:21,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 09:05:21,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 09:05:21,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 09:05:21,204 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 09:05:21,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 09:05:21,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 09:05:21,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 09:05:21,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 09:05:21,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 09:05:21,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 09:05:21,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 09:05:21,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 09:05:21,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 09:05:21,210 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 09:05:21,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 09:05:21,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 09:05:21,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 09:05:21,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 09:05:21,245 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 09:05:21,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 09:05:21,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 09:05:21,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 09:05:21,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 09:05:21,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 09:05:21,247 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 09:05:21,247 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 09:05:21,247 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 09:05:21,247 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 09:05:21,248 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 09:05:21,248 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 09:05:21,248 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 09:05:21,248 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 09:05:21,248 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 09:05:21,248 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 09:05:21,249 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 09:05:21,249 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 09:05:21,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 09:05:21,250 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 09:05:21,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 09:05:21,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 09:05:21,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 09:05:21,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 09:05:21,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 09:05:21,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 09:05:21,251 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 09:05:21,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 09:05:21,251 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 09:05:21,252 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 09:05:21,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 09:05:21,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 09:05:21,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:05:21,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 09:05:21,252 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 09:05:21,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 09:05:21,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 09:05:21,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 09:05:21,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 09:05:21,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 09:05:21,526 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 09:05:21,526 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 09:05:21,527 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/ifeqn5f.c [2023-04-01 09:05:22,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 09:05:22,925 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 09:05:22,926 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn5f.c [2023-04-01 09:05:22,931 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f01a045d6/438b13626d5e4d9db0eaae589eaccb9e/FLAG62ccdb9a8 [2023-04-01 09:05:23,344 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f01a045d6/438b13626d5e4d9db0eaae589eaccb9e [2023-04-01 09:05:23,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 09:05:23,347 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 09:05:23,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 09:05:23,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 09:05:23,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 09:05:23,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7025408b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23, skipping insertion in model container [2023-04-01 09:05:23,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 09:05:23,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 09:05:23,509 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn5f.c[590,603] [2023-04-01 09:05:23,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:05:23,532 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 09:05:23,541 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/ifeqn5f.c[590,603] [2023-04-01 09:05:23,548 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 09:05:23,560 INFO L208 MainTranslator]: Completed translation [2023-04-01 09:05:23,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23 WrapperNode [2023-04-01 09:05:23,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 09:05:23,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 09:05:23,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 09:05:23,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 09:05:23,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 09:05:23,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 09:05:23,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 09:05:23,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 09:05:23,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (1/1) ... [2023-04-01 09:05:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 09:05:23,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:05:23,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-01 09:05:23,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-01 09:05:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 09:05:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 09:05:23,665 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 09:05:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 09:05:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 09:05:23,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 09:05:23,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 09:05:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 09:05:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 09:05:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 09:05:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 09:05:23,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 09:05:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-01 09:05:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-01 09:05:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 09:05:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-01 09:05:23,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 09:05:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 09:05:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 09:05:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 09:05:23,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 09:05:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 09:05:23,780 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 09:05:23,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 09:05:24,047 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 09:05:24,113 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 09:05:24,113 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-04-01 09:05:24,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:05:24 BoogieIcfgContainer [2023-04-01 09:05:24,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 09:05:24,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 09:05:24,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 09:05:24,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 09:05:24,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 09:05:23" (1/3) ... [2023-04-01 09:05:24,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b5fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:05:24, skipping insertion in model container [2023-04-01 09:05:24,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 09:05:23" (2/3) ... [2023-04-01 09:05:24,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b5fc78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 09:05:24, skipping insertion in model container [2023-04-01 09:05:24,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 09:05:24" (3/3) ... [2023-04-01 09:05:24,129 INFO L112 eAbstractionObserver]: Analyzing ICFG ifeqn5f.c [2023-04-01 09:05:24,146 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 09:05:24,146 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 09:05:24,197 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 09:05:24,203 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=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@70e952a4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 09:05:24,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 09:05:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-04-01 09:05:24,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-04-01 09:05:24,215 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:05:24,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:05:24,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:05:24,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:05:24,223 INFO L85 PathProgramCache]: Analyzing trace with hash -329856190, now seen corresponding path program 1 times [2023-04-01 09:05:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:05:24,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968786031] [2023-04-01 09:05:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:05:24,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:05:24,332 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 09:05:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499877355] [2023-04-01 09:05:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:05:24,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:05:24,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:05:24,345 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) [2023-04-01 09:05:24,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-01 09:05:24,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 09:05:24,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-04-01 09:05:24,461 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-01 09:05:24,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 09:05:24,540 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-04-01 09:05:24,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 09:05:24,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968786031] [2023-04-01 09:05:24,541 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-04-01 09:05:24,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499877355] [2023-04-01 09:05:24,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499877355] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 09:05:24,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 09:05:24,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-01 09:05:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161885431] [2023-04-01 09:05:24,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 09:05:24,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-01 09:05:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 09:05:24,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-01 09:05:24,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 09:05:24,586 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 09:05:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 09:05:24,700 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-04-01 09:05:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-04-01 09:05:24,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-04-01 09:05:24,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 09:05:24,709 INFO L225 Difference]: With dead ends: 48 [2023-04-01 09:05:24,710 INFO L226 Difference]: Without dead ends: 26 [2023-04-01 09:05:24,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-04-01 09:05:24,716 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-04-01 09:05:24,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-04-01 09:05:24,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-04-01 09:05:24,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-04-01 09:05:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-04-01 09:05:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-04-01 09:05:24,761 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2023-04-01 09:05:24,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 09:05:24,762 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-04-01 09:05:24,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-01 09:05:24,762 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-04-01 09:05:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-04-01 09:05:24,764 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 09:05:24,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 09:05:24,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-01 09:05:24,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-04-01 09:05:24,970 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 09:05:24,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 09:05:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 276511424, now seen corresponding path program 1 times [2023-04-01 09:05:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 09:05:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790797135] [2023-04-01 09:05:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:05:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 09:05:25,027 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-04-01 09:05:25,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448938035] [2023-04-01 09:05:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 09:05:25,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-01 09:05:25,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 09:05:25,034 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-01 09:05:25,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-01 09:05:25,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 09:05:25,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 09:05:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 09:05:25,173 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 09:05:25,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 09:05:25,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 09:05:25,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-01 09:05:25,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-04-01 09:05:25,393 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 09:05:25,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 09:05:25,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 09:05:25 BoogieIcfgContainer [2023-04-01 09:05:25,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 09:05:25,416 INFO L158 Benchmark]: Toolchain (without parser) took 2068.52ms. Allocated memory is still 222.3MB. Free memory was 183.5MB in the beginning and 111.4MB in the end (delta: 72.1MB). Peak memory consumption was 72.4MB. Max. memory is 8.0GB. [2023-04-01 09:05:25,416 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 127.9MB in the end (delta: 179.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 09:05:25,416 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.03ms. Allocated memory is still 222.3MB. Free memory was 183.5MB in the beginning and 172.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 09:05:25,417 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 222.3MB. Free memory was 172.7MB in the beginning and 171.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 09:05:25,417 INFO L158 Benchmark]: RCFGBuilder took 525.75ms. Allocated memory is still 222.3MB. Free memory was 171.2MB in the beginning and 155.2MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-04-01 09:05:25,418 INFO L158 Benchmark]: TraceAbstraction took 1290.97ms. Allocated memory is still 222.3MB. Free memory was 154.4MB in the beginning and 111.4MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. [2023-04-01 09:05:25,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 127.9MB in the end (delta: 179.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.03ms. Allocated memory is still 222.3MB. Free memory was 183.5MB in the beginning and 172.7MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 222.3MB. Free memory was 172.7MB in the beginning and 171.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 525.75ms. Allocated memory is still 222.3MB. Free memory was 171.2MB in the beginning and 155.2MB in the end (delta: 16.0MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 1290.97ms. Allocated memory is still 222.3MB. Free memory was 154.4MB in the beginning and 111.4MB in the end (delta: 43.0MB). Peak memory consumption was 43.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [N=1, \old(N)=0] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=1, \old(N)=0, \old(cond)=1] [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [N=1, \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=1, \old(N)=0, a={4:0}, b={5:0}, i=0] [L31] COND TRUE i