/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 IntervalDomain -i ../sv-benchmarks/c/array-fpi/modp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 21:01:01,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 21:01:01,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 21:01:01,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 21:01:01,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 21:01:01,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 21:01:01,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 21:01:01,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 21:01:01,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 21:01:01,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 21:01:01,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 21:01:01,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 21:01:01,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 21:01:01,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 21:01:01,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 21:01:01,388 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 21:01:01,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 21:01:01,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 21:01:01,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 21:01:01,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 21:01:01,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 21:01:01,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 21:01:01,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 21:01:01,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 21:01:01,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 21:01:01,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 21:01:01,401 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 21:01:01,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 21:01:01,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 21:01:01,402 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 21:01:01,402 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 21:01:01,403 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 21:01:01,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 21:01:01,404 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 21:01:01,405 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 21:01:01,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 21:01:01,406 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 21:01:01,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 21:01:01,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 21:01:01,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 21:01:01,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 21:01:01,408 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 [2023-03-31 21:01:01,430 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 21:01:01,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 21:01:01,431 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 21:01:01,431 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 21:01:01,432 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 21:01:01,432 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 21:01:01,432 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 21:01:01,432 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 21:01:01,432 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 21:01:01,432 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 21:01:01,437 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 21:01:01,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 21:01:01,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 21:01:01,437 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 21:01:01,438 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 21:01:01,438 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 21:01:01,438 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 21:01:01,438 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 21:01:01,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 21:01:01,439 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 21:01:01,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 21:01:01,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:01:01,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 21:01:01,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 21:01:01,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 21:01:01,627 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 21:01:01,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 21:01:01,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 21:01:01,653 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 21:01:01,653 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 21:01:01,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/modp.c [2023-03-31 21:01:02,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 21:01:02,764 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 21:01:02,764 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/modp.c [2023-03-31 21:01:02,768 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e05c9c/6ad28d4b6ecf483cbfd66c936ab49473/FLAG5d1ddf9cf [2023-03-31 21:01:02,782 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/902e05c9c/6ad28d4b6ecf483cbfd66c936ab49473 [2023-03-31 21:01:02,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 21:01:02,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 21:01:02,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 21:01:02,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 21:01:02,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 21:01:02,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@517b88e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02, skipping insertion in model container [2023-03-31 21:01:02,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,797 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 21:01:02,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 21:01:02,887 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/modp.c[587,600] [2023-03-31 21:01:02,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:01:02,902 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 21:01:02,910 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/modp.c[587,600] [2023-03-31 21:01:02,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 21:01:02,931 INFO L208 MainTranslator]: Completed translation [2023-03-31 21:01:02,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02 WrapperNode [2023-03-31 21:01:02,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 21:01:02,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 21:01:02,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 21:01:02,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 21:01:02,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,944 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,952 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 21:01:02,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 21:01:02,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 21:01:02,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 21:01:02,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (1/1) ... [2023-03-31 21:01:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 21:01:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:01:02,978 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) [2023-03-31 21:01:02,980 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 [2023-03-31 21:01:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 21:01:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 21:01:03,006 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 21:01:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 21:01:03,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 21:01:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 21:01:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 21:01:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 21:01:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 21:01:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 21:01:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 21:01:03,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 21:01:03,059 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 21:01:03,061 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 21:01:03,205 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 21:01:03,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 21:01:03,243 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 21:01:03,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:01:03 BoogieIcfgContainer [2023-03-31 21:01:03,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 21:01:03,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 21:01:03,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 21:01:03,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 21:01:03,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 09:01:02" (1/3) ... [2023-03-31 21:01:03,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:01:03, skipping insertion in model container [2023-03-31 21:01:03,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 09:01:02" (2/3) ... [2023-03-31 21:01:03,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e284f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 09:01:03, skipping insertion in model container [2023-03-31 21:01:03,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 09:01:03" (3/3) ... [2023-03-31 21:01:03,252 INFO L112 eAbstractionObserver]: Analyzing ICFG modp.c [2023-03-31 21:01:03,263 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 21:01:03,263 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 21:01:03,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 21:01:03,302 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;@3e76e1bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 21:01:03,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 21:01:03,305 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) [2023-03-31 21:01:03,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-03-31 21:01:03,313 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:01:03,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:01:03,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:01:03,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:01:03,319 INFO L85 PathProgramCache]: Analyzing trace with hash -237629243, now seen corresponding path program 1 times [2023-03-31 21:01:03,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:01:03,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744040775] [2023-03-31 21:01:03,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:01:03,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:01:03,426 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 21:01:03,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72722334] [2023-03-31 21:01:03,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:01:03,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:01:03,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:01:03,430 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) [2023-03-31 21:01:03,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 21:01:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:01:03,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-03-31 21:01:03,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:01:03,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:01:03,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 21:01:03,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:01:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744040775] [2023-03-31 21:01:03,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 21:01:03,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72722334] [2023-03-31 21:01:03,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72722334] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 21:01:03,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:01:03,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 21:01:03,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930085177] [2023-03-31 21:01:03,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 21:01:03,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 21:01:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 21:01:03,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 21:01:03,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-03-31 21:01:03,621 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) [2023-03-31 21:01:03,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 21:01:03,670 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2023-03-31 21:01:03,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 21:01:03,672 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 [2023-03-31 21:01:03,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 21:01:03,682 INFO L225 Difference]: With dead ends: 48 [2023-03-31 21:01:03,682 INFO L226 Difference]: Without dead ends: 26 [2023-03-31 21:01:03,684 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 [2023-03-31 21:01:03,687 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 21:01:03,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 21:01:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-03-31 21:01:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2023-03-31 21:01:03,711 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) [2023-03-31 21:01:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-03-31 21:01:03,713 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2023-03-31 21:01:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 21:01:03,713 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-03-31 21:01:03,713 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) [2023-03-31 21:01:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-03-31 21:01:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-03-31 21:01:03,714 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 21:01:03,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 21:01:03,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 21:01:03,917 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 [2023-03-31 21:01:03,917 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 21:01:03,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 21:01:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1421732166, now seen corresponding path program 1 times [2023-03-31 21:01:03,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 21:01:03,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628794179] [2023-03-31 21:01:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:01:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 21:01:03,967 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-03-31 21:01:03,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387879140] [2023-03-31 21:01:03,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 21:01:03,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 21:01:03,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 21:01:03,973 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) [2023-03-31 21:01:03,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 21:01:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 21:01:04,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 26 conjunts are in the unsatisfiable core [2023-03-31 21:01:04,043 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 21:01:04,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-03-31 21:01:04,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-03-31 21:01:04,236 INFO L321 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2023-03-31 21:01:04,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 29 [2023-03-31 21:01:04,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-03-31 21:01:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 21:01:04,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 21:01:39,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 21:01:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628794179] [2023-03-31 21:01:39,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-03-31 21:01:39,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387879140] [2023-03-31 21:01:39,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. [2023-03-31 21:01:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [455504331] [2023-03-31 21:01:39,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 139 [2023-03-31 21:01:39,202 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-03-31 21:01:39,202 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 21:01:39,204 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 21:01:39,208 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 21:01:39,209 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 21:01:39,225 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:314) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:263) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:223) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StateBasedDomain.isEqBottom(StateBasedDomain.java:112) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 43 more [2023-03-31 21:01:39,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2023-03-31 21:01:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2023-03-31 21:01:39,226 ERROR L171 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2023-03-31 21:01:39,227 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-03-31 21:01:39,231 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 21:01:39,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 21:01:39,432 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 [2023-03-31 21:01:39,436 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 21:01:39,438 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 21:01:39,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 09:01:39 BoogieIcfgContainer [2023-03-31 21:01:39,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 21:01:39,448 INFO L158 Benchmark]: Toolchain (without parser) took 36662.86ms. Allocated memory is still 299.9MB. Free memory was 261.0MB in the beginning and 189.2MB in the end (delta: 71.8MB). Peak memory consumption was 73.2MB. Max. memory is 8.0GB. [2023-03-31 21:01:39,448 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 21:01:39,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.87ms. Allocated memory is still 299.9MB. Free memory was 261.0MB in the beginning and 250.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 21:01:39,449 INFO L158 Benchmark]: Boogie Preprocessor took 21.65ms. Allocated memory is still 299.9MB. Free memory was 250.4MB in the beginning and 248.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 21:01:39,449 INFO L158 Benchmark]: RCFGBuilder took 292.38ms. Allocated memory is still 299.9MB. Free memory was 248.3MB in the beginning and 234.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 21:01:39,450 INFO L158 Benchmark]: TraceAbstraction took 36199.35ms. Allocated memory is still 299.9MB. Free memory was 233.1MB in the beginning and 189.2MB in the end (delta: 43.9MB). Peak memory consumption was 44.9MB. Max. memory is 8.0GB. [2023-03-31 21:01:39,451 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 127.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 142.87ms. Allocated memory is still 299.9MB. Free memory was 261.0MB in the beginning and 250.4MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.65ms. Allocated memory is still 299.9MB. Free memory was 250.4MB in the beginning and 248.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 292.38ms. Allocated memory is still 299.9MB. Free memory was 248.3MB in the beginning and 234.1MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 36199.35ms. Allocated memory is still 299.9MB. Free memory was 233.1MB in the beginning and 189.2MB in the end (delta: 43.9MB). Peak memory consumption was 44.9MB. 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 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND TRUE !cond [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i