/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-fpi/ncompf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:38:42,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:38:42,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:38:42,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:38:42,547 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:38:42,552 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:38:42,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:38:42,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:38:42,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:38:42,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:38:42,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:38:42,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:38:42,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:38:42,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:38:42,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:38:42,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:38:42,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:38:42,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:38:42,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:38:42,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:38:42,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:38:42,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:38:42,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:38:42,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:38:42,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:38:42,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:38:42,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:38:42,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:38:42,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:38:42,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:38:42,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:38:42,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:38:42,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:38:42,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:38:42,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:38:42,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:38:42,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:38:42,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:38:42,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:38:42,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:38:42,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:38:42,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 19:38:42,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:38:42,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:38:42,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:38:42,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:38:42,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:38:42,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:38:42,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:38:42,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:38:42,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:38:42,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:38:42,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:38:42,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:38:42,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:38:42,644 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:38:42,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:38:42,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:38:42,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:38:42,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:38:42,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:38:42,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:38:42,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:38:42,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:38:42,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:38:42,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:38:42,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:38:42,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:38:42,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:38:42,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:38:42,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:38:42,647 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-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:38:43,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:38:43,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:38:43,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:38:43,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:38:43,044 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:38:43,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-26 19:38:43,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4349ba35f/a6276c9ea286497590e6b2adbf03bcca/FLAG54aa0a21a [2020-10-26 19:38:43,883 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:38:43,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ncompf.c [2020-10-26 19:38:43,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4349ba35f/a6276c9ea286497590e6b2adbf03bcca/FLAG54aa0a21a [2020-10-26 19:38:44,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4349ba35f/a6276c9ea286497590e6b2adbf03bcca [2020-10-26 19:38:44,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:38:44,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:38:44,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:38:44,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:38:44,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:38:44,254 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf394da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44, skipping insertion in model container [2020-10-26 19:38:44,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:38:44,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:38:44,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:38:44,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:38:44,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:38:44,519 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:38:44,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44 WrapperNode [2020-10-26 19:38:44,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:38:44,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:38:44,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:38:44,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:38:44,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... [2020-10-26 19:38:44,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:38:44,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:38:44,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:38:44,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:38:44,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:38:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:38:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:38:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:38:44,658 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:38:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:38:44,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:38:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:38:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:38:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:38:44,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:38:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:38:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:38:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:38:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:38:44,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:38:44,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:38:44,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:38:45,301 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:38:45,302 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-26 19:38:45,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:45 BoogieIcfgContainer [2020-10-26 19:38:45,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:38:45,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:38:45,311 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:38:45,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:38:45,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:38:44" (1/3) ... [2020-10-26 19:38:45,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602923d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:45, skipping insertion in model container [2020-10-26 19:38:45,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:38:44" (2/3) ... [2020-10-26 19:38:45,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602923d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:38:45, skipping insertion in model container [2020-10-26 19:38:45,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:38:45" (3/3) ... [2020-10-26 19:38:45,321 INFO L111 eAbstractionObserver]: Analyzing ICFG ncompf.c [2020-10-26 19:38:45,334 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:38:45,340 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:38:45,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:38:45,403 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:38:45,404 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:38:45,404 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:38:45,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:38:45,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:38:45,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:38:45,404 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:38:45,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:38:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-26 19:38:45,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-26 19:38:45,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:38:45,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 19:38:45,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:38:45,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:38:45,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1041170357, now seen corresponding path program 1 times [2020-10-26 19:38:45,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:38:45,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966185628] [2020-10-26 19:38:45,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:38:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:38:45,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:38:45,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966185628] [2020-10-26 19:38:45,732 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-26 19:38:45,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:38:45,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-26 19:38:45,733 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-26 19:38:45,734 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:38:45,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:38:45,756 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 19:38:45,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:38:45 BoogieIcfgContainer [2020-10-26 19:38:45,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:38:45,760 INFO L168 Benchmark]: Toolchain (without parser) took 1522.81 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 113.4 MB in the end (delta: 15.3 MB). Peak memory consumption was 16.2 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:45,761 INFO L168 Benchmark]: CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:38:45,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.79 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:45,763 INFO L168 Benchmark]: Boogie Preprocessor took 52.55 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:45,764 INFO L168 Benchmark]: RCFGBuilder took 730.91 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 129.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:45,765 INFO L168 Benchmark]: TraceAbstraction took 446.40 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 113.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-26 19:38:45,770 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.66 ms. Allocated memory is still 125.8 MB. Free memory was 100.5 MB in the beginning and 100.4 MB in the end (delta: 66.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.79 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.55 ms. Allocated memory is still 153.1 MB. Free memory was 118.1 MB in the beginning and 116.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 730.91 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 129.6 MB in the end (delta: -13.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 446.40 ms. Allocated memory is still 153.1 MB. Free memory was 129.2 MB in the beginning and 113.4 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L30] long long *c = malloc(sizeof(long long)*N); [L32] a[0] = 6 [L33] b[0] = 1 [L34] c[0] = 0 [L35] i=1 [L35] COND FALSE !(i