/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/nsqm.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:39:12,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:39:12,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:39:12,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:39:12,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:39:12,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:39:12,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:39:12,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:39:12,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:39:12,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:39:12,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:39:12,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:39:12,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:39:12,230 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:39:12,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:39:12,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:39:12,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:39:12,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:39:12,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:39:12,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:39:12,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:39:12,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:39:12,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:39:12,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:39:12,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:39:12,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:39:12,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:39:12,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:39:12,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:39:12,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:39:12,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:39:12,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:39:12,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:39:12,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:39:12,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:39:12,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:39:12,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:39:12,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:39:12,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:39:12,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:39:12,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:39:12,307 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 19:39:12,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:39:12,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:39:12,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:39:12,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:39:12,373 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:39:12,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:39:12,374 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:39:12,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:39:12,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:39:12,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:39:12,376 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:39:12,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:39:12,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:39:12,377 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:39:12,377 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:39:12,377 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:39:12,377 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:39:12,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:39:12,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:39:12,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:39:12,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:39:12,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:39:12,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:39:12,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:39:12,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:39:12,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:39:12,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:39:12,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:39:12,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:39:12,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:39:12,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:39:12,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:39:12,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:39:12,902 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:39:12,903 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:39:12,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqm.c [2020-10-26 19:39:12,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f51e5ede/818b5a7d7ffb42d9b141137fca86c822/FLAG85f297529 [2020-10-26 19:39:13,520 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:39:13,520 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/nsqm.c [2020-10-26 19:39:13,532 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f51e5ede/818b5a7d7ffb42d9b141137fca86c822/FLAG85f297529 [2020-10-26 19:39:13,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f51e5ede/818b5a7d7ffb42d9b141137fca86c822 [2020-10-26 19:39:13,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:39:13,892 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:39:13,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:39:13,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:39:13,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:39:13,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:13" (1/1) ... [2020-10-26 19:39:13,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5274ef25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:13, skipping insertion in model container [2020-10-26 19:39:13,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:39:13" (1/1) ... [2020-10-26 19:39:13,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:39:13,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:39:14,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:39:14,145 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:39:14,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:39:14,220 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:39:14,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14 WrapperNode [2020-10-26 19:39:14,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:39:14,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:39:14,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:39:14,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:39:14,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (1/1) ... [2020-10-26 19:39:14,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:39:14,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:39:14,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:39:14,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:39:14,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (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 19:39:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:39:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:39:14,437 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:39:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:39:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:39:14,438 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:39:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:39:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:39:14,438 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:39:14,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:39:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:39:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:39:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:39:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:39:14,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:39:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:39:14,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:39:15,045 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:39:15,045 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:39:15,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:15 BoogieIcfgContainer [2020-10-26 19:39:15,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:39:15,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:39:15,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:39:15,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:39:15,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:39:13" (1/3) ... [2020-10-26 19:39:15,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db367fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:15, skipping insertion in model container [2020-10-26 19:39:15,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:39:14" (2/3) ... [2020-10-26 19:39:15,058 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db367fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:39:15, skipping insertion in model container [2020-10-26 19:39:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:39:15" (3/3) ... [2020-10-26 19:39:15,060 INFO L111 eAbstractionObserver]: Analyzing ICFG nsqm.c [2020-10-26 19:39:15,072 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:39:15,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:39:15,087 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:39:15,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:39:15,117 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:39:15,117 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:39:15,117 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:39:15,117 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:39:15,117 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:39:15,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:39:15,118 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:39:15,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-26 19:39:15,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 19:39:15,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:39:15,145 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] [2020-10-26 19:39:15,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:39:15,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:39:15,152 INFO L82 PathProgramCache]: Analyzing trace with hash -391571351, now seen corresponding path program 1 times [2020-10-26 19:39:15,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:39:15,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248831659] [2020-10-26 19:39:15,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:39:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:39:15,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:39:15,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248831659] [2020-10-26 19:39:15,531 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-26 19:39:15,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:39:15,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-26 19:39:15,532 ERROR L205 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-26 19:39:15,533 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:39:15,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:39:15,561 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-26 19:39:15,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:39:15 BoogieIcfgContainer [2020-10-26 19:39:15,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:39:15,566 INFO L168 Benchmark]: Toolchain (without parser) took 1676.74 ms. Allocated memory is still 151.0 MB. Free memory was 129.6 MB in the beginning and 101.3 MB in the end (delta: 28.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:15,568 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:39:15,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.17 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 118.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:15,574 INFO L168 Benchmark]: Boogie Preprocessor took 105.62 ms. Allocated memory is still 151.0 MB. Free memory was 118.4 MB in the beginning and 134.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:15,576 INFO L168 Benchmark]: RCFGBuilder took 716.63 ms. Allocated memory is still 151.0 MB. Free memory was 134.6 MB in the beginning and 117.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:15,578 INFO L168 Benchmark]: TraceAbstraction took 511.77 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 101.3 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-26 19:39:15,590 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 151.0 MB. Free memory is still 122.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 329.17 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 118.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.62 ms. Allocated memory is still 151.0 MB. Free memory was 118.4 MB in the beginning and 134.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 716.63 ms. Allocated memory is still 151.0 MB. Free memory was 134.6 MB in the beginning and 117.6 MB in the end (delta: 17.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 511.77 ms. Allocated memory is still 151.0 MB. Free memory was 117.1 MB in the beginning and 101.3 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] long long i; [L28] long long *a = malloc(sizeof(long long)*N); [L29] long long *b = malloc(sizeof(long long)*N); [L31] b[0] = 1 [L32] a[0] = N+1 [L34] i=1 [L34] COND FALSE !(i