/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 10:01:05,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 10:01:05,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 10:01:05,654 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 10:01:05,655 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 10:01:05,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 10:01:05,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 10:01:05,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 10:01:05,670 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 10:01:05,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 10:01:05,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 10:01:05,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 10:01:05,675 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 10:01:05,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 10:01:05,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 10:01:05,679 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 10:01:05,680 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 10:01:05,681 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 10:01:05,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 10:01:05,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 10:01:05,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 10:01:05,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 10:01:05,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 10:01:05,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 10:01:05,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 10:01:05,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 10:01:05,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 10:01:05,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 10:01:05,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 10:01:05,713 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 10:01:05,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 10:01:05,714 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 10:01:05,715 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 10:01:05,716 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 10:01:05,717 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 10:01:05,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 10:01:05,718 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 10:01:05,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 10:01:05,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 10:01:05,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 10:01:05,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 10:01:05,722 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 [2020-10-29 10:01:05,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 10:01:05,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 10:01:05,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 10:01:05,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 10:01:05,752 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 10:01:05,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 10:01:05,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 10:01:05,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 10:01:05,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 10:01:05,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 10:01:05,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 10:01:05,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 10:01:05,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 10:01:05,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 10:01:05,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 10:01:05,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 10:01:05,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 10:01:05,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 10:01:05,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 10:01:05,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 10:01:05,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 10:01:05,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 10:01:05,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 10:01:05,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 10:01:05,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 10:01:05,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 10:01:05,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 10:01:05,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 10:01:05,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 10:01:05,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 10:01:06,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 10:01:06,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 10:01:06,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 10:01:06,160 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 10:01:06,160 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 10:01:06,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-10-29 10:01:06,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d710f628b/5f5335933f9d4346a86f619f74fca1f6/FLAG4687ec62c [2020-10-29 10:01:06,900 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 10:01:06,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-10-29 10:01:06,907 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d710f628b/5f5335933f9d4346a86f619f74fca1f6/FLAG4687ec62c [2020-10-29 10:01:07,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d710f628b/5f5335933f9d4346a86f619f74fca1f6 [2020-10-29 10:01:07,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 10:01:07,277 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 10:01:07,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 10:01:07,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 10:01:07,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 10:01:07,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2594dfe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07, skipping insertion in model container [2020-10-29 10:01:07,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 10:01:07,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 10:01:07,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:01:07,488 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 10:01:07,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 10:01:07,527 INFO L208 MainTranslator]: Completed translation [2020-10-29 10:01:07,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07 WrapperNode [2020-10-29 10:01:07,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 10:01:07,529 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 10:01:07,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 10:01:07,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 10:01:07,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,551 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (1/1) ... [2020-10-29 10:01:07,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 10:01:07,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 10:01:07,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 10:01:07,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 10:01:07,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (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 [2020-10-29 10:01:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 10:01:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 10:01:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 10:01:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 10:01:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 10:01:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 10:01:07,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-29 10:01:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 10:01:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 10:01:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 10:01:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 10:01:07,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 10:01:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 10:01:07,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 10:01:08,304 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 10:01:08,304 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 10:01:08,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:01:08 BoogieIcfgContainer [2020-10-29 10:01:08,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 10:01:08,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 10:01:08,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 10:01:08,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 10:01:08,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 10:01:07" (1/3) ... [2020-10-29 10:01:08,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b66f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:01:08, skipping insertion in model container [2020-10-29 10:01:08,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 10:01:07" (2/3) ... [2020-10-29 10:01:08,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12b66f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 10:01:08, skipping insertion in model container [2020-10-29 10:01:08,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 10:01:08" (3/3) ... [2020-10-29 10:01:08,344 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-10-29 10:01:08,357 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 10:01:08,363 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 10:01:08,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 10:01:08,420 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 10:01:08,420 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 10:01:08,420 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 10:01:08,421 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 10:01:08,421 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 10:01:08,421 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 10:01:08,421 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 10:01:08,421 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 10:01:08,444 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-29 10:01:08,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 10:01:08,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:08,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 10:01:08,453 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:08,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -888091919, now seen corresponding path program 1 times [2020-10-29 10:01:08,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:08,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796847989] [2020-10-29 10:01:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:08,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:09,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 10:01:09,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 10:01:09,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-10-29 10:01:09,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:09,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 10:01:09,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 10:01:09,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 10:01:09,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 21 [2020-10-29 10:01:09,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 10:01:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 10:01:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 10:01:09,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 10:01:09,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 10:01:09,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 10:01:09,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 10:01:09,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 10:01:09,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 10:01:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 10:01:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 10:01:09,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 10:01:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 10:01:09,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 10:01:09,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796847989] [2020-10-29 10:01:09,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 10:01:09,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 10:01:09,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583882857] [2020-10-29 10:01:10,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 10:01:10,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 10:01:10,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 10:01:10,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 10:01:10,019 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-29 10:01:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 10:01:10,309 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2020-10-29 10:01:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 10:01:10,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-29 10:01:10,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 10:01:10,321 INFO L225 Difference]: With dead ends: 76 [2020-10-29 10:01:10,321 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 10:01:10,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 10:01:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 10:01:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2020-10-29 10:01:10,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 10:01:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-29 10:01:10,373 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 18 [2020-10-29 10:01:10,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 10:01:10,373 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-29 10:01:10,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 10:01:10,374 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-29 10:01:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 10:01:10,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 10:01:10,375 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] [2020-10-29 10:01:10,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 10:01:10,376 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 10:01:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 10:01:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1265245033, now seen corresponding path program 1 times [2020-10-29 10:01:10,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 10:01:10,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776444099] [2020-10-29 10:01:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 10:01:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 10:01:10,432 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 10:01:10,432 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 10:01:10,438 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 10:01:10,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 10:01:10 BoogieIcfgContainer [2020-10-29 10:01:10,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 10:01:10,461 INFO L168 Benchmark]: Toolchain (without parser) took 3184.91 ms. Allocated memory was 162.5 MB in the beginning and 204.5 MB in the end (delta: 41.9 MB). Free memory was 137.3 MB in the beginning and 140.8 MB in the end (delta: -3.4 MB). Peak memory consumption was 39.3 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:10,462 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory was 135.8 MB in the beginning and 135.7 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 10:01:10,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.93 ms. Allocated memory is still 162.5 MB. Free memory was 136.7 MB in the beginning and 127.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:10,464 INFO L168 Benchmark]: Boogie Preprocessor took 41.26 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:10,465 INFO L168 Benchmark]: RCFGBuilder took 759.09 ms. Allocated memory is still 162.5 MB. Free memory was 125.1 MB in the beginning and 144.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:10,466 INFO L168 Benchmark]: TraceAbstraction took 2121.33 ms. Allocated memory was 162.5 MB in the beginning and 204.5 MB in the end (delta: 41.9 MB). Free memory was 144.6 MB in the beginning and 140.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. [2020-10-29 10:01:10,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory was 135.8 MB in the beginning and 135.7 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.93 ms. Allocated memory is still 162.5 MB. Free memory was 136.7 MB in the beginning and 127.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.26 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 125.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 759.09 ms. Allocated memory is still 162.5 MB. Free memory was 125.1 MB in the beginning and 144.6 MB in the end (delta: -19.5 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2121.33 ms. Allocated memory was 162.5 MB in the beginning and 204.5 MB in the end (delta: 41.9 MB). Free memory was 144.6 MB in the beginning and 140.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i