/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=BIGGEST --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 -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:25:41,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:25:41,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:25:41,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:25:41,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:25:41,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:25:41,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:25:41,087 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:25:41,089 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:25:41,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:25:41,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:25:41,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:25:41,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:25:41,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:25:41,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:25:41,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:25:41,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:25:41,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:25:41,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:25:41,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:25:41,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:25:41,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:25:41,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:25:41,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:25:41,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:25:41,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:25:41,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:25:41,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:25:41,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:25:41,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:25:41,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:25:41,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:25:41,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:25:41,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:25:41,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:25:41,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:25:41,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:25:41,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:25:41,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:25:41,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:25:41,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:25:41,139 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 [2020-10-12 16:25:41,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:25:41,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:25:41,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:25:41,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:25:41,183 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:25:41,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:25:41,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:25:41,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:25:41,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:25:41,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:25:41,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:25:41,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:25:41,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:25:41,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:25:41,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:25:41,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:25:41,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:25:41,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:25:41,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:25:41,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:25:41,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:25:41,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:25:41,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:25:41,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:25:41,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:25:41,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:25:41,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:25:41,189 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:25:41,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:25:41,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 16:25:41,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:25:41,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:25:41,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:25:41,521 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:25:41,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:25:41,522 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-10-12 16:25:41,584 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1080ae68/16aa08b3075c4724b0bca85642ab9432/FLAG89fbb4702 [2020-10-12 16:25:42,049 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:25:42,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-10-12 16:25:42,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1080ae68/16aa08b3075c4724b0bca85642ab9432/FLAG89fbb4702 [2020-10-12 16:25:42,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c1080ae68/16aa08b3075c4724b0bca85642ab9432 [2020-10-12 16:25:42,462 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:25:42,464 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:25:42,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:25:42,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:25:42,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:25:42,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e3ee29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42, skipping insertion in model container [2020-10-12 16:25:42,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:25:42,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:25:42,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:25:42,685 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:25:42,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:25:42,813 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:25:42,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42 WrapperNode [2020-10-12 16:25:42,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:25:42,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:25:42,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:25:42,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:25:42,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (1/1) ... [2020-10-12 16:25:42,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:25:42,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:25:42,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:25:42,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:25:42,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (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 [2020-10-12 16:25:42,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:25:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:25:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:25:42,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:25:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:25:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:25:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:25:42,921 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:25:42,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:25:43,232 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:25:43,232 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-12 16:25:43,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:25:43 BoogieIcfgContainer [2020-10-12 16:25:43,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:25:43,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:25:43,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:25:43,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:25:43,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:25:42" (1/3) ... [2020-10-12 16:25:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7b736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:25:43, skipping insertion in model container [2020-10-12 16:25:43,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:25:42" (2/3) ... [2020-10-12 16:25:43,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cc7b736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:25:43, skipping insertion in model container [2020-10-12 16:25:43,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:25:43" (3/3) ... [2020-10-12 16:25:43,246 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-10-12 16:25:43,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:25:43,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:25:43,281 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:25:43,307 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:25:43,307 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:25:43,307 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:25:43,308 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:25:43,308 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:25:43,308 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:25:43,308 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:25:43,308 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:25:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-12 16:25:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-12 16:25:43,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:25:43,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:25:43,338 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:25:43,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:25:43,344 INFO L82 PathProgramCache]: Analyzing trace with hash 415311520, now seen corresponding path program 1 times [2020-10-12 16:25:43,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:25:43,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012001755] [2020-10-12 16:25:43,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:25:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:25:43,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:25:43,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:25:43,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:25:44,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:25:44,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-12 16:25:44,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 16:25:44,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-12 16:25:44,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:25:44,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:25:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 16:25:44,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 16:25:44,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 16:25:44,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:25:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:25:44,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:25:44,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:25:44,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:25:44,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:25:44,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 16:25:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:25:44,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:25:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:25:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:25:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:25:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:25:44,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012001755] [2020-10-12 16:25:44,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:25:44,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:25:44,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295815274] [2020-10-12 16:25:44,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:25:44,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:25:44,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:25:44,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:25:44,478 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-10-12 16:25:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:25:44,687 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2020-10-12 16:25:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:25:44,689 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-12 16:25:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:25:44,700 INFO L225 Difference]: With dead ends: 71 [2020-10-12 16:25:44,700 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 16:25:44,704 INFO L675 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 [2020-10-12 16:25:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 16:25:44,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-10-12 16:25:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 16:25:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-10-12 16:25:44,751 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2020-10-12 16:25:44,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:25:44,752 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-10-12 16:25:44,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:25:44,752 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-10-12 16:25:44,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 16:25:44,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:25:44,753 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] [2020-10-12 16:25:44,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:25:44,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:25:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:25:44,755 INFO L82 PathProgramCache]: Analyzing trace with hash -825329612, now seen corresponding path program 1 times [2020-10-12 16:25:44,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:25:44,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529890434] [2020-10-12 16:25:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:25:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 16:25:44,795 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 16:25:44,795 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 16:25:44,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:25:44,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:25:44 BoogieIcfgContainer [2020-10-12 16:25:44,818 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:25:44,821 INFO L168 Benchmark]: Toolchain (without parser) took 2357.01 ms. Allocated memory was 142.1 MB in the beginning and 233.8 MB in the end (delta: 91.8 MB). Free memory was 104.0 MB in the beginning and 177.6 MB in the end (delta: -73.5 MB). Peak memory consumption was 18.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,822 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.01 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 184.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,824 INFO L168 Benchmark]: Boogie Preprocessor took 39.19 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 182.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,825 INFO L168 Benchmark]: RCFGBuilder took 382.21 ms. Allocated memory is still 205.5 MB. Free memory was 182.2 MB in the beginning and 165.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,826 INFO L168 Benchmark]: TraceAbstraction took 1579.15 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 164.5 MB in the beginning and 177.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-10-12 16:25:44,830 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 351.01 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 103.8 MB in the beginning and 184.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.19 ms. Allocated memory is still 205.5 MB. Free memory was 184.5 MB in the beginning and 182.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.21 ms. Allocated memory is still 205.5 MB. Free memory was 182.2 MB in the beginning and 165.1 MB in the end (delta: 17.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1579.15 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 164.5 MB in the beginning and 177.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i