/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 SingleStatement --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 -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-c90d42b [2020-09-25 12:31:32,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:31:32,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:31:32,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:31:32,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:31:32,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:31:32,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:31:32,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:31:32,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:31:32,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:31:32,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:31:32,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:31:32,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:31:32,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:31:32,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:31:32,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:31:32,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:31:32,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:31:32,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:31:32,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:31:32,244 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:31:32,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:31:32,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:31:32,247 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:31:32,250 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:31:32,250 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:31:32,250 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:31:32,251 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:31:32,252 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:31:32,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:31:32,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:31:32,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:31:32,255 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:31:32,256 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:31:32,257 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:31:32,257 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:31:32,258 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:31:32,258 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:31:32,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:31:32,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:31:32,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:31:32,261 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 [2020-09-25 12:31:32,288 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:31:32,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:31:32,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:31:32,290 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:31:32,290 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:31:32,291 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:31:32,291 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:31:32,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:31:32,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:31:32,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:31:32,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:31:32,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:31:32,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:31:32,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:31:32,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:31:32,293 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:31:32,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:31:32,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:31:32,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:31:32,293 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:31:32,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:31:32,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:31:32,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:31:32,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:31:32,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:31:32,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:31:32,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:31:32,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:31:32,295 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:31:32,295 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 -> SingleStatement 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; 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; 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; 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; 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; 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; [2020-09-25 12:31:32,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:31:32,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:31:32,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:31:32,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:31:32,852 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:31:32,853 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 12:31:32,933 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd21a848/66b983bf1a0c4da28f0a08a17a266999/FLAG3b8840e9a [2020-09-25 12:31:33,509 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:31:33,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 12:31:33,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd21a848/66b983bf1a0c4da28f0a08a17a266999/FLAG3b8840e9a [2020-09-25 12:31:33,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bcd21a848/66b983bf1a0c4da28f0a08a17a266999 [2020-09-25 12:31:33,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:31:33,827 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:31:33,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:33,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:31:33,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:31:33,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:33" (1/1) ... [2020-09-25 12:31:33,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1850e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:33, skipping insertion in model container [2020-09-25 12:31:33,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:33" (1/1) ... [2020-09-25 12:31:33,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:31:33,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:31:34,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:34,125 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:31:34,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:34,188 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:31:34,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34 WrapperNode [2020-09-25 12:31:34,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:34,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:31:34,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:31:34,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:31:34,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (1/1) ... [2020-09-25 12:31:34,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:31:34,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:31:34,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:31:34,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:31:34,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (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 [2020-09-25 12:31:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:31:34,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:31:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:31:34,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:31:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:31:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:31:34,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:31:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 12:31:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:31:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:31:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:31:34,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:31:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:31:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:31:34,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:31:34,847 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:31:34,848 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 12:31:34,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:34 BoogieIcfgContainer [2020-09-25 12:31:34,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:31:34,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:31:34,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:31:34,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:31:34,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:31:33" (1/3) ... [2020-09-25 12:31:34,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b3fbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:34, skipping insertion in model container [2020-09-25 12:31:34,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:34" (2/3) ... [2020-09-25 12:31:34,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b3fbd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:34, skipping insertion in model container [2020-09-25 12:31:34,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:34" (3/3) ... [2020-09-25 12:31:34,870 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-09-25 12:31:34,880 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:31:34,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:31:34,910 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:31:34,944 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:31:34,945 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:31:34,945 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:31:34,945 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:31:34,945 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:31:34,945 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:31:34,946 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:31:34,946 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:31:34,978 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-25 12:31:34,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 12:31:34,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:34,989 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:34,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:34,996 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-09-25 12:31:35,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:35,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284975630] [2020-09-25 12:31:35,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:35,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:35,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:31:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:31:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-09-25 12:31:35,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:35,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:31:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:31:35,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:31:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 12:31:36,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:36,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:36,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:36,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:36,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:36,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:31:36,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:36,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:36,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:36,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:31:36,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284975630] [2020-09-25 12:31:36,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:36,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:31:36,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519369977] [2020-09-25 12:31:36,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:31:36,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:36,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:31:36,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:31:36,161 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 5 states. [2020-09-25 12:31:36,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:36,569 INFO L93 Difference]: Finished difference Result 157 states and 188 transitions. [2020-09-25 12:31:36,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:31:36,571 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 12:31:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:36,586 INFO L225 Difference]: With dead ends: 157 [2020-09-25 12:31:36,587 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 12:31:36,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:31:36,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 12:31:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-09-25 12:31:36,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 12:31:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 12:31:36,654 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-09-25 12:31:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:36,654 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 12:31:36,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:31:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 12:31:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:31:36,657 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:36,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:36,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:31:36,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:36,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-09-25 12:31:36,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:36,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240641256] [2020-09-25 12:31:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:31:36,732 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:31:36,733 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:31:36,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:31:36,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:31:36 BoogieIcfgContainer [2020-09-25 12:31:36,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:31:36,767 INFO L168 Benchmark]: Toolchain (without parser) took 2943.79 ms. Allocated memory was 144.7 MB in the beginning and 229.6 MB in the end (delta: 84.9 MB). Free memory was 99.8 MB in the beginning and 184.0 MB in the end (delta: -84.2 MB). Peak memory consumption was 726.4 kB. Max. memory is 7.1 GB. [2020-09-25 12:31:36,768 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:31:36,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.33 ms. Allocated memory is still 144.7 MB. Free memory was 99.1 MB in the beginning and 88.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:36,771 INFO L168 Benchmark]: Boogie Preprocessor took 138.47 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 88.7 MB in the beginning and 176.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:36,772 INFO L168 Benchmark]: RCFGBuilder took 529.78 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 156.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:36,773 INFO L168 Benchmark]: TraceAbstraction took 1904.01 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 156.5 MB in the beginning and 184.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:36,777 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.33 ms. Allocated memory is still 144.7 MB. Free memory was 99.1 MB in the beginning and 88.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.47 ms. Allocated memory was 144.7 MB in the beginning and 199.8 MB in the end (delta: 55.1 MB). Free memory was 88.7 MB in the beginning and 176.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 529.78 ms. Allocated memory is still 199.8 MB. Free memory was 176.8 MB in the beginning and 156.5 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1904.01 ms. Allocated memory was 199.8 MB in the beginning and 229.6 MB in the end (delta: 29.9 MB). Free memory was 156.5 MB in the beginning and 184.0 MB in the end (delta: -27.5 MB). Peak memory consumption was 2.4 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