/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/array-lopstr16/motivex.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:20:40,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:20:40,191 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:20:40,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:20:40,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:20:40,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:20:40,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:20:40,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:20:40,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:20:40,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:20:40,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:20:40,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:20:40,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:20:40,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:20:40,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:20:40,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:20:40,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:20:40,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:20:40,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:20:40,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:20:40,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:20:40,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:20:40,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:20:40,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:20:40,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:20:40,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:20:40,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:20:40,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:20:40,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:20:40,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:20:40,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:20:40,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:20:40,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:20:40,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:20:40,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:20:40,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:20:40,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:20:40,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:20:40,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:20:40,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:20:40,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:20:40,276 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 10:20:40,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:20:40,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:20:40,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:20:40,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:20:40,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:20:40,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:20:40,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:20:40,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:20:40,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:20:40,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:20:40,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:20:40,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:20:40,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:20:40,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:20:40,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:20:40,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:20:40,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:20:40,332 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:20:40,332 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:20:40,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:20:40,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:20:40,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:20:40,333 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:20:40,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:20:40,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:20:40,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:20:40,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:20:40,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:20:40,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:20:40,337 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 10:20:40,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:20:40,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:20:40,754 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:20:40,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:20:40,759 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:20:40,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-12 10:20:40,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c4afe305/4a23af06dbe842c48a7a1fedee3369c5/FLAG95143ed0b [2020-10-12 10:20:41,490 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:20:41,492 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-lopstr16/motivex.i [2020-10-12 10:20:41,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c4afe305/4a23af06dbe842c48a7a1fedee3369c5/FLAG95143ed0b [2020-10-12 10:20:41,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c4afe305/4a23af06dbe842c48a7a1fedee3369c5 [2020-10-12 10:20:41,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:20:41,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:20:41,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:20:41,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:20:41,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:20:41,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:20:41" (1/1) ... [2020-10-12 10:20:41,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5783693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:41, skipping insertion in model container [2020-10-12 10:20:41,774 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:20:41" (1/1) ... [2020-10-12 10:20:41,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:20:41,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:20:42,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:20:42,438 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:20:42,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:20:42,788 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:20:42,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42 WrapperNode [2020-10-12 10:20:42,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:20:42,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:20:42,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:20:42,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:20:42,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (1/1) ... [2020-10-12 10:20:42,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:20:42,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:20:42,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:20:42,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:20:42,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (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 10:20:43,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:20:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:20:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:20:43,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:20:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:20:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:20:43,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2020-10-12 10:20:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:20:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:20:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:20:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:20:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:20:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:20:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:20:43,774 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:20:43,775 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 10:20:43,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:20:43 BoogieIcfgContainer [2020-10-12 10:20:43,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:20:43,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:20:43,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:20:43,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:20:43,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:20:41" (1/3) ... [2020-10-12 10:20:43,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c77cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:20:43, skipping insertion in model container [2020-10-12 10:20:43,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:20:42" (2/3) ... [2020-10-12 10:20:43,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c77cf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:20:43, skipping insertion in model container [2020-10-12 10:20:43,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:20:43" (3/3) ... [2020-10-12 10:20:43,800 INFO L109 eAbstractionObserver]: Analyzing ICFG motivex.i [2020-10-12 10:20:43,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:20:43,829 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:20:43,854 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:20:43,889 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:20:43,889 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:20:43,890 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:20:43,890 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:20:43,890 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:20:43,890 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:20:43,890 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:20:43,890 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:20:43,923 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-12 10:20:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 10:20:43,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:20:43,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:20:43,937 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:20:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:20:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1583089931, now seen corresponding path program 1 times [2020-10-12 10:20:43,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:20:43,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137725571] [2020-10-12 10:20:43,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:20:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:20:44,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:44,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:44,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:44,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:44,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:20:44,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 10:20:44,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 10:20:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-12 10:20:44,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:20:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 10:20:44,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 10:20:44,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 10:20:44,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 10:20:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:20:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:20:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:45,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:20:45,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:20:45,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:20:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 10:20:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:20:45,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 10:20:45,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:20:45,050 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 10:20:45,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137725571] [2020-10-12 10:20:45,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:20:45,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:20:45,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053271134] [2020-10-12 10:20:45,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:20:45,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:20:45,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:20:45,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:20:45,081 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 7 states. [2020-10-12 10:20:45,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:20:45,773 INFO L93 Difference]: Finished difference Result 76 states and 102 transitions. [2020-10-12 10:20:45,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 10:20:45,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-12 10:20:45,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:20:45,787 INFO L225 Difference]: With dead ends: 76 [2020-10-12 10:20:45,787 INFO L226 Difference]: Without dead ends: 35 [2020-10-12 10:20:45,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-12 10:20:45,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-12 10:20:45,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-10-12 10:20:45,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 10:20:45,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-10-12 10:20:45,857 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 16 [2020-10-12 10:20:45,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:20:45,858 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-10-12 10:20:45,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:20:45,858 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-10-12 10:20:45,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-12 10:20:45,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:20:45,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:20:45,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:20:45,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:20:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:20:45,863 INFO L82 PathProgramCache]: Analyzing trace with hash 2031048202, now seen corresponding path program 1 times [2020-10-12 10:20:45,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:20:45,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79093457] [2020-10-12 10:20:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:20:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:20:45,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:20:45,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79093457] [2020-10-12 10:20:45,935 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-12 10:20:45,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:20:45,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-12 10:20:45,936 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-12 10:20:45,937 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:20:45,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:20:45,995 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:20:45,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:20:45 BoogieIcfgContainer [2020-10-12 10:20:45,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:20:46,005 INFO L168 Benchmark]: Toolchain (without parser) took 4242.46 ms. Allocated memory was 144.7 MB in the beginning and 301.5 MB in the end (delta: 156.8 MB). Free memory was 100.6 MB in the beginning and 255.8 MB in the end (delta: -155.2 MB). Peak memory consumption was 123.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,006 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,008 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1029.67 ms. Allocated memory was 144.7 MB in the beginning and 243.3 MB in the end (delta: 98.6 MB). Free memory was 100.4 MB in the beginning and 210.8 MB in the end (delta: -110.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,010 INFO L168 Benchmark]: Boogie Preprocessor took 121.25 ms. Allocated memory is still 243.3 MB. Free memory was 210.8 MB in the beginning and 208.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,014 INFO L168 Benchmark]: RCFGBuilder took 867.73 ms. Allocated memory is still 243.3 MB. Free memory was 208.3 MB in the beginning and 192.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,016 INFO L168 Benchmark]: TraceAbstraction took 2209.75 ms. Allocated memory was 243.3 MB in the beginning and 301.5 MB in the end (delta: 58.2 MB). Free memory was 191.0 MB in the beginning and 255.8 MB in the end (delta: -64.9 MB). Peak memory consumption was 114.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:20:46,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 144.7 MB. Free memory was 119.4 MB in the beginning and 119.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1029.67 ms. Allocated memory was 144.7 MB in the beginning and 243.3 MB in the end (delta: 98.6 MB). Free memory was 100.4 MB in the beginning and 210.8 MB in the end (delta: -110.4 MB). Peak memory consumption was 65.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.25 ms. Allocated memory is still 243.3 MB. Free memory was 210.8 MB in the beginning and 208.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 867.73 ms. Allocated memory is still 243.3 MB. Free memory was 208.3 MB in the beginning and 192.0 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2209.75 ms. Allocated memory was 243.3 MB in the beginning and 301.5 MB in the end (delta: 58.2 MB). Free memory was 191.0 MB in the beginning and 255.8 MB in the end (delta: -64.9 MB). Peak memory consumption was 114.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 2]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L4-L7] struct S { unsigned short p; unsigned short q; } a[10000]; [L10] unsigned char k; [L11] int i; [L12] i = 0 [L12] COND TRUE i < 1000000 [L14] a[i].p = i [L15] a[i].q = i [L12] i++ [L12] COND FALSE !(i < 1000000) [L17] i = 0 [L17] COND FALSE !(i < 1000000) [L26] i = 0 [L26] COND TRUE i < 1000000 [L28] EXPR a[i].p [L28] EXPR a[i].q [L28] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L28] EXPR a[i].q [L28] EXPR a[i].p [L28] EXPR a[i].p [L28] EXPR a[i].p == a[i].q || a[i].q == a[i].p * a[i].p [L28] CALL __VERIFIER_assert(a[i].p == a[i].q || a[i].q == a[i].p * a[i].p) [L2] COND TRUE !(cond) [L2] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 52 SDslu, 44 SDs, 0 SdLazy, 122 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 1275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...