/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:10:07,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:10:07,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:10:07,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:10:07,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:10:07,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:10:07,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:10:07,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:10:07,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:10:07,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:10:07,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:10:07,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:10:07,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:10:07,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:10:07,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:10:07,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:10:07,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:10:07,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:10:07,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:10:07,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:10:07,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:10:07,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:10:07,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:10:07,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:10:07,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:10:07,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:10:07,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:10:07,303 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:10:07,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:10:07,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:10:07,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:10:07,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:10:07,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:10:07,310 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:10:07,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:10:07,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:10:07,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:10:07,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:10:07,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:10:07,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:10:07,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:10:07,327 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 01:10:07,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:10:07,376 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:10:07,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:10:07,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:10:07,378 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:10:07,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:10:07,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:10:07,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:10:07,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:10:07,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:10:07,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:10:07,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:10:07,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:10:07,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:10:07,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:10:07,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:10:07,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:10:07,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:10:07,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:10:07,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:10:07,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:10:07,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:10:07,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:10:07,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:10:07,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:10:07,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:10:07,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:10:07,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:10:07,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:10:07,385 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 01:10:07,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:10:07,890 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:10:07,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:10:07,900 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:10:07,901 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:10:07,902 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_3-1.i [2020-09-25 01:10:08,004 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c179f193/0f5c455e65df4e0e83d50b114d2f5794/FLAG8e24a9a5b [2020-09-25 01:10:08,564 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:10:08,565 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_3-1.i [2020-09-25 01:10:08,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c179f193/0f5c455e65df4e0e83d50b114d2f5794/FLAG8e24a9a5b [2020-09-25 01:10:08,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c179f193/0f5c455e65df4e0e83d50b114d2f5794 [2020-09-25 01:10:08,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:10:08,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:10:08,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:08,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:10:08,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:10:08,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:08" (1/1) ... [2020-09-25 01:10:08,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a73c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:08, skipping insertion in model container [2020-09-25 01:10:08,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:08" (1/1) ... [2020-09-25 01:10:08,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:10:08,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:10:09,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:09,186 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:10:09,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:10:09,228 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:10:09,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09 WrapperNode [2020-09-25 01:10:09,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:10:09,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:10:09,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:10:09,230 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:10:09,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (1/1) ... [2020-09-25 01:10:09,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:10:09,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:10:09,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:10:09,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:10:09,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (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 01:10:09,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:10:09,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:10:09,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:10:09,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:10:09,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:10:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:10:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:10:09,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:10:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:10:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:10:09,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:10:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:10:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:10:09,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:10:09,745 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:10:09,746 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 01:10:09,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:09 BoogieIcfgContainer [2020-09-25 01:10:09,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:10:09,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:10:09,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:10:09,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:10:09,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:08" (1/3) ... [2020-09-25 01:10:09,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:09, skipping insertion in model container [2020-09-25 01:10:09,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:09" (2/3) ... [2020-09-25 01:10:09,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69eb788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:09, skipping insertion in model container [2020-09-25 01:10:09,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:09" (3/3) ... [2020-09-25 01:10:09,787 INFO L109 eAbstractionObserver]: Analyzing ICFG array_3-1.i [2020-09-25 01:10:09,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:10:09,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:10:09,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:10:09,862 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:10:09,863 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:10:09,863 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:10:09,863 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:10:09,863 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:10:09,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:10:09,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:10:09,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:10:09,885 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-09-25 01:10:09,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 01:10:09,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:09,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:09,895 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:09,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:09,902 INFO L82 PathProgramCache]: Analyzing trace with hash -2145994368, now seen corresponding path program 1 times [2020-09-25 01:10:09,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:09,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210595277] [2020-09-25 01:10:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:10,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:10,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:10,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 01:10:10,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:10,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 01:10:10,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 01:10:10,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:10:10,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:10,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:10,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:10,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:10:10,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:10,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:10,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:10,469 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 01:10:10,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210595277] [2020-09-25 01:10:10,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:10,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:10:10,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50864573] [2020-09-25 01:10:10,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:10:10,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:10,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:10:10,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:10:10,511 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 3 states. [2020-09-25 01:10:10,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:10,650 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-09-25 01:10:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:10:10,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-25 01:10:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:10,664 INFO L225 Difference]: With dead ends: 61 [2020-09-25 01:10:10,665 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 01:10:10,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:10:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 01:10:10,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 01:10:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 01:10:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-09-25 01:10:10,716 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-09-25 01:10:10,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:10,716 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-09-25 01:10:10,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:10:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-09-25 01:10:10,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 01:10:10,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:10,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:10:10,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:10:10,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:10,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash 2141881988, now seen corresponding path program 1 times [2020-09-25 01:10:10,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:10,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358597650] [2020-09-25 01:10:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:10,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:10,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:10,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 01:10:10,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:10:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-09-25 01:10:10,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 01:10:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 01:10:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 01:10:10,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:11,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:11,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:11,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 01:10:11,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:11,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:10:11,067 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 01:10:11,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358597650] [2020-09-25 01:10:11,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:11,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 01:10:11,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810522668] [2020-09-25 01:10:11,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 01:10:11,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:11,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 01:10:11,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 01:10:11,072 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-09-25 01:10:11,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:11,275 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-09-25 01:10:11,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 01:10:11,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-25 01:10:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:11,278 INFO L225 Difference]: With dead ends: 61 [2020-09-25 01:10:11,279 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 01:10:11,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 01:10:11,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 36. [2020-09-25 01:10:11,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 01:10:11,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-09-25 01:10:11,298 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 19 [2020-09-25 01:10:11,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:11,300 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-09-25 01:10:11,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 01:10:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-09-25 01:10:11,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 01:10:11,303 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:10:11,303 INFO L422 BasicCegarLoop]: trace histogram [2, 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 01:10:11,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:10:11,304 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:10:11,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:10:11,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1756759471, now seen corresponding path program 1 times [2020-09-25 01:10:11,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:10:11,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520566421] [2020-09-25 01:10:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:10:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:11,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:11,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 01:10:11,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:10:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-09-25 01:10:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 01:10:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-25 01:10:11,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 01:10:11,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:10:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:10:12,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:10:12,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:10:12,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:10:12,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:10:12,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 01:10:12,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:10:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:10:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:10:12,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:10:12,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 01:10:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 01:10:12,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520566421] [2020-09-25 01:10:12,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:10:12,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:10:12,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311015299] [2020-09-25 01:10:12,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:10:12,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:10:12,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:10:12,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:10:12,033 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 8 states. [2020-09-25 01:10:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:10:12,178 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-09-25 01:10:12,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:10:12,178 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 01:10:12,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:10:12,179 INFO L225 Difference]: With dead ends: 41 [2020-09-25 01:10:12,179 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:10:12,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 01:10:12,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:10:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:10:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:10:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:10:12,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-09-25 01:10:12,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:10:12,182 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:10:12,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:10:12,182 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:10:12,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:10:12,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:10:12,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:10:12,261 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,261 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,261 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,262 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 01:10:12,262 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,262 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,262 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:10:12,262 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:10:12,262 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point L17-4(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2020-09-25 01:10:12,263 INFO L268 CegarLoopResult]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2020-09-25 01:10:12,264 INFO L268 CegarLoopResult]: For program point L17-6(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,265 INFO L268 CegarLoopResult]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2020-09-25 01:10:12,265 INFO L268 CegarLoopResult]: For program point L17-7(line 17) no Hoare annotation was computed. [2020-09-25 01:10:12,265 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-25 01:10:12,265 INFO L264 CegarLoopResult]: At program point L17-8(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2020-09-25 01:10:12,265 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-25 01:10:12,266 INFO L264 CegarLoopResult]: At program point L17-9(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2020-09-25 01:10:12,266 INFO L271 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: true [2020-09-25 01:10:12,266 INFO L268 CegarLoopResult]: For program point L13-7(lines 13 15) no Hoare annotation was computed. [2020-09-25 01:10:12,267 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 23) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 01:10:12,268 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 01:10:12,268 INFO L268 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-09-25 01:10:12,268 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 01:10:12,269 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-25 01:10:12,271 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-25 01:10:12,271 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 01:10:12,271 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-25 01:10:12,272 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 01:10:12,272 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 01:10:12,272 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 01:10:12,272 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 01:10:12,272 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 01:10:12,272 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 01:10:12,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:10:12 BoogieIcfgContainer [2020-09-25 01:10:12,301 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:10:12,308 INFO L168 Benchmark]: Toolchain (without parser) took 3391.67 ms. Allocated memory was 146.8 MB in the beginning and 234.4 MB in the end (delta: 87.6 MB). Free memory was 103.2 MB in the beginning and 124.6 MB in the end (delta: -21.4 MB). Peak memory consumption was 66.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:12,309 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:10:12,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.38 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:12,311 INFO L168 Benchmark]: Boogie Preprocessor took 126.86 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.3 MB in the beginning and 180.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:12,321 INFO L168 Benchmark]: RCFGBuilder took 395.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 166.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:12,324 INFO L168 Benchmark]: TraceAbstraction took 2537.95 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 124.6 MB in the end (delta: 41.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:10:12,333 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.38 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 92.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.86 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 92.3 MB in the beginning and 180.8 MB in the end (delta: -88.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 395.66 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 166.2 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2537.95 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 165.6 MB in the beginning and 124.6 MB in the end (delta: 41.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1023 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 39 SDslu, 158 SDs, 0 SdLazy, 174 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 11 PreInvPairs, 16 NumberOfFragments, 23 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 3054 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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 proved your program to be correct! Received shutdown request...