/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:28:16,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:28:16,120 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:28:16,164 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:28:16,165 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:28:16,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:28:16,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:28:16,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:28:16,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:28:16,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:28:16,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:28:16,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:28:16,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:28:16,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:28:16,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:28:16,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:28:16,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:28:16,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:28:16,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:28:16,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:28:16,212 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:28:16,213 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:28:16,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:28:16,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:28:16,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:28:16,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:28:16,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:28:16,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:28:16,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:28:16,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:28:16,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:28:16,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:28:16,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:28:16,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:28:16,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:28:16,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:28:16,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:28:16,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:28:16,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:28:16,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:28:16,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:28:16,238 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 [2020-09-24 18:28:16,263 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:28:16,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:28:16,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:28:16,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:28:16,265 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:28:16,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:28:16,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:28:16,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:28:16,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:28:16,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:28:16,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:28:16,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:28:16,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:28:16,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:28:16,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:28:16,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:28:16,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:28:16,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:28:16,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:28:16,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:28:16,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:28:16,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:28:16,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:28:16,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:28:16,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:28:16,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:28:16,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:28:16,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:28:16,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:28:16,270 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:28:16,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:28:16,818 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:28:16,822 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:28:16,823 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:28:16,824 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:28:16,825 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-24 18:28:16,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aeef0235/be0647bd6639486db6395dabba2b02ea/FLAG3dafb8fef [2020-09-24 18:28:17,459 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:28:17,460 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_24-1.i [2020-09-24 18:28:17,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aeef0235/be0647bd6639486db6395dabba2b02ea/FLAG3dafb8fef [2020-09-24 18:28:17,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0aeef0235/be0647bd6639486db6395dabba2b02ea [2020-09-24 18:28:17,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:28:17,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:28:17,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:17,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:28:17,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:28:17,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:17" (1/1) ... [2020-09-24 18:28:17,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a098cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:17, skipping insertion in model container [2020-09-24 18:28:17,788 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:28:17" (1/1) ... [2020-09-24 18:28:17,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:28:17,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:28:18,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:18,056 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:28:18,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:28:18,109 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:28:18,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18 WrapperNode [2020-09-24 18:28:18,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:28:18,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:28:18,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:28:18,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:28:18,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,235 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (1/1) ... [2020-09-24 18:28:18,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:28:18,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:28:18,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:28:18,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:28:18,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (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 [2020-09-24 18:28:18,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:28:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:28:18,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 18:28:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printEven [2020-09-24 18:28:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure printOdd [2020-09-24 18:28:18,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:28:18,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:28:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:28:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 18:28:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure printEven [2020-09-24 18:28:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure printOdd [2020-09-24 18:28:18,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:28:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:28:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:28:18,657 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:28:18,657 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 18:28:18,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:18 BoogieIcfgContainer [2020-09-24 18:28:18,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:28:18,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:28:18,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:28:18,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:28:18,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:28:17" (1/3) ... [2020-09-24 18:28:18,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2698026b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:18, skipping insertion in model container [2020-09-24 18:28:18,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:28:18" (2/3) ... [2020-09-24 18:28:18,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2698026b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:28:18, skipping insertion in model container [2020-09-24 18:28:18,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:28:18" (3/3) ... [2020-09-24 18:28:18,673 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-09-24 18:28:18,685 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:28:18,696 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:28:18,720 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:28:18,757 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:28:18,757 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:28:18,757 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:28:18,757 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:28:18,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:28:18,758 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:28:18,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:28:18,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:28:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 18:28:18,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 18:28:18,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:18,791 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] [2020-09-24 18:28:18,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:18,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:18,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1447674201, now seen corresponding path program 1 times [2020-09-24 18:28:18,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:18,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1848371056] [2020-09-24 18:28:18,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:18,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:19,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:28:19,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:19,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 780 [2020-09-24 18:28:19,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:28:19,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:19,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:28:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:19,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:19,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:19,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:28:19,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:19,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:19,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1848371056] [2020-09-24 18:28:19,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:19,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 18:28:19,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820553402] [2020-09-24 18:28:19,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 18:28:19,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:19,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 18:28:19,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 18:28:19,864 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-24 18:28:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:20,046 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2020-09-24 18:28:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 18:28:20,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-24 18:28:20,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:20,061 INFO L225 Difference]: With dead ends: 110 [2020-09-24 18:28:20,062 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:28:20,066 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 [2020-09-24 18:28:20,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:28:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 18:28:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 18:28:20,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2020-09-24 18:28:20,119 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 26 [2020-09-24 18:28:20,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:20,120 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2020-09-24 18:28:20,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 18:28:20,120 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2020-09-24 18:28:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 18:28:20,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:20,122 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] [2020-09-24 18:28:20,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:28:20,123 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:20,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:20,123 INFO L82 PathProgramCache]: Analyzing trace with hash 1779758876, now seen corresponding path program 1 times [2020-09-24 18:28:20,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:20,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967536309] [2020-09-24 18:28:20,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:20,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:20,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:28:20,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:28:20,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-09-24 18:28:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:28:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:28:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 18:28:20,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:20,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:20,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:20,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:20,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:28:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:28:20,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967536309] [2020-09-24 18:28:20,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:20,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 18:28:20,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966168423] [2020-09-24 18:28:20,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:28:20,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:20,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:28:20,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:28:20,804 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand 6 states. [2020-09-24 18:28:21,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:21,065 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-09-24 18:28:21,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:28:21,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 18:28:21,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:21,068 INFO L225 Difference]: With dead ends: 125 [2020-09-24 18:28:21,069 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 18:28:21,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:28:21,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 18:28:21,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 60. [2020-09-24 18:28:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 18:28:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2020-09-24 18:28:21,086 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 26 [2020-09-24 18:28:21,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:21,086 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2020-09-24 18:28:21,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:28:21,087 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2020-09-24 18:28:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:28:21,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:21,088 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] [2020-09-24 18:28:21,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:28:21,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:21,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:21,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1567937856, now seen corresponding path program 1 times [2020-09-24 18:28:21,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:21,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133180646] [2020-09-24 18:28:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 18:28:21,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:21,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-24 18:28:21,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:28:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 18:28:21,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:28:21,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:21,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:21,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:21,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:21,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:21,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:21,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:28:21,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:21,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:21,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:21,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:21,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:28:21,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133180646] [2020-09-24 18:28:21,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:21,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:28:21,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953111306] [2020-09-24 18:28:21,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:28:21,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:21,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:28:21,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:28:21,558 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand 10 states. [2020-09-24 18:28:21,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:21,967 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-09-24 18:28:21,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:28:21,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-09-24 18:28:21,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:21,969 INFO L225 Difference]: With dead ends: 68 [2020-09-24 18:28:21,969 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:28:21,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-09-24 18:28:21,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:28:21,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-09-24 18:28:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 18:28:21,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-24 18:28:21,980 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 33 [2020-09-24 18:28:21,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:21,980 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-24 18:28:21,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:28:21,980 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-24 18:28:21,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 18:28:21,982 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:28:21,982 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] [2020-09-24 18:28:21,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:28:21,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:28:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:28:21,983 INFO L82 PathProgramCache]: Analyzing trace with hash -741681537, now seen corresponding path program 1 times [2020-09-24 18:28:21,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:28:21,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181056584] [2020-09-24 18:28:21,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:28:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:22,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:24,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:24,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 18:28:24,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:28:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2951 [2020-09-24 18:28:24,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:28:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-24 18:28:24,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:28:24,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:28:25,187 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 7 [2020-09-24 18:28:25,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:28:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:28:25,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:28:25,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:28:25,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:28:25,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:28:25,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:28:25,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:28:25,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:28:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:28:25,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:28:25,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:28:25,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:28:25,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181056584] [2020-09-24 18:28:25,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:28:25,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 18:28:25,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704581746] [2020-09-24 18:28:25,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 18:28:25,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:28:25,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 18:28:25,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:28:25,251 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 10 states. [2020-09-24 18:28:25,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:28:25,649 INFO L93 Difference]: Finished difference Result 66 states and 70 transitions. [2020-09-24 18:28:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:28:25,650 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-09-24 18:28:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:28:25,651 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:28:25,651 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 18:28:25,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-24 18:28:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 18:28:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 18:28:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 18:28:25,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 18:28:25,656 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2020-09-24 18:28:25,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:28:25,656 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 18:28:25,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 18:28:25,656 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 18:28:25,657 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 18:28:25,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:28:25,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 18:28:25,858 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,858 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,858 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,859 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|)) [2020-09-24 18:28:25,859 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,859 INFO L271 CegarLoopResult]: At program point printOddENTRY(lines 7 9) the Hoare annotation is: true [2020-09-24 18:28:25,859 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (not (let ((.cse0 (+ |printOdd_#in~i| 1))) (<= .cse0 (* 2 (div .cse0 2))))) (<= (+ (* 2 (div printOdd_~i 2)) 1) printOdd_~i)) [2020-09-24 18:28:25,859 INFO L268 CegarLoopResult]: For program point printOddFINAL(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:28:25,860 INFO L268 CegarLoopResult]: For program point printOddEXIT(lines 7 9) no Hoare annotation was computed. [2020-09-24 18:28:25,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,860 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 18:28:25,860 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 18:28:25,860 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 18:28:25,861 INFO L268 CegarLoopResult]: For program point printEvenEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-24 18:28:25,861 INFO L271 CegarLoopResult]: At program point printEvenENTRY(lines 4 6) the Hoare annotation is: true [2020-09-24 18:28:25,861 INFO L268 CegarLoopResult]: For program point printEvenFINAL(lines 4 6) no Hoare annotation was computed. [2020-09-24 18:28:25,862 INFO L264 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: (or (not (<= 0 (+ (* 2 (div (* |printEven_#in~i| (- 1)) 2)) |printEven_#in~i|))) (<= printEven_~i (* 2 (div printEven_~i 2)))) [2020-09-24 18:28:25,862 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 36) no Hoare annotation was computed. [2020-09-24 18:28:25,862 INFO L268 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-09-24 18:28:25,864 INFO L268 CegarLoopResult]: For program point L23-1(lines 23 26) no Hoare annotation was computed. [2020-09-24 18:28:25,864 INFO L268 CegarLoopResult]: For program point L23-2(line 23) no Hoare annotation was computed. [2020-09-24 18:28:25,864 INFO L268 CegarLoopResult]: For program point L23-4(line 23) no Hoare annotation was computed. [2020-09-24 18:28:25,864 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-24 18:28:25,865 INFO L264 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (and (let ((.cse0 (+ (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)) 1))) (<= .cse0 (* 2 (div .cse0 2)))) (let ((.cse1 (+ |main_#t~mem8| 1))) (<= .cse1 (* 2 (div .cse1 2))))) [2020-09-24 18:28:25,865 INFO L268 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-09-24 18:28:25,865 INFO L268 CegarLoopResult]: For program point L28-2(lines 28 34) no Hoare annotation was computed. [2020-09-24 18:28:25,865 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-24 18:28:25,866 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-24 18:28:25,866 INFO L271 CegarLoopResult]: At program point L28-5(lines 28 34) the Hoare annotation is: true [2020-09-24 18:28:25,866 INFO L268 CegarLoopResult]: For program point L28-6(lines 28 34) no Hoare annotation was computed. [2020-09-24 18:28:25,866 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 18:28:25,866 INFO L268 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-09-24 18:28:25,867 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 18:28:25,867 INFO L268 CegarLoopResult]: For program point L16-4(line 16) no Hoare annotation was computed. [2020-09-24 18:28:25,867 INFO L268 CegarLoopResult]: For program point L16-5(line 16) no Hoare annotation was computed. [2020-09-24 18:28:25,867 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 18:28:25,867 INFO L271 CegarLoopResult]: At program point L16-6(lines 16 19) the Hoare annotation is: true [2020-09-24 18:28:25,867 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 18:28:25,868 INFO L268 CegarLoopResult]: For program point L16-7(lines 16 19) no Hoare annotation was computed. [2020-09-24 18:28:25,868 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 18:28:25,868 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 0 (+ (* 2 (div (* |main_#t~mem5| (- 1)) 2)) |main_#t~mem5|)) (<= 0 (let ((.cse0 (select (select |#memory_int| |main_~#array~0.base|) (+ (* main_~i~0 4) |main_~#array~0.offset|)))) (+ .cse0 (* 2 (div (* .cse0 (- 1)) 2)))))) [2020-09-24 18:28:25,868 INFO L268 CegarLoopResult]: For program point L25-2(line 25) no Hoare annotation was computed. [2020-09-24 18:28:25,868 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 27) no Hoare annotation was computed. [2020-09-24 18:28:25,869 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-24 18:28:25,869 INFO L268 CegarLoopResult]: For program point L21-4(line 21) no Hoare annotation was computed. [2020-09-24 18:28:25,870 INFO L271 CegarLoopResult]: At program point L21-5(lines 21 27) the Hoare annotation is: true [2020-09-24 18:28:25,870 INFO L268 CegarLoopResult]: For program point L21-6(lines 21 27) no Hoare annotation was computed. [2020-09-24 18:28:25,870 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 36) no Hoare annotation was computed. [2020-09-24 18:28:25,870 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 18:28:25,870 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 36) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L30-4(line 30) no Hoare annotation was computed. [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 18:28:25,871 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 18:28:25,872 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-24 18:28:25,872 INFO L268 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-09-24 18:28:25,872 INFO L268 CegarLoopResult]: For program point L14-2(line 14) no Hoare annotation was computed. [2020-09-24 18:28:25,872 INFO L268 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-09-24 18:28:25,873 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(line 3) the Hoare annotation is: true [2020-09-24 18:28:25,873 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(line 3) no Hoare annotation was computed. [2020-09-24 18:28:25,873 INFO L268 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-09-24 18:28:25,873 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-09-24 18:28:25,873 INFO L268 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-09-24 18:28:25,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:28:25 BoogieIcfgContainer [2020-09-24 18:28:25,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:28:25,896 INFO L168 Benchmark]: Toolchain (without parser) took 8126.40 ms. Allocated memory was 139.5 MB in the beginning and 276.3 MB in the end (delta: 136.8 MB). Free memory was 102.8 MB in the beginning and 93.9 MB in the end (delta: 8.9 MB). Peak memory consumption was 145.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:25,898 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:28:25,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.32 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:25,901 INFO L168 Benchmark]: Boogie Preprocessor took 131.39 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:25,908 INFO L168 Benchmark]: RCFGBuilder took 420.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 161.5 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:25,910 INFO L168 Benchmark]: TraceAbstraction took 7228.62 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 161.5 MB in the beginning and 93.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 141.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:28:25,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.32 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 91.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.39 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 181.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.65 ms. Allocated memory is still 202.9 MB. Free memory was 181.2 MB in the beginning and 161.5 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7228.62 ms. Allocated memory was 202.9 MB in the beginning and 276.3 MB in the end (delta: 73.4 MB). Free memory was 161.5 MB in the beginning and 93.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 141.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 225 SDtfs, 92 SDslu, 686 SDs, 0 SdLazy, 611 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 4 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 27 PreInvPairs, 35 NumberOfFragments, 141 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 151 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 12092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...