/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:21:21,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:21:21,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:21:21,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:21:21,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:21:21,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:21:21,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:21:21,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:21:21,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:21:21,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:21:21,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:21:21,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:21:21,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:21:21,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:21:21,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:21:21,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:21:21,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:21:21,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:21:21,136 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:21:21,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:21:21,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:21:21,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:21:21,150 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:21:21,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:21:21,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:21:21,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:21:21,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:21:21,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:21:21,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:21:21,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:21:21,162 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:21:21,163 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:21:21,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:21:21,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:21:21,166 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:21:21,166 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:21:21,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:21:21,167 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:21:21,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:21:21,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:21:21,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:21:21,171 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 04:21:21,217 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:21:21,217 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:21:21,220 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:21:21,220 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:21:21,220 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:21:21,221 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:21:21,221 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:21:21,221 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:21:21,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:21:21,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:21:21,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:21:21,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:21:21,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:21:21,224 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:21:21,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:21:21,224 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:21:21,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:21:21,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:21:21,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:21:21,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:21:21,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:21:21,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:21:21,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:21:21,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:21:21,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:21:21,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:21:21,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:21:21,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:21:21,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:21:21,230 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:21:21,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:21:21,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:21:21,722 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:21:21,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:21:21,724 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:21:21,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-25 04:21:21,810 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d7ce7ae/6d9c341ec63d460182e6ef8398feb2fc/FLAG1cf04e72d [2020-09-25 04:21:22,389 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:21:22,389 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-25 04:21:22,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d7ce7ae/6d9c341ec63d460182e6ef8398feb2fc/FLAG1cf04e72d [2020-09-25 04:21:22,717 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14d7ce7ae/6d9c341ec63d460182e6ef8398feb2fc [2020-09-25 04:21:22,730 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:21:22,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:21:22,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:21:22,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:21:22,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:21:22,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:21:22" (1/1) ... [2020-09-25 04:21:22,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca632cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:22, skipping insertion in model container [2020-09-25 04:21:22,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:21:22" (1/1) ... [2020-09-25 04:21:22,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:21:22,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:21:22,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:21:23,014 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:21:23,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:21:23,051 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:21:23,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23 WrapperNode [2020-09-25 04:21:23,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:21:23,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:21:23,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:21:23,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:21:23,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (1/1) ... [2020-09-25 04:21:23,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:21:23,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:21:23,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:21:23,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:21:23,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (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 04:21:23,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:21:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:21:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-09-25 04:21:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-25 04:21:23,259 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:21:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:21:23,259 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-25 04:21:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-09-25 04:21:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:21:23,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:21:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:21:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:21:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 04:21:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:21:23,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:21:23,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:21:23,504 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:21:23,505 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:21:23,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:21:23 BoogieIcfgContainer [2020-09-25 04:21:23,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:21:23,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:21:23,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:21:23,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:21:23,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:21:22" (1/3) ... [2020-09-25 04:21:23,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14469568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:21:23, skipping insertion in model container [2020-09-25 04:21:23,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:21:23" (2/3) ... [2020-09-25 04:21:23,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14469568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:21:23, skipping insertion in model container [2020-09-25 04:21:23,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:21:23" (3/3) ... [2020-09-25 04:21:23,521 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-09-25 04:21:23,560 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:21:23,582 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:21:23,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:21:23,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:21:23,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:21:23,644 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:21:23,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:21:23,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:21:23,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:21:23,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:21:23,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:21:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 04:21:23,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-25 04:21:23,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:23,675 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] [2020-09-25 04:21:23,676 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:23,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:23,683 INFO L82 PathProgramCache]: Analyzing trace with hash 474032392, now seen corresponding path program 1 times [2020-09-25 04:21:23,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:23,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1139160271] [2020-09-25 04:21:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:23,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 04:21:24,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 409 [2020-09-25 04:21:24,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:21:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:21:24,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:21:24,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:21:24,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:24,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:21:24,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:24,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:21:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:24,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:24,418 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 04:21:24,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1139160271] [2020-09-25 04:21:24,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:21:24,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:21:24,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153305478] [2020-09-25 04:21:24,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:21:24,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:24,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:21:24,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:21:24,456 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-25 04:21:24,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:24,788 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-09-25 04:21:24,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:21:24,790 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-25 04:21:24,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:24,803 INFO L225 Difference]: With dead ends: 65 [2020-09-25 04:21:24,804 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 04:21:24,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:21:24,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 04:21:24,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-25 04:21:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-25 04:21:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-25 04:21:24,869 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-09-25 04:21:24,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:24,870 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-25 04:21:24,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:21:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-25 04:21:24,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:21:24,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:24,872 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-09-25 04:21:24,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:21:24,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:24,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash 705842607, now seen corresponding path program 1 times [2020-09-25 04:21:24,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:24,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33675900] [2020-09-25 04:21:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:25,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:26,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:26,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 04:21:26,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:26,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 04:21:26,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:26,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 04:21:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:21:26,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 04:21:26,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:21:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:26,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:26,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:21:26,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:26,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:21:26,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:26,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:26,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:21:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:21:26,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33675900] [2020-09-25 04:21:26,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:21:26,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 04:21:26,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765861717] [2020-09-25 04:21:26,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 04:21:26,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:26,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 04:21:26,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 04:21:26,976 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 14 states. [2020-09-25 04:21:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:27,769 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-25 04:21:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 04:21:27,770 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-25 04:21:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:27,771 INFO L225 Difference]: With dead ends: 55 [2020-09-25 04:21:27,771 INFO L226 Difference]: Without dead ends: 49 [2020-09-25 04:21:27,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2020-09-25 04:21:27,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-25 04:21:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-25 04:21:27,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-25 04:21:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-25 04:21:27,783 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 34 [2020-09-25 04:21:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:27,783 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-25 04:21:27,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 04:21:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-25 04:21:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:21:27,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:21:27,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:21:27,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:21:27,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:21:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:21:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash 180793302, now seen corresponding path program 2 times [2020-09-25 04:21:27,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:21:27,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970178472] [2020-09-25 04:21:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:21:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:27,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:30,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:30,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 04:21:30,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:21:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2773 [2020-09-25 04:21:30,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:30,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 04:21:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:21:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:21:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:30,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:21:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:21:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:21:30,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:21:30,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:21:30,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:21:30,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 04:21:30,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:21:30,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:21:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:21:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:21:30,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:21:30,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:21:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:21:30,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970178472] [2020-09-25 04:21:30,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:21:30,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-25 04:21:30,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466821661] [2020-09-25 04:21:30,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 04:21:30,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:21:30,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 04:21:30,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:21:30,818 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 15 states. [2020-09-25 04:21:31,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:21:31,432 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-09-25 04:21:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 04:21:31,432 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 46 [2020-09-25 04:21:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:21:31,433 INFO L225 Difference]: With dead ends: 47 [2020-09-25 04:21:31,433 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:21:31,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=877, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 04:21:31,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:21:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:21:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:21:31,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:21:31,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-09-25 04:21:31,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:21:31,436 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:21:31,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 04:21:31,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:21:31,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:21:31,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:21:31,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:21:31,697 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,697 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,697 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,698 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 04:21:31,698 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,698 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-09-25 04:21:31,698 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse0 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (<= .cse0 11)) (<= .cse1 11)) (or (<= .cse1 20) (not (<= .cse0 20))) (or (not (= .cse0 10)) (= 10 .cse1)))) [2020-09-25 04:21:31,699 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 04:21:31,699 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-09-25 04:21:31,699 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 04:21:31,699 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (let ((.cse2 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|)) (.cse0 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (and (<= .cse0 19) (<= .cse1 20)) (not (<= .cse2 20))) (or (not (= .cse2 10)) (and (= .cse0 10) (= 10 .cse1))))) [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 17) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L10-1(lines 10 17) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-09-25 04:21:31,700 INFO L268 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-09-25 04:21:31,701 INFO L268 CegarLoopResult]: For program point L10-4(lines 9 18) no Hoare annotation was computed. [2020-09-25 04:21:31,701 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,701 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:21:31,701 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:21:31,701 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:21:31,701 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 04:21:31,702 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-09-25 04:21:31,702 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 04:21:31,702 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-09-25 04:21:31,702 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-25 04:21:31,702 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 10) [2020-09-25 04:21:31,702 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point L20(lines 20 26) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point L5-4(line 5) no Hoare annotation was computed. [2020-09-25 04:21:31,703 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-25 04:21:31,704 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (= .cse0 10) (not (= .cse1 10))) (or (<= .cse0 19) (not (<= .cse1 19))))) [2020-09-25 04:21:31,704 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-25 04:21:31,704 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| plus_~p.base) plus_~p.offset)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (<= .cse0 11) (not (= .cse1 10))) (or (<= .cse0 20) (not (<= .cse1 19))))) [2020-09-25 04:21:31,704 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 04:21:31,704 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 04:21:31,704 INFO L268 CegarLoopResult]: For program point L5-2(line 5) no Hoare annotation was computed. [2020-09-25 04:21:31,705 INFO L268 CegarLoopResult]: For program point L5-3(line 5) no Hoare annotation was computed. [2020-09-25 04:21:31,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:21:31 BoogieIcfgContainer [2020-09-25 04:21:31,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:21:31,716 INFO L168 Benchmark]: Toolchain (without parser) took 8982.99 ms. Allocated memory was 142.1 MB in the beginning and 274.7 MB in the end (delta: 132.6 MB). Free memory was 104.1 MB in the beginning and 154.7 MB in the end (delta: -50.6 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-25 04:21:31,717 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:21:31,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.92 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 93.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:21:31,719 INFO L168 Benchmark]: Boogie Preprocessor took 120.14 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 184.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:21:31,720 INFO L168 Benchmark]: RCFGBuilder took 337.05 ms. Allocated memory is still 205.5 MB. Free memory was 184.1 MB in the beginning and 167.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:21:31,721 INFO L168 Benchmark]: TraceAbstraction took 8200.69 ms. Allocated memory was 205.5 MB in the beginning and 274.7 MB in the end (delta: 69.2 MB). Free memory was 167.1 MB in the beginning and 154.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:21:31,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 142.1 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.92 ms. Allocated memory is still 142.1 MB. Free memory was 103.4 MB in the beginning and 93.9 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.14 ms. Allocated memory was 142.1 MB in the beginning and 205.5 MB in the end (delta: 63.4 MB). Free memory was 93.9 MB in the beginning and 184.1 MB in the end (delta: -90.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.05 ms. Allocated memory is still 205.5 MB. Free memory was 184.1 MB in the beginning and 167.7 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8200.69 ms. Allocated memory was 205.5 MB in the beginning and 274.7 MB in the end (delta: 69.2 MB). Free memory was 167.1 MB in the beginning and 154.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 85 SDtfs, 125 SDslu, 278 SDs, 0 SdLazy, 607 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 186 HoareAnnotationTreeSize, 15 FomulaSimplifications, 245 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 12678 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 18/21 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...