/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:43:08,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:43:08,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:43:08,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:43:08,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:43:08,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:43:08,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:43:08,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:43:08,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:43:08,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:43:08,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:43:08,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:43:08,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:43:08,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:43:08,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:43:08,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:43:08,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:43:08,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:43:08,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:43:08,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:43:08,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:43:08,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:43:08,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:43:08,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:43:08,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:43:08,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:43:08,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:43:08,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:43:08,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:43:08,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:43:08,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:43:08,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:43:08,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:43:08,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:43:08,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:43:08,211 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:43:08,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:43:08,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:43:08,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:43:08,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:43:08,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:43:08,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 15:43:08,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:43:08,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:43:08,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:43:08,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:43:08,241 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:43:08,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:43:08,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:43:08,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:43:08,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:43:08,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:43:08,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:43:08,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:43:08,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:43:08,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:43:08,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:43:08,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:43:08,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:43:08,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:43:08,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:43:08,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:43:08,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:43:08,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:43:08,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:43:08,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:43:08,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:43:08,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:43:08,551 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:43:08,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:43:08,556 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:43:08,556 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:43:08,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test05.c [2020-10-12 15:43:08,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca5bd2546/ff6b185c95f6462b9a7523f4ae3ab0b6/FLAGa13fdf35c [2020-10-12 15:43:09,126 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:43:09,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test05.c [2020-10-12 15:43:09,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca5bd2546/ff6b185c95f6462b9a7523f4ae3ab0b6/FLAGa13fdf35c [2020-10-12 15:43:09,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ca5bd2546/ff6b185c95f6462b9a7523f4ae3ab0b6 [2020-10-12 15:43:09,504 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:43:09,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:43:09,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:09,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:43:09,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:43:09,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71b7fd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09, skipping insertion in model container [2020-10-12 15:43:09,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:43:09,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:43:09,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:09,759 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:43:09,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:43:09,790 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:43:09,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09 WrapperNode [2020-10-12 15:43:09,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:43:09,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:43:09,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:43:09,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:43:09,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... [2020-10-12 15:43:09,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:43:09,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:43:09,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:43:09,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:43:09,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:43:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:43:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:43:09,970 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-10-12 15:43:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-10-12 15:43:09,971 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:43:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:43:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-10-12 15:43:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:43:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:43:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:43:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:43:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:43:10,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:43:10,275 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 15:43:10,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:10 BoogieIcfgContainer [2020-10-12 15:43:10,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:43:10,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:43:10,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:43:10,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:43:10,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:43:09" (1/3) ... [2020-10-12 15:43:10,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc9a9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:10, skipping insertion in model container [2020-10-12 15:43:10,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:43:09" (2/3) ... [2020-10-12 15:43:10,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc9a9c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:43:10, skipping insertion in model container [2020-10-12 15:43:10,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:43:10" (3/3) ... [2020-10-12 15:43:10,294 INFO L109 eAbstractionObserver]: Analyzing ICFG test05.c [2020-10-12 15:43:10,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:43:10,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:43:10,334 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:43:10,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:43:10,366 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:43:10,366 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:43:10,366 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:43:10,367 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:43:10,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:43:10,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:43:10,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:43:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-12 15:43:10,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-12 15:43:10,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:10,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:43:10,398 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:10,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:10,405 INFO L82 PathProgramCache]: Analyzing trace with hash -685779266, now seen corresponding path program 1 times [2020-10-12 15:43:10,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:10,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260893012] [2020-10-12 15:43:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:10,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:10,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:10,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 15:43:10,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:10,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 15:43:10,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:10,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:43:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-12 15:43:11,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:11,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:11,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:11,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:11,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:11,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 15:43:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:43:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:11,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:11,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 15:43:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:43:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 15:43:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:43:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:43:11,119 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260893012] [2020-10-12 15:43:11,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:11,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:43:11,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550550636] [2020-10-12 15:43:11,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:43:11,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:11,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:43:11,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:43:11,148 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 7 states. [2020-10-12 15:43:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:11,403 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-10-12 15:43:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 15:43:11,405 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-10-12 15:43:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:11,417 INFO L225 Difference]: With dead ends: 36 [2020-10-12 15:43:11,417 INFO L226 Difference]: Without dead ends: 21 [2020-10-12 15:43:11,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:43:11,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-12 15:43:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-12 15:43:11,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 15:43:11,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-10-12 15:43:11,491 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2020-10-12 15:43:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:11,491 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-10-12 15:43:11,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:43:11,492 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-10-12 15:43:11,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 15:43:11,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:11,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:43:11,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:43:11,494 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:11,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:11,494 INFO L82 PathProgramCache]: Analyzing trace with hash 636648720, now seen corresponding path program 1 times [2020-10-12 15:43:11,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:11,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536249748] [2020-10-12 15:43:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:11,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-12 15:43:11,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:11,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 15:43:11,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:43:11,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 15:43:11,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:43:11,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:12,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:12,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:12,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:12,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:12,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:12,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-12 15:43:12,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:12,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:12,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:12,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:12,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:43:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:12,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:12,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:43:12,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:12,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:43:12,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:12,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:43:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:12,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 15:43:12,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:12,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:43:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:12,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:12,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:12,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:12,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:12,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:43:12,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:12,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:12,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:12,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:43:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:43:12,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536249748] [2020-10-12 15:43:12,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:12,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 15:43:12,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516682909] [2020-10-12 15:43:12,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 15:43:12,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:12,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 15:43:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 15:43:12,231 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-10-12 15:43:12,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:12,431 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-10-12 15:43:12,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 15:43:12,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-12 15:43:12,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:12,434 INFO L225 Difference]: With dead ends: 23 [2020-10-12 15:43:12,434 INFO L226 Difference]: Without dead ends: 21 [2020-10-12 15:43:12,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:43:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-12 15:43:12,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-12 15:43:12,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-12 15:43:12,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2020-10-12 15:43:12,442 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 19 [2020-10-12 15:43:12,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:12,443 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2020-10-12 15:43:12,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 15:43:12,443 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2020-10-12 15:43:12,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-12 15:43:12,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:43:12,445 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] [2020-10-12 15:43:12,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:43:12,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:43:12,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:43:12,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1738724303, now seen corresponding path program 1 times [2020-10-12 15:43:12,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:43:12,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678591059] [2020-10-12 15:43:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:43:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:13,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:13,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 15:43:13,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:13,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-12 15:43:13,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:43:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:43:13,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 15:43:13,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:13,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:43:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:13,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:13,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:13,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:13,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:13,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:43:13,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:43:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:43:13,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:43:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:13,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:43:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:13,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:13,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 15:43:13,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:13,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 15:43:13,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:13,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 15:43:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:43:13,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 15:43:13,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:13,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-12 15:43:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:43:13,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:43:13,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:43:13,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:43:13,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:43:13,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:43:13,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:43:13,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:43:13,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:43:13,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:43:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:43:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:43:13,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678591059] [2020-10-12 15:43:13,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:43:13,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 15:43:13,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938466775] [2020-10-12 15:43:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:43:13,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:43:13,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:43:13,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:43:13,729 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 11 states. [2020-10-12 15:43:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:43:14,095 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-10-12 15:43:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:43:14,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-12 15:43:14,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:43:14,096 INFO L225 Difference]: With dead ends: 21 [2020-10-12 15:43:14,096 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 15:43:14,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:43:14,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 15:43:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 15:43:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 15:43:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 15:43:14,098 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-10-12 15:43:14,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:43:14,098 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 15:43:14,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:43:14,099 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 15:43:14,099 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 15:43:14,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:43:14,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 15:43:14,250 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:14,251 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-12 15:43:14,251 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:14,251 INFO L264 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |f_#in~a| f_~a) (= |#memory_int| |old(#memory_int)|) (= |f_#in~p2.base| f_~p2.base) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= f_~p1.offset |f_#in~p1.offset|) (= |f_#in~p1.base| f_~p1.base) (= f_~p2.offset |f_#in~p2.offset|)) [2020-10-12 15:43:14,252 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-10-12 15:43:14,252 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-12 15:43:14,252 INFO L268 CegarLoopResult]: For program point fEXIT(lines 11 18) no Hoare annotation was computed. [2020-10-12 15:43:14,252 INFO L264 CegarLoopResult]: At program point fENTRY(lines 11 18) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-12 15:43:14,252 INFO L268 CegarLoopResult]: For program point fFINAL(lines 11 18) no Hoare annotation was computed. [2020-10-12 15:43:14,252 INFO L268 CegarLoopResult]: For program point gEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-12 15:43:14,253 INFO L268 CegarLoopResult]: For program point gFINAL(lines 4 9) no Hoare annotation was computed. [2020-10-12 15:43:14,253 INFO L264 CegarLoopResult]: At program point gENTRY(lines 4 9) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2020-10-12 15:43:14,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 15:43:14,253 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 15:43:14,253 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 15:43:14,253 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 15:43:14,254 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (let ((.cse0 (select (select |#memory_$Pointer$.base| |main_~#p2~0.base|) |main_~#p2~0.offset|))) (and (= |main_#t~mem4| 4) (not (= .cse0 |main_~#a~0.base|)) (not (= |main_~#p2~0.base| |main_~#a~0.base|)) (not (= |main_~#p1~0.base| |main_~#a~0.base|)) (not (= .cse0 |main_~#p1~0.base|)))) [2020-10-12 15:43:14,254 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-10-12 15:43:14,254 INFO L268 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2020-10-12 15:43:14,254 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 46) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-10-12 15:43:14,254 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 46) no Hoare annotation was computed. [2020-10-12 15:43:14,255 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 46) no Hoare annotation was computed. [2020-10-12 15:43:14,255 INFO L264 CegarLoopResult]: At program point L39(lines 20 46) the Hoare annotation is: false [2020-10-12 15:43:14,255 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-10-12 15:43:14,255 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-10-12 15:43:14,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:43:14 BoogieIcfgContainer [2020-10-12 15:43:14,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:43:14,271 INFO L168 Benchmark]: Toolchain (without parser) took 4764.55 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 103.0 MB in the beginning and 161.7 MB in the end (delta: -58.7 MB). Peak memory consumption was 50.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,272 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.12 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,274 INFO L168 Benchmark]: Boogie Preprocessor took 107.05 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 179.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,275 INFO L168 Benchmark]: RCFGBuilder took 382.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,276 INFO L168 Benchmark]: TraceAbstraction took 3985.35 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 158.9 MB in the beginning and 161.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:43:14,281 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.12 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 92.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.05 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 179.2 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 382.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 159.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3985.35 ms. Allocated memory was 201.9 MB in the beginning and 248.5 MB in the end (delta: 46.7 MB). Free memory was 158.9 MB in the beginning and 161.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 43.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: 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: 20]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 34 SDslu, 88 SDs, 0 SdLazy, 237 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 99 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 7434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...