/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=SMALLESTAMONGWIDE --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/eca-rers2012/Problem10_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:57,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:57,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:57,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:57,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:57,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:57,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:57,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:57,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:57,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:57,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:57,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:57,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:57,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:57,184 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:57,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:57,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:57,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:57,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:57,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:57,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:57,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:57,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:57,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:57,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:57,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:57,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:57,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:57,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:57,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:57,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:57,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:57,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:57,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:57,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:57,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:57,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:57,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:57,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:57,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:57,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:57,211 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 11:19:57,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:57,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:57,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:57,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:57,240 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:57,241 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:57,241 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:57,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:57,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:57,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:57,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:57,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:57,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:57,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:57,243 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:57,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:57,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:57,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:57,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:57,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:57,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:57,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:57,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:57,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:57,245 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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:57,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:57,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:57,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:57,769 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:57,770 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:57,771 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label46.c [2020-09-25 11:19:57,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220a28247/beac3814fdac44c9b741a2535fbd341d/FLAGf89f58098 [2020-09-25 11:19:58,487 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:58,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label46.c [2020-09-25 11:19:58,502 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220a28247/beac3814fdac44c9b741a2535fbd341d/FLAGf89f58098 [2020-09-25 11:19:58,698 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/220a28247/beac3814fdac44c9b741a2535fbd341d [2020-09-25 11:19:58,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:58,720 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:58,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:58,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:58,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:58,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:58" (1/1) ... [2020-09-25 11:19:58,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763ad0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:58, skipping insertion in model container [2020-09-25 11:19:58,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:58" (1/1) ... [2020-09-25 11:19:58,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:58,800 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:59,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:59,441 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:59,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:59,625 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:59,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59 WrapperNode [2020-09-25 11:19:59,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:59,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:59,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:59,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:59,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (1/1) ... [2020-09-25 11:19:59,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:59,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:59,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:59,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:59,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (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 11:19:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:59,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:59,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:59,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:59,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:20:01,399 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:20:01,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:20:01,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:01 BoogieIcfgContainer [2020-09-25 11:20:01,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:20:01,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:20:01,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:20:01,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:20:01,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:58" (1/3) ... [2020-09-25 11:20:01,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa95cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:01, skipping insertion in model container [2020-09-25 11:20:01,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:59" (2/3) ... [2020-09-25 11:20:01,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa95cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:20:01, skipping insertion in model container [2020-09-25 11:20:01,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:20:01" (3/3) ... [2020-09-25 11:20:01,419 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label46.c [2020-09-25 11:20:01,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:20:01,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:20:01,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:20:01,509 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:20:01,509 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:20:01,510 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:20:01,510 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:20:01,510 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:20:01,510 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:20:01,510 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:20:01,511 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:20:01,544 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:20:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 11:20:01,554 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:01,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:01,556 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:01,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:01,565 INFO L82 PathProgramCache]: Analyzing trace with hash -2055149665, now seen corresponding path program 1 times [2020-09-25 11:20:01,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:01,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17493486] [2020-09-25 11:20:01,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:01,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 11:20:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:20:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-09-25 11:20:02,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:02,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:20:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 11:20:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:20:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:02,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:02,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:02,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:02,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:02,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 11:20:02,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:02,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:02,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:20:02,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:02,694 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 11:20:02,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17493486] [2020-09-25 11:20:02,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:02,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:20:02,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980683382] [2020-09-25 11:20:02,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:20:02,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:02,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:20:02,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:20:02,732 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-25 11:20:05,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:05,457 INFO L93 Difference]: Finished difference Result 1226 states and 1797 transitions. [2020-09-25 11:20:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:20:05,459 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-09-25 11:20:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:05,485 INFO L225 Difference]: With dead ends: 1226 [2020-09-25 11:20:05,485 INFO L226 Difference]: Without dead ends: 707 [2020-09-25 11:20:05,499 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:05,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-25 11:20:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 695. [2020-09-25 11:20:05,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 11:20:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 926 transitions. [2020-09-25 11:20:05,629 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 926 transitions. Word has length 40 [2020-09-25 11:20:05,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:05,630 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 926 transitions. [2020-09-25 11:20:05,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:20:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 926 transitions. [2020-09-25 11:20:05,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 11:20:05,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:05,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:05,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:20:05,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:05,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:05,650 INFO L82 PathProgramCache]: Analyzing trace with hash -639711560, now seen corresponding path program 1 times [2020-09-25 11:20:05,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:05,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817467264] [2020-09-25 11:20:05,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:05,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:05,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:08,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-25 11:20:10,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:20:10,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4957 [2020-09-25 11:20:10,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:20:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:20:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 11:20:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:10,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:20:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:20:10,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:10,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 11:20:10,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:20:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:20:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:20:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:10,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:20:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:20:10,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:20:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:20:10,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 11:20:10,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:20:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 11:20:10,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:20:10,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:20:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:20:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:20:10,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 11:20:10,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:20:11,173 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:20:11,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817467264] [2020-09-25 11:20:11,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:20:11,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:20:11,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547653286] [2020-09-25 11:20:11,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:20:11,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:20:11,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:20:11,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:20:11,180 INFO L87 Difference]: Start difference. First operand 695 states and 926 transitions. Second operand 7 states. [2020-09-25 11:20:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:20:13,191 INFO L93 Difference]: Finished difference Result 1574 states and 2131 transitions. [2020-09-25 11:20:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:20:13,193 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 123 [2020-09-25 11:20:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:20:13,202 INFO L225 Difference]: With dead ends: 1574 [2020-09-25 11:20:13,202 INFO L226 Difference]: Without dead ends: 894 [2020-09-25 11:20:13,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:20:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2020-09-25 11:20:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 852. [2020-09-25 11:20:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2020-09-25 11:20:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1127 transitions. [2020-09-25 11:20:13,281 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1127 transitions. Word has length 123 [2020-09-25 11:20:13,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:20:13,284 INFO L479 AbstractCegarLoop]: Abstraction has 852 states and 1127 transitions. [2020-09-25 11:20:13,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:20:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1127 transitions. [2020-09-25 11:20:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-09-25 11:20:13,290 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:20:13,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:20:13,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:20:13,291 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:20:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:20:13,292 INFO L82 PathProgramCache]: Analyzing trace with hash -767321971, now seen corresponding path program 1 times [2020-09-25 11:20:13,292 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:20:13,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898247130] [2020-09-25 11:20:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:20:13,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 11:20:13,334 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 11:20:13,334 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 11:20:13,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:20:13,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:20:13 BoogieIcfgContainer [2020-09-25 11:20:13,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:20:13,391 INFO L168 Benchmark]: Toolchain (without parser) took 14672.40 ms. Allocated memory was 138.4 MB in the beginning and 391.1 MB in the end (delta: 252.7 MB). Free memory was 100.5 MB in the beginning and 102.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 250.9 MB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,393 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 906.26 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 168.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,396 INFO L168 Benchmark]: Boogie Preprocessor took 123.22 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,397 INFO L168 Benchmark]: RCFGBuilder took 1657.43 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 164.2 MB in the beginning and 162.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,401 INFO L168 Benchmark]: TraceAbstraction took 11975.40 ms. Allocated memory was 233.8 MB in the beginning and 391.1 MB in the end (delta: 157.3 MB). Free memory was 162.0 MB in the beginning and 102.3 MB in the end (delta: 59.7 MB). Peak memory consumption was 217.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:20:13,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 906.26 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 168.3 MB in the end (delta: -68.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.22 ms. Allocated memory is still 202.9 MB. Free memory was 168.3 MB in the beginning and 164.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1657.43 ms. Allocated memory was 202.9 MB in the beginning and 233.8 MB in the end (delta: 30.9 MB). Free memory was 164.2 MB in the beginning and 162.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 85.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11975.40 ms. Allocated memory was 233.8 MB in the beginning and 391.1 MB in the end (delta: 157.3 MB). Free memory was 162.0 MB in the beginning and 102.3 MB in the end (delta: 59.7 MB). Peak memory consumption was 217.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 67]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L7] int inputC = 3; [L8] int inputD = 4; [L9] int inputE = 5; [L10] int inputF = 6; [L11] int inputB = 2; [L14] int a1 = 23; [L15] int a19 = 9; [L16] int a10 = 0; [L17] int a12 = 0; [L18] int a4 = 14; [L579] int output = -1; [L582] COND TRUE 1 [L585] int input; [L586] input = __VERIFIER_nondet_int() [L587] COND FALSE !((input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L590] CALL, EXPR calculate_output(input) [L21] COND FALSE !((((((a10==4) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L24] COND FALSE !((((((a10==2) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L27] COND FALSE !((((((a10==0) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L30] COND FALSE !((((((a10==2) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L33] COND FALSE !((((((a10==4) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L36] COND FALSE !((((((a10==2) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L39] COND FALSE !((((((a10==3) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L42] COND FALSE !((((((a10==4) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L45] COND FALSE !((((((a10==1) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L48] COND FALSE !((((((a10==2) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L51] COND FALSE !((((((a10==1) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L54] COND FALSE !((((((a10==0) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L57] COND FALSE !((((((a10==4) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L60] COND FALSE !((((((a10==2) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L63] COND FALSE !((((((a10==0) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L66] COND FALSE !((((((a10==1) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L69] COND FALSE !((((((a10==2) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L72] COND FALSE !((((((a10==4) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L75] COND FALSE !((((((a10==1) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==6))) [L78] COND FALSE !((((((a10==3) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L81] COND FALSE !((((((a10==0) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L84] COND FALSE !((((((a10==0) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L87] COND FALSE !((((((a10==0) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L90] COND FALSE !((((((a10==0) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==7))) [L93] COND FALSE !((((((a10==4) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==6))) [L96] COND FALSE !((((((a10==3) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==6))) [L99] COND FALSE !((((((a10==4) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L102] COND FALSE !((((((a10==4) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L105] COND FALSE !((((((a10==2) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L108] COND FALSE !((((((a10==1) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L111] COND FALSE !((((((a10==1) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L114] COND FALSE !((((((a10==0) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L117] COND FALSE !((((((a10==1) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L120] COND FALSE !((((((a10==4) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L123] COND FALSE !((((((a10==2) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L126] COND FALSE !((((((a10==3) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L129] COND FALSE !((((((a10==3) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L132] COND FALSE !((((((a10==3) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==7))) [L135] COND FALSE !((((((a10==3) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L138] COND FALSE !((((((a10==2) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L141] COND FALSE !((((((a10==1) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==7))) [L144] COND FALSE !((((((a10==0) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L147] COND FALSE !((((((a10==2) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==6))) [L150] COND FALSE !((((((a10==0) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L153] COND FALSE !((((((a10==3) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L156] COND FALSE !((((((a10==4) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==7))) [L159] COND FALSE !((((((a10==1) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==6))) [L162] COND FALSE !((((((a10==0) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==6))) [L165] COND FALSE !((((((a10==4) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L168] COND FALSE !((((((a10==3) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==6))) [L171] COND FALSE !((((((a10==2) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==6))) [L174] COND FALSE !((((((a10==1) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L177] COND FALSE !((((((a10==4) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==6))) [L180] COND FALSE !((((((a10==0) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==6))) [L183] COND FALSE !((((((a10==2) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==7))) [L186] COND FALSE !((((((a10==3) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L189] COND FALSE !((((((a10==3) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L192] COND FALSE !((((((a10==3) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L195] COND FALSE !((((((a10==1) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L198] COND FALSE !((((((a10==0) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==9))) [L201] COND FALSE !((((((a10==1) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L205] COND FALSE !((((a10==4) && ( 218 < a1 && (((input == 4) && (a12==0)) && (a4==14)))) && (a19==9))) [L210] COND FALSE !(((a4==14) && (((a12==0) && ((( ((-13 < a1) && (38 >= a1)) || ((38 < a1) && (218 >= a1)) ) && (input == 4)) && (a19==9))) && (a10==0)))) [L215] COND FALSE !(((((a4==14) && ((a19==10) && ((a10==1) && (input == 2)))) && (a12==0)) && 218 < a1 )) [L220] COND FALSE !(((a12==0) && ((a19==9) && ((a10==1) && (( 218 < a1 && (input == 3)) && (a4==14)))))) [L225] COND FALSE !(((a19==10) && (((a4==14) && (((((a10==0) && ((38 < a1) && (218 >= a1)) ) || ((a10==0) && 218 < a1 )) || ((a10==1) && a1 <= -13 )) && (input == 5))) && (a12==0)))) [L231] COND FALSE !(((a12==0) && ((a19==9) && (((a4==14) && ((input == 2) && ( ((-13 < a1) && (38 >= a1)) || ((38 < a1) && (218 >= a1)) ))) && (a10==3))))) [L236] COND FALSE !(((a12==0) && ((((a4==14) && ((input == 3) && ( a1 <= -13 || ((-13 < a1) && (38 >= a1)) ))) && (a10==2)) && (a19==9)))) [L239] COND FALSE !((((a12==0) && ( ((-13 < a1) && (38 >= a1)) && (((input == 3) && (a19==10)) && (a4==14)))) && (a10==1))) [L244] COND FALSE !((((a19==9) && (((input == 6) && (( 218 < a1 && (a10==0)) || ( a1 <= -13 && (a10==1)))) && (a4==14))) && (a12==0))) [L249] COND FALSE !(( ((38 < a1) && (218 >= a1)) && (((a4==14) && ((a19==10) && ((a10==1) && (input == 4)))) && (a12==0)))) [L254] COND TRUE (((a4==14) && (((( ((-13 < a1) && (38 >= a1)) || ((38 < a1) && (218 >= a1)) ) && (input == 5)) && (a19==9)) && (a12==0))) && (a10==0)) [L255] a1 = (((a1 / 5) + 110755) + 220746) [L256] a10 = 1 [L257] a19 = 8 [L259] return -1; [L590] RET, EXPR calculate_output(input) [L590] output = calculate_output(input) [L582] COND TRUE 1 [L585] int input; [L586] input = __VERIFIER_nondet_int() [L587] COND FALSE !((input != 2) && (input != 3) && (input != 4) && (input != 5) && (input != 6)) [L590] CALL calculate_output(input) [L21] COND FALSE !((((((a10==4) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L24] COND FALSE !((((((a10==2) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==8))) [L27] COND FALSE !((((((a10==0) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L30] COND FALSE !((((((a10==2) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L33] COND FALSE !((((((a10==4) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==6))) [L36] COND FALSE !((((((a10==2) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L39] COND FALSE !((((((a10==3) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==6))) [L42] COND FALSE !((((((a10==4) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L45] COND FALSE !((((((a10==1) && (a12==0)) && ((-13 < a1) && (38 >= a1)) ) && (a4==14)) && (a19==7))) [L48] COND FALSE !((((((a10==2) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==7))) [L51] COND FALSE !((((((a10==1) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==7))) [L54] COND FALSE !((((((a10==0) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8))) [L57] COND FALSE !((((((a10==4) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L60] COND FALSE !((((((a10==2) && (a12==0)) && a1 <= -13 ) && (a4==14)) && (a19==8))) [L63] COND FALSE !((((((a10==0) && (a12==0)) && ((38 < a1) && (218 >= a1)) ) && (a4==14)) && (a19==8))) [L66] COND TRUE (((((a10==1) && (a12==0)) && 218 < a1 ) && (a4==14)) && (a19==8)) [L67] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 456 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 395 SDtfs, 1700 SDslu, 431 SDs, 0 SdLazy, 2405 SolverSat, 417 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=852occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 54 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 292 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 79894 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 24/24 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 incorrect! Received shutdown request...