/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:34:38,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:34:38,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:34:38,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:34:38,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:34:38,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:34:38,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:34:38,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:34:38,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:34:38,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:34:38,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:34:38,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:34:38,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:34:38,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:34:38,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:34:38,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:34:38,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:34:38,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:34:38,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:34:38,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:34:38,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:34:38,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:34:38,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:34:38,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:34:38,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:34:38,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:34:38,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:34:38,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:34:38,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:34:38,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:34:38,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:34:38,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:34:38,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:34:38,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:34:38,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:34:38,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:34:38,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:34:38,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:34:38,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:34:38,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:34:38,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:34:38,279 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 [2020-09-21 12:34:38,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:34:38,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:34:38,329 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:34:38,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:34:38,330 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:34:38,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:34:38,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:34:38,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:34:38,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:34:38,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:34:38,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:34:38,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:34:38,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:34:38,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:34:38,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:34:38,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:34:38,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:34:38,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:34:38,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:34:38,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:34:38,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:34:38,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:34:38,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:34:38,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:34:38,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:34:38,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:34:38,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:34:38,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:34:38,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:34:38,336 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.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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:34:38,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:34:38,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:34:38,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:34:38,833 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:34:38,833 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:34:38,835 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-21 12:34:38,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0747ad81/c63ce7bea2034b4e8396d2acf6278d54/FLAGd673efacd [2020-09-21 12:34:39,487 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:34:39,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/brs2f.c [2020-09-21 12:34:39,497 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0747ad81/c63ce7bea2034b4e8396d2acf6278d54/FLAGd673efacd [2020-09-21 12:34:39,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f0747ad81/c63ce7bea2034b4e8396d2acf6278d54 [2020-09-21 12:34:39,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:34:39,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:34:39,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:39,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:34:39,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:34:39,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:39" (1/1) ... [2020-09-21 12:34:39,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@df746a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:39, skipping insertion in model container [2020-09-21 12:34:39,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:34:39" (1/1) ... [2020-09-21 12:34:39,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:34:39,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:34:40,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:40,121 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:34:40,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:34:40,159 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:34:40,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40 WrapperNode [2020-09-21 12:34:40,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:34:40,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:34:40,160 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:34:40,160 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:34:40,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (1/1) ... [2020-09-21 12:34:40,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:34:40,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:34:40,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:34:40,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:34:40,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (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 [2020-09-21 12:34:40,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:34:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:34:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 12:34:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-21 12:34:40,366 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:34:40,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:34:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 12:34:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 12:34:40,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 12:34:40,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 12:34:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 12:34:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:34:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:34:40,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:34:40,694 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:34:40,695 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-21 12:34:40,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:40 BoogieIcfgContainer [2020-09-21 12:34:40,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:34:40,701 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:34:40,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:34:40,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:34:40,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:34:39" (1/3) ... [2020-09-21 12:34:40,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712bc8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:40, skipping insertion in model container [2020-09-21 12:34:40,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:34:40" (2/3) ... [2020-09-21 12:34:40,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712bc8e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:34:40, skipping insertion in model container [2020-09-21 12:34:40,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:34:40" (3/3) ... [2020-09-21 12:34:40,708 INFO L109 eAbstractionObserver]: Analyzing ICFG brs2f.c [2020-09-21 12:34:40,717 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:34:40,725 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:34:40,744 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:34:40,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:34:40,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:34:40,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:34:40,770 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:34:40,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:34:40,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:34:40,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:34:40,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:34:40,791 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 12:34:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:34:40,798 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:40,799 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] [2020-09-21 12:34:40,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:40,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1824292310, now seen corresponding path program 1 times [2020-09-21 12:34:40,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:40,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924573058] [2020-09-21 12:34:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:40,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:40,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:34:41,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:34:41,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-21 12:34:41,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:34:41,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-21 12:34:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:41,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:34:41,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:41,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:41,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:41,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:41,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:34:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:34:41,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:41,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:41,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924573058] [2020-09-21 12:34:41,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:41,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 12:34:41,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832918500] [2020-09-21 12:34:41,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 12:34:41,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:41,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 12:34:41,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:34:41,535 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2020-09-21 12:34:41,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:41,650 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-09-21 12:34:41,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 12:34:41,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 12:34:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:41,663 INFO L225 Difference]: With dead ends: 56 [2020-09-21 12:34:41,664 INFO L226 Difference]: Without dead ends: 26 [2020-09-21 12:34:41,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 12:34:41,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-21 12:34:41,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-21 12:34:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-21 12:34:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-09-21 12:34:41,718 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2020-09-21 12:34:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:41,719 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-09-21 12:34:41,719 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 12:34:41,719 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-09-21 12:34:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:34:41,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:41,720 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] [2020-09-21 12:34:41,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:34:41,721 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:41,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1767537087, now seen corresponding path program 1 times [2020-09-21 12:34:41,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:41,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862646527] [2020-09-21 12:34:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:34:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:34:42,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-21 12:34:42,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:34:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:34:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:34:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:42,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:42,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:34:42,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:42,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:34:42,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:42,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:42,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:42,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862646527] [2020-09-21 12:34:42,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:42,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:34:42,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061737779] [2020-09-21 12:34:42,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:34:42,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:42,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:34:42,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:34:42,159 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-09-21 12:34:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:42,292 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-09-21 12:34:42,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:34:42,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 12:34:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:42,294 INFO L225 Difference]: With dead ends: 38 [2020-09-21 12:34:42,295 INFO L226 Difference]: Without dead ends: 28 [2020-09-21 12:34:42,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:34:42,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-21 12:34:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-21 12:34:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-21 12:34:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-21 12:34:42,304 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 21 [2020-09-21 12:34:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:42,304 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-21 12:34:42,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:34:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-21 12:34:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:34:42,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:42,306 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] [2020-09-21 12:34:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:34:42,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash -395878216, now seen corresponding path program 1 times [2020-09-21 12:34:42,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:42,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763607971] [2020-09-21 12:34:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-21 12:34:42,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:34:42,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:42,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:34:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:42,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:42,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:42,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:42,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:42,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:42,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:42,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:42,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:34:42,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:42,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:42,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:34:42,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763607971] [2020-09-21 12:34:42,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:42,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:34:42,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365248168] [2020-09-21 12:34:42,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:34:42,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:42,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:34:42,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:34:42,915 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 8 states. [2020-09-21 12:34:43,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:43,127 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-21 12:34:43,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:34:43,128 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-21 12:34:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:43,129 INFO L225 Difference]: With dead ends: 37 [2020-09-21 12:34:43,129 INFO L226 Difference]: Without dead ends: 31 [2020-09-21 12:34:43,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:34:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-21 12:34:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-09-21 12:34:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-09-21 12:34:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-09-21 12:34:43,138 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 27 [2020-09-21 12:34:43,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:43,138 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-09-21 12:34:43,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:34:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-09-21 12:34:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:34:43,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:43,140 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] [2020-09-21 12:34:43,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:34:43,140 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:43,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1205224842, now seen corresponding path program 1 times [2020-09-21 12:34:43,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:43,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024536306] [2020-09-21 12:34:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-21 12:34:43,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:34:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-21 12:34:43,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-21 12:34:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:34:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:43,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:43,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:43,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:34:43,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:43,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:43,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:43,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:34:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:34:43,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024536306] [2020-09-21 12:34:43,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:34:43,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 12:34:43,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595351387] [2020-09-21 12:34:43,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 12:34:43,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:43,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 12:34:43,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:34:43,776 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2020-09-21 12:34:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:43,851 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-09-21 12:34:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 12:34:43,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-09-21 12:34:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:43,852 INFO L225 Difference]: With dead ends: 48 [2020-09-21 12:34:43,852 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 12:34:43,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 12:34:43,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 12:34:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-09-21 12:34:43,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:34:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-09-21 12:34:43,860 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 27 [2020-09-21 12:34:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:43,860 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-09-21 12:34:43,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 12:34:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-09-21 12:34:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-21 12:34:43,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:43,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:34:43,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:34:43,862 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:43,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1239476407, now seen corresponding path program 1 times [2020-09-21 12:34:43,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:43,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356912178] [2020-09-21 12:34:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:43,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:44,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-21 12:34:44,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:34:44,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:34:44,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:34:44,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:34:44,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:34:44,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:44,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:44,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:44,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:44,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:44,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:44,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:44,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:44,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:44,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:44,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:44,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:44,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:44,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:44,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:34:44,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:44,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:44,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:34:44,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:44,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356912178] [2020-09-21 12:34:44,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:44,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:34:44,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371137184] [2020-09-21 12:34:44,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:34:44,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:44,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:34:44,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:34:44,980 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 8 states. [2020-09-21 12:34:45,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:45,190 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-09-21 12:34:45,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:34:45,191 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-09-21 12:34:45,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:45,192 INFO L225 Difference]: With dead ends: 54 [2020-09-21 12:34:45,192 INFO L226 Difference]: Without dead ends: 38 [2020-09-21 12:34:45,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:34:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-21 12:34:45,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-09-21 12:34:45,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 12:34:45,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-21 12:34:45,204 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 30 [2020-09-21 12:34:45,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:45,204 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-21 12:34:45,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:34:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-21 12:34:45,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-21 12:34:45,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:45,207 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:34:45,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:34:45,207 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:45,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1492634651, now seen corresponding path program 1 times [2020-09-21 12:34:45,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:45,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890591945] [2020-09-21 12:34:45,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:45,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:34:46,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:34:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:46,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:46,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:46,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:34:46,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:46,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:46,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:46,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:46,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:34:46,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:34:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:46,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:34:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:46,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890591945] [2020-09-21 12:34:46,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:46,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-21 12:34:46,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088857795] [2020-09-21 12:34:46,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:34:46,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:46,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:34:46,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:34:46,477 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 13 states. [2020-09-21 12:34:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:47,139 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-09-21 12:34:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 12:34:47,139 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-21 12:34:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:47,140 INFO L225 Difference]: With dead ends: 64 [2020-09-21 12:34:47,140 INFO L226 Difference]: Without dead ends: 40 [2020-09-21 12:34:47,141 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:34:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-21 12:34:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-21 12:34:47,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-21 12:34:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-09-21 12:34:47,157 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 33 [2020-09-21 12:34:47,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:47,158 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-09-21 12:34:47,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:34:47,159 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-09-21 12:34:47,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 12:34:47,161 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:47,161 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 12:34:47,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:34:47,162 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:47,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:47,163 INFO L82 PathProgramCache]: Analyzing trace with hash -2145280396, now seen corresponding path program 2 times [2020-09-21 12:34:47,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:47,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409778178] [2020-09-21 12:34:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:47,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:47,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-21 12:34:48,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:34:48,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:34:48,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:34:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-21 12:34:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:34:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:34:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:34:48,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:48,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:48,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:48,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:48,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:34:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:34:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:34:48,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:34:48,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:34:48,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:34:48,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:34:48,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:34:48,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:34:48,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:34:48,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:34:48,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:34:48,300 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:34:48,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409778178] [2020-09-21 12:34:48,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:34:48,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:34:48,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343432488] [2020-09-21 12:34:48,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:34:48,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:34:48,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:34:48,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:34:48,307 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 10 states. [2020-09-21 12:34:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:34:48,532 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2020-09-21 12:34:48,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:34:48,532 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-09-21 12:34:48,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:34:48,534 INFO L225 Difference]: With dead ends: 66 [2020-09-21 12:34:48,534 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:34:48,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:34:48,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:34:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-21 12:34:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 12:34:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-09-21 12:34:48,545 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 36 [2020-09-21 12:34:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:34:48,545 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-09-21 12:34:48,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:34:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-09-21 12:34:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 12:34:48,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:34:48,550 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-09-21 12:34:48,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:34:48,550 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:34:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:34:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1680039082, now seen corresponding path program 3 times [2020-09-21 12:34:48,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:34:48,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247104449] [2020-09-21 12:34:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:34:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:34:48,593 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:34:48,593 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:34:48,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:34:48,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:34:48 BoogieIcfgContainer [2020-09-21 12:34:48,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:34:48,657 INFO L168 Benchmark]: Toolchain (without parser) took 8807.50 ms. Allocated memory was 140.5 MB in the beginning and 303.6 MB in the end (delta: 163.1 MB). Free memory was 103.3 MB in the beginning and 273.3 MB in the end (delta: -170.0 MB). Peak memory consumption was 147.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,660 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,662 INFO L168 Benchmark]: Boogie Preprocessor took 123.76 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,664 INFO L168 Benchmark]: RCFGBuilder took 415.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 163.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,665 INFO L168 Benchmark]: TraceAbstraction took 7944.23 ms. Allocated memory was 202.9 MB in the beginning and 303.6 MB in the end (delta: 100.7 MB). Free memory was 162.3 MB in the beginning and 273.3 MB in the end (delta: -110.9 MB). Peak memory consumption was 144.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:34:48,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.32 ms. Allocated memory is still 140.5 MB. Free memory was 102.6 MB in the beginning and 92.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.76 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 92.2 MB in the beginning and 180.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 415.39 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 163.0 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7944.23 ms. Allocated memory was 202.9 MB in the beginning and 303.6 MB in the end (delta: 100.7 MB). Free memory was 162.3 MB in the beginning and 273.3 MB in the end (delta: -110.9 MB). Peak memory consumption was 144.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i