/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:20:25,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:20:25,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:20:25,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:20:25,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:20:25,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:20:25,303 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:20:25,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:20:25,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:20:25,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:20:25,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:20:25,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:20:25,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:20:25,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:20:25,314 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:20:25,316 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:20:25,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:20:25,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:20:25,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:20:25,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:20:25,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:20:25,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:20:25,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:20:25,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:20:25,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:20:25,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:20:25,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:20:25,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:20:25,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:20:25,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:20:25,331 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:20:25,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:20:25,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:20:25,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:20:25,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:20:25,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:20:25,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:20:25,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:20:25,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:20:25,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:20:25,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:20:25,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-14 23:20:25,362 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:20:25,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:20:25,363 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:20:25,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:20:25,364 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:20:25,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:20:25,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:20:25,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:20:25,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:20:25,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:20:25,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:20:25,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:20:25,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:20:25,366 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:20:25,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:20:25,366 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:20:25,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:20:25,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:20:25,367 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:20:25,367 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:20:25,367 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:20:25,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:25,367 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:20:25,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:20:25,369 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:20:25,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:20:25,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:20:25,710 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:20:25,713 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:20:25,713 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:20:25,714 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-10-14 23:20:25,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8132dcbd/67a0df60c1ab44c49fc636ef60c1bad5/FLAGabb2b16d8 [2020-10-14 23:20:26,306 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:20:26,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-cnstr_1-2.i [2020-10-14 23:20:26,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8132dcbd/67a0df60c1ab44c49fc636ef60c1bad5/FLAGabb2b16d8 [2020-10-14 23:20:26,610 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8132dcbd/67a0df60c1ab44c49fc636ef60c1bad5 [2020-10-14 23:20:26,620 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:20:26,622 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:20:26,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:26,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:20:26,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:20:26,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40f1707e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:26, skipping insertion in model container [2020-10-14 23:20:26,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:20:26" (1/1) ... [2020-10-14 23:20:26,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:20:26,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:20:27,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:27,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:20:27,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:20:27,213 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:20:27,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27 WrapperNode [2020-10-14 23:20:27,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:20:27,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:20:27,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:20:27,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:20:27,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... [2020-10-14 23:20:27,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:20:27,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:20:27,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:20:27,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:20:27,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:20:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:20:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:20:27,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:20:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:20:27,351 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:20:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:20:27,352 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:20:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:20:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:20:27,353 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:20:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:20:27,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:20:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:20:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:20:27,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:20:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:20:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:20:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:20:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:20:27,356 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:20:27,357 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:20:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:20:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:20:27,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:20:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:20:27,360 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:20:27,361 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:20:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:20:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:20:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:20:27,362 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:20:27,363 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:20:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:20:27,364 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:20:27,365 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:20:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:20:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:20:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:20:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:20:27,366 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:20:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:20:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:20:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:20:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:20:27,368 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:20:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:20:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:20:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:20:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:20:27,369 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:20:27,370 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:20:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:20:27,371 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:20:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:20:27,372 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:20:27,373 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:20:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:20:27,374 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:20:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:20:27,375 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:20:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:20:27,376 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:20:27,377 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:20:27,378 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:20:27,379 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:20:27,380 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:20:27,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:20:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:20:27,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:20:27,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:20:27,951 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-14 23:20:27,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:27 BoogieIcfgContainer [2020-10-14 23:20:27,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:20:27,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:20:27,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:20:27,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:20:27,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:20:26" (1/3) ... [2020-10-14 23:20:27,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39449872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:27, skipping insertion in model container [2020-10-14 23:20:27,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:20:27" (2/3) ... [2020-10-14 23:20:27,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39449872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:20:27, skipping insertion in model container [2020-10-14 23:20:27,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:20:27" (3/3) ... [2020-10-14 23:20:27,964 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-cnstr_1-2.i [2020-10-14 23:20:27,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:20:27,983 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 23:20:27,997 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 23:20:28,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:20:28,023 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:20:28,023 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:20:28,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:20:28,024 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:20:28,024 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:20:28,024 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:20:28,024 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:20:28,044 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-14 23:20:28,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-14 23:20:28,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:28,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:28,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:28,059 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-10-14 23:20:28,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:28,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204239758] [2020-10-14 23:20:28,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 23:20:28,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-14 23:20:28,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:20:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:28,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-14 23:20:28,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:20:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:28,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:28,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:28,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:28,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 23:20:28,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:28,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:28,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:28,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:28,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204239758] [2020-10-14 23:20:28,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:28,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:20:28,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631143654] [2020-10-14 23:20:28,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:20:28,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:28,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:20:28,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:20:28,750 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 5 states. [2020-10-14 23:20:29,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:29,040 INFO L93 Difference]: Finished difference Result 67 states and 107 transitions. [2020-10-14 23:20:29,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:20:29,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-14 23:20:29,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:29,055 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:20:29,056 INFO L226 Difference]: Without dead ends: 33 [2020-10-14 23:20:29,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-14 23:20:29,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-10-14 23:20:29,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:20:29,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-14 23:20:29,114 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 10 [2020-10-14 23:20:29,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:29,115 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-14 23:20:29,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:20:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-14 23:20:29,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:20:29,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:29,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:29,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:20:29,117 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:29,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:29,118 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-10-14 23:20:29,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:29,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010846993] [2020-10-14 23:20:29,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 23:20:29,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 23:20:29,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:29,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:29,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 23:20:29,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:29,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:29,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:29,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:29,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:29,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:29,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:29,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:29,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:29,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010846993] [2020-10-14 23:20:29,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:29,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:29,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951437208] [2020-10-14 23:20:29,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:29,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:29,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:29,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:29,362 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-10-14 23:20:29,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:29,605 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-10-14 23:20:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:29,606 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-14 23:20:29,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:29,608 INFO L225 Difference]: With dead ends: 51 [2020-10-14 23:20:29,608 INFO L226 Difference]: Without dead ends: 49 [2020-10-14 23:20:29,609 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-14 23:20:29,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-10-14 23:20:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:20:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-14 23:20:29,618 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-10-14 23:20:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:29,618 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-14 23:20:29,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-14 23:20:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:20:29,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:29,620 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:29,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:20:29,620 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:29,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-10-14 23:20:29,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:29,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000389513] [2020-10-14 23:20:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:29,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-14 23:20:30,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-14 23:20:30,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:20:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:30,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:30,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:30,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:30,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:20:30,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:30,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:30,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:30,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000389513] [2020-10-14 23:20:30,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:20:30,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:20:30,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140191395] [2020-10-14 23:20:30,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:20:30,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:30,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:20:30,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:30,222 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-10-14 23:20:30,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:30,747 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-14 23:20:30,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:20:30,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-10-14 23:20:30,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:30,749 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:20:30,749 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:20:30,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:20:30,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:20:30,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2020-10-14 23:20:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-14 23:20:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-14 23:20:30,757 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-10-14 23:20:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:30,758 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-14 23:20:30,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:20:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-14 23:20:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:20:30,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:30,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:30,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:20:30,760 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-10-14 23:20:30,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:30,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258835425] [2020-10-14 23:20:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:30,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:30,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:30,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:20:30,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:20:30,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 23:20:30,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:30,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:20:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:20:30,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:20:30,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:31,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:20:31,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:20:31,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:20:31,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:20:31,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:20:31,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:20:31,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:20:31,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:20:31,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:20:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:20:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:20:31,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:20:31,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:20:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:20:31,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258835425] [2020-10-14 23:20:31,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:20:31,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:20:31,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853250837] [2020-10-14 23:20:31,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:20:31,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:20:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:20:31,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:20:31,103 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-10-14 23:20:31,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:20:31,370 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2020-10-14 23:20:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:20:31,371 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-14 23:20:31,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:20:31,372 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:20:31,372 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:20:31,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:20:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:20:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 33. [2020-10-14 23:20:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 23:20:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-14 23:20:31,380 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 19 [2020-10-14 23:20:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:20:31,380 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-14 23:20:31,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:20:31,380 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-14 23:20:31,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-14 23:20:31,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:20:31,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:20:31,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:20:31,382 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:20:31,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:20:31,382 INFO L82 PathProgramCache]: Analyzing trace with hash -506551229, now seen corresponding path program 1 times [2020-10-14 23:20:31,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:20:31,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991698004] [2020-10-14 23:20:31,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:20:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:20:31,398 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:20:31,398 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:20:31,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:20:31,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:20:31 BoogieIcfgContainer [2020-10-14 23:20:31,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:20:31,430 INFO L168 Benchmark]: Toolchain (without parser) took 4807.27 ms. Allocated memory was 145.2 MB in the beginning and 247.5 MB in the end (delta: 102.2 MB). Free memory was 99.8 MB in the beginning and 95.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 106.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,432 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,433 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.80 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 169.2 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,434 INFO L168 Benchmark]: Boogie Preprocessor took 64.03 ms. Allocated memory is still 202.9 MB. Free memory was 169.2 MB in the beginning and 166.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,434 INFO L168 Benchmark]: RCFGBuilder took 677.14 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 119.3 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,436 INFO L168 Benchmark]: TraceAbstraction took 3469.67 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 119.3 MB in the beginning and 95.6 MB in the end (delta: 23.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:20:31,440 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 145.2 MB. Free memory was 119.8 MB in the beginning and 119.3 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 590.80 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 99.8 MB in the beginning and 169.2 MB in the end (delta: -69.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.03 ms. Allocated memory is still 202.9 MB. Free memory was 169.2 MB in the beginning and 166.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 677.14 ms. Allocated memory is still 202.9 MB. Free memory was 166.1 MB in the beginning and 119.3 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3469.67 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 119.3 MB in the beginning and 95.6 MB in the end (delta: 23.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1040]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L994] SLL* list = malloc(sizeof(SLL)); [L995] list->next = ((void*)0) [L996] list->prev = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1025] end = ((void*)0) [L1026] end = list [L1029] COND FALSE !(!(((void*)0) != end)) [L1030] EXPR end->colour [L1030] COND FALSE !(!(BLACK == end->colour)) [L1032] COND TRUE ((void*)0) != end [L1034] EXPR end->colour [L1034] COND FALSE !(RED == end->colour) [L1040] EXPR end->next [L1040] COND TRUE !(end->next) [L1040] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 134 SDslu, 201 SDs, 0 SdLazy, 296 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 54 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 5436 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/2 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...