/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:28:17,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:28:17,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:28:17,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:28:17,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:28:17,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:28:17,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:28:17,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:28:17,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:28:17,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:28:17,237 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:28:17,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:28:17,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:28:17,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:28:17,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:28:17,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:28:17,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:28:17,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:28:17,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:28:17,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:28:17,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:28:17,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:28:17,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:28:17,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:28:17,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:28:17,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:28:17,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:28:17,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:28:17,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:28:17,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:28:17,260 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:28:17,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:28:17,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:28:17,263 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:28:17,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:28:17,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:28:17,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:28:17,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:28:17,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:28:17,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:28:17,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:28:17,268 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 [2020-09-24 20:28:17,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:28:17,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:28:17,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:28:17,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:28:17,298 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:28:17,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:28:17,299 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:28:17,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:28:17,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:28:17,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:28:17,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:28:17,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:28:17,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:28:17,300 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:28:17,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:28:17,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:28:17,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:28:17,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:28:17,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:28:17,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:28:17,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:28:17,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:28:17,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:28:17,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:28:17,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:28:17,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:28:17,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:28:17,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:28:17,303 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:28:17,303 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true; [2020-09-24 20:28:17,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:28:17,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:28:17,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:28:17,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:28:17,832 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:28:17,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 20:28:17,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2664fbfb3/e31af2be92794778a7ddfe01ea30c5bf/FLAG6043c9558 [2020-09-24 20:28:18,571 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:28:18,572 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 20:28:18,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2664fbfb3/e31af2be92794778a7ddfe01ea30c5bf/FLAG6043c9558 [2020-09-24 20:28:18,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2664fbfb3/e31af2be92794778a7ddfe01ea30c5bf [2020-09-24 20:28:18,857 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:28:18,863 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:28:18,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:18,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:28:18,870 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:28:18,871 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:18" (1/1) ... [2020-09-24 20:28:18,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bae0244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:18, skipping insertion in model container [2020-09-24 20:28:18,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:28:18" (1/1) ... [2020-09-24 20:28:18,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:28:18,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:28:19,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:19,485 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:28:19,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:28:19,634 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:28:19,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19 WrapperNode [2020-09-24 20:28:19,636 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:28:19,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:28:19,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:28:19,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:28:19,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (1/1) ... [2020-09-24 20:28:19,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:28:19,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:28:19,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:28:19,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:28:19,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (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 [2020-09-24 20:28:19,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:28:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:28:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 20:28:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 20:28:19,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-24 20:28:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-24 20:28:19,820 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-24 20:28:19,821 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-24 20:28:19,822 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-24 20:28:19,822 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-24 20:28:19,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:28:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:28:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 20:28:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 20:28:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 20:28:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 20:28:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 20:28:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 20:28:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 20:28:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 20:28:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 20:28:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 20:28:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 20:28:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 20:28:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 20:28:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 20:28:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 20:28:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 20:28:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 20:28:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 20:28:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 20:28:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 20:28:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 20:28:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 20:28:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 20:28:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 20:28:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 20:28:19,834 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 20:28:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 20:28:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 20:28:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 20:28:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 20:28:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 20:28:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 20:28:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 20:28:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 20:28:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 20:28:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 20:28:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 20:28:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 20:28:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 20:28:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 20:28:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 20:28:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 20:28:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 20:28:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 20:28:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 20:28:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 20:28:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 20:28:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 20:28:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 20:28:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 20:28:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 20:28:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 20:28:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 20:28:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 20:28:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 20:28:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 20:28:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 20:28:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 20:28:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 20:28:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 20:28:19,846 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 20:28:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 20:28:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 20:28:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 20:28:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 20:28:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 20:28:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:28:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-24 20:28:19,851 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-24 20:28:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:28:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-24 20:28:19,854 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-24 20:28:19,854 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-24 20:28:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:28:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 20:28:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:28:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:28:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:28:20,807 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:28:20,808 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-24 20:28:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:20 BoogieIcfgContainer [2020-09-24 20:28:20,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:28:20,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:28:20,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:28:20,826 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:28:20,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:28:18" (1/3) ... [2020-09-24 20:28:20,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f87d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:20, skipping insertion in model container [2020-09-24 20:28:20,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:28:19" (2/3) ... [2020-09-24 20:28:20,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f87d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:28:20, skipping insertion in model container [2020-09-24 20:28:20,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:28:20" (3/3) ... [2020-09-24 20:28:20,839 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-24 20:28:20,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:28:20,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:28:20,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:28:20,935 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:28:20,936 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:28:20,936 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:28:20,936 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:28:20,936 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:28:20,936 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:28:20,937 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:28:20,937 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:28:20,977 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-24 20:28:20,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 20:28:20,989 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:20,991 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:20,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:21,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:21,001 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-24 20:28:21,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:21,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1145582703] [2020-09-24 20:28:21,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:28:21,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 410 [2020-09-24 20:28:21,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:21,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:28:21,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:28:21,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:28:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:21,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:21,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:21,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:28:21,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:21,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:21,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:21,714 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1145582703] [2020-09-24 20:28:21,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:21,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:21,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173657425] [2020-09-24 20:28:21,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:21,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:21,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:21,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:21,752 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 6 states. [2020-09-24 20:28:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:22,824 INFO L93 Difference]: Finished difference Result 557 states and 746 transitions. [2020-09-24 20:28:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:28:22,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-24 20:28:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:22,846 INFO L225 Difference]: With dead ends: 557 [2020-09-24 20:28:22,846 INFO L226 Difference]: Without dead ends: 271 [2020-09-24 20:28:22,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:28:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-09-24 20:28:22,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 229. [2020-09-24 20:28:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 20:28:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 252 transitions. [2020-09-24 20:28:22,938 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 252 transitions. Word has length 15 [2020-09-24 20:28:22,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:22,938 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 252 transitions. [2020-09-24 20:28:22,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 252 transitions. [2020-09-24 20:28:22,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 20:28:22,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:22,940 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] [2020-09-24 20:28:22,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:28:22,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:22,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:22,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1718433881, now seen corresponding path program 1 times [2020-09-24 20:28:22,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:22,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444626284] [2020-09-24 20:28:22,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:22,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:23,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 20:28:23,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-24 20:28:23,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:28:23,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:23,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:23,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:23,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:23,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:23,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:23,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:23,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:28:23,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:23,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:23,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:23,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:23,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444626284] [2020-09-24 20:28:23,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:23,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:23,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938114446] [2020-09-24 20:28:23,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:23,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:23,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:23,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:23,609 INFO L87 Difference]: Start difference. First operand 229 states and 252 transitions. Second operand 6 states. [2020-09-24 20:28:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:24,399 INFO L93 Difference]: Finished difference Result 259 states and 289 transitions. [2020-09-24 20:28:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:24,399 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 20:28:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:24,403 INFO L225 Difference]: With dead ends: 259 [2020-09-24 20:28:24,403 INFO L226 Difference]: Without dead ends: 255 [2020-09-24 20:28:24,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:28:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-24 20:28:24,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-09-24 20:28:24,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 20:28:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 249 transitions. [2020-09-24 20:28:24,453 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 249 transitions. Word has length 26 [2020-09-24 20:28:24,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:24,454 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 249 transitions. [2020-09-24 20:28:24,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 249 transitions. [2020-09-24 20:28:24,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 20:28:24,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:24,457 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] [2020-09-24 20:28:24,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:28:24,458 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:24,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:24,458 INFO L82 PathProgramCache]: Analyzing trace with hash 195902205, now seen corresponding path program 1 times [2020-09-24 20:28:24,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:24,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202432950] [2020-09-24 20:28:24,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:24,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:24,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 20:28:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:24,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-09-24 20:28:24,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 20:28:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:28:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:28:25,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:25,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:28:25,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:25,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1202432950] [2020-09-24 20:28:25,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:25,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:25,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477236267] [2020-09-24 20:28:25,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:25,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:25,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:25,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:25,049 INFO L87 Difference]: Start difference. First operand 227 states and 249 transitions. Second operand 6 states. [2020-09-24 20:28:25,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:25,845 INFO L93 Difference]: Finished difference Result 257 states and 286 transitions. [2020-09-24 20:28:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:28:25,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-24 20:28:25,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:25,848 INFO L225 Difference]: With dead ends: 257 [2020-09-24 20:28:25,848 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 20:28:25,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:28:25,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 20:28:25,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 225. [2020-09-24 20:28:25,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-24 20:28:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 246 transitions. [2020-09-24 20:28:25,866 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 246 transitions. Word has length 26 [2020-09-24 20:28:25,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:25,866 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 246 transitions. [2020-09-24 20:28:25,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 246 transitions. [2020-09-24 20:28:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 20:28:25,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:25,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:25,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:28:25,868 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:25,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:25,869 INFO L82 PathProgramCache]: Analyzing trace with hash 987423277, now seen corresponding path program 1 times [2020-09-24 20:28:25,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:25,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797590862] [2020-09-24 20:28:25,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:25,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:26,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:26,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 20:28:26,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:28:26,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 20:28:26,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:28:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:28:26,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:28:26,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:26,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:26,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:26,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:26,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:26,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:28:26,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:26,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:26,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:26,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:26,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:26,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797590862] [2020-09-24 20:28:26,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:26,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 20:28:26,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88148683] [2020-09-24 20:28:26,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:28:26,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:26,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:28:26,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:28:26,125 INFO L87 Difference]: Start difference. First operand 225 states and 246 transitions. Second operand 6 states. [2020-09-24 20:28:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:26,813 INFO L93 Difference]: Finished difference Result 455 states and 500 transitions. [2020-09-24 20:28:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:28:26,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-09-24 20:28:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:26,817 INFO L225 Difference]: With dead ends: 455 [2020-09-24 20:28:26,818 INFO L226 Difference]: Without dead ends: 254 [2020-09-24 20:28:26,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:28:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-24 20:28:26,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 227. [2020-09-24 20:28:26,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 20:28:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-24 20:28:26,842 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 30 [2020-09-24 20:28:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:26,842 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-24 20:28:26,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:28:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-24 20:28:26,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:28:26,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:26,849 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:26,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:28:26,849 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:26,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-24 20:28:26,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:26,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758212442] [2020-09-24 20:28:26,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:26,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:27,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:27,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:27,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:28:27,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:28:27,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-09-24 20:28:27,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:28:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:28:27,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:28:27,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:27,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:27,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:27,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:28:27,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:27,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758212442] [2020-09-24 20:28:27,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:27,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:28:27,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059952598] [2020-09-24 20:28:27,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:28:27,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:27,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:28:27,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:28:27,975 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-24 20:28:29,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:29,271 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-24 20:28:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:28:29,271 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 20:28:29,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:29,274 INFO L225 Difference]: With dead ends: 299 [2020-09-24 20:28:29,274 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 20:28:29,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:28:29,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 20:28:29,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-24 20:28:29,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 20:28:29,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-24 20:28:29,287 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-24 20:28:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:29,287 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-24 20:28:29,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:28:29,288 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-24 20:28:29,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 20:28:29,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:29,289 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:29,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:28:29,290 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:29,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:29,290 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-24 20:28:29,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:29,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1937483412] [2020-09-24 20:28:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:29,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:29,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:33,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:33,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 20:28:33,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:28:33,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4032 [2020-09-24 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:28:33,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:33,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:28:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:28:33,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:28:33,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:28:33,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:28:33,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:28:33,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:28:33,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:28:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:28:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:28:33,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:28:33,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:28:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:28:33,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1937483412] [2020-09-24 20:28:33,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:28:33,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 20:28:33,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655849404] [2020-09-24 20:28:33,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:28:33,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:28:33,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:28:33,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:28:33,446 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 10 states. [2020-09-24 20:28:34,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:28:34,656 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-09-24 20:28:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:28:34,660 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 20:28:34,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:28:34,663 INFO L225 Difference]: With dead ends: 297 [2020-09-24 20:28:34,663 INFO L226 Difference]: Without dead ends: 293 [2020-09-24 20:28:34,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:28:34,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-24 20:28:34,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 241. [2020-09-24 20:28:34,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-24 20:28:34,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 262 transitions. [2020-09-24 20:28:34,676 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 262 transitions. Word has length 46 [2020-09-24 20:28:34,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:28:34,676 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 262 transitions. [2020-09-24 20:28:34,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:28:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 262 transitions. [2020-09-24 20:28:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:28:34,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:28:34,678 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:28:34,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:28:34,679 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:28:34,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:28:34,679 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-24 20:28:34,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:28:34,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [203122571] [2020-09-24 20:28:34,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:28:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:28:34,701 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:28:34,701 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:28:34,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:28:34,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:28:34 BoogieIcfgContainer [2020-09-24 20:28:34,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:28:34,736 INFO L168 Benchmark]: Toolchain (without parser) took 15876.21 ms. Allocated memory was 146.3 MB in the beginning and 361.2 MB in the end (delta: 215.0 MB). Free memory was 100.7 MB in the beginning and 264.1 MB in the end (delta: -163.4 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,737 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.75 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 165.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,739 INFO L168 Benchmark]: Boogie Preprocessor took 95.18 ms. Allocated memory is still 202.9 MB. Free memory was 164.5 MB in the beginning and 161.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,740 INFO L168 Benchmark]: RCFGBuilder took 1087.12 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 161.1 MB in the beginning and 198.7 MB in the end (delta: -37.5 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,741 INFO L168 Benchmark]: TraceAbstraction took 13910.38 ms. Allocated memory was 236.5 MB in the beginning and 361.2 MB in the end (delta: 124.8 MB). Free memory was 197.3 MB in the beginning and 264.1 MB in the end (delta: -66.8 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:28:34,745 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.75 ms. Allocated memory was 146.3 MB in the beginning and 202.9 MB in the end (delta: 56.6 MB). Free memory was 100.0 MB in the beginning and 165.1 MB in the end (delta: -65.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.18 ms. Allocated memory is still 202.9 MB. Free memory was 164.5 MB in the beginning and 161.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1087.12 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 161.1 MB in the beginning and 198.7 MB in the end (delta: -37.5 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13910.38 ms. Allocated memory was 236.5 MB in the beginning and 361.2 MB in the end (delta: 124.8 MB). Free memory was 197.3 MB in the beginning and 264.1 MB in the end (delta: -66.8 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L627] struct list *data = ((void *)0); [L628] COND TRUE __VERIFIER_nondet_int() [L629] struct node *node = malloc(sizeof *node); [L630] COND FALSE !(!node) [L632] node->next = node [L633] node->value = __VERIFIER_nondet_int() [L634] struct list *item = malloc(sizeof *item); [L635] COND FALSE !(!item) [L637] item->slist = node [L638] item->next = data [L639] data = item [L628] COND FALSE !(__VERIFIER_nondet_int()) [L641] COND FALSE !(!data) [L643] CALL inspect_before(data) [L604] COND FALSE !(!(shape)) [L605] shape->next [L605] COND FALSE !(shape->next) [L611] COND FALSE !(!(shape)) [L612] EXPR shape->next [L612] COND FALSE !(!(shape->next == ((void *)0))) [L613] EXPR shape->slist [L613] COND FALSE !(!(shape->slist)) [L614] EXPR shape->slist [L614] EXPR shape->slist->next [L614] COND TRUE !(shape->slist->next == ((void *)0)) [L614] CALL fail() [L554] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 258 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.7s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1391 SDtfs, 1549 SDslu, 2524 SDs, 0 SdLazy, 4122 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred 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: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 238 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 241 NumberOfCodeBlocks, 241 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 32253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 4/4 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...