/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:22:17,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:22:17,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:22:17,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:22:17,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:22:17,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:22:17,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:22:17,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:22:17,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:22:17,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:22:17,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:22:17,428 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:22:17,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:22:17,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:22:17,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:22:17,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:22:17,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:22:17,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:22:17,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:22:17,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:22:17,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:22:17,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:22:17,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:22:17,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:22:17,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:22:17,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:22:17,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:22:17,473 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:22:17,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:22:17,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:22:17,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:22:17,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:22:17,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:22:17,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:22:17,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:22:17,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:22:17,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:22:17,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:22:17,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:22:17,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:22:17,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:22:17,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:22:17,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:22:17,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:22:17,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:22:17,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:22:17,509 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:22:17,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:22:17,510 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:22:17,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:22:17,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:22:17,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:22:17,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:22:17,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:22:17,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:22:17,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:22:17,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:22:17,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:22:17,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:22:17,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:22:17,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:22:17,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:22:17,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:22:17,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:22:17,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:22:17,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:22:17,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:22:17,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:22:17,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:22:17,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:22:17,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:22:17,515 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:22:18,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:22:18,047 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:22:18,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:22:18,053 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:22:18,054 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:22:18,055 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 04:22:18,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1db45d626/8fc394a9fb8d402c8e61b902b5e3c321/FLAGd47a71239 [2020-09-25 04:22:18,735 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:22:18,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 04:22:18,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1db45d626/8fc394a9fb8d402c8e61b902b5e3c321/FLAGd47a71239 [2020-09-25 04:22:19,003 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1db45d626/8fc394a9fb8d402c8e61b902b5e3c321 [2020-09-25 04:22:19,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:22:19,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:22:19,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:22:19,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:22:19,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:22:19,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ef6fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19, skipping insertion in model container [2020-09-25 04:22:19,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:22:19,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:22:19,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:22:19,662 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:22:19,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:22:19,804 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:22:19,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19 WrapperNode [2020-09-25 04:22:19,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:22:19,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:22:19,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:22:19,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:22:19,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (1/1) ... [2020-09-25 04:22:19,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:22:19,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:22:19,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:22:19,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:22:19,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (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 [2020-09-25 04:22:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:22:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:22:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 04:22:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 04:22:19,989 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-25 04:22:19,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:22:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:22:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 04:22:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 04:22:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 04:22:19,991 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 04:22:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 04:22:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 04:22:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 04:22:19,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 04:22:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 04:22:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 04:22:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 04:22:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 04:22:19,993 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 04:22:19,994 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 04:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 04:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 04:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 04:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 04:22:19,995 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 04:22:19,996 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 04:22:19,997 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 04:22:19,998 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 04:22:19,999 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 04:22:20,000 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 04:22:20,001 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 04:22:20,002 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 04:22:20,003 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 04:22:20,004 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 04:22:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 04:22:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 04:22:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 04:22:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-25 04:22:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 04:22:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 04:22:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-25 04:22:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:22:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:22:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:22:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-25 04:22:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-25 04:22:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-25 04:22:20,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:22:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 04:22:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:22:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:22:20,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:22:20,963 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:22:20,964 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 04:22:20,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:22:20 BoogieIcfgContainer [2020-09-25 04:22:20,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:22:20,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:22:20,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:22:20,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:22:20,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:22:19" (1/3) ... [2020-09-25 04:22:20,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41997a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:22:20, skipping insertion in model container [2020-09-25 04:22:20,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:22:19" (2/3) ... [2020-09-25 04:22:20,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41997a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:22:20, skipping insertion in model container [2020-09-25 04:22:20,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:22:20" (3/3) ... [2020-09-25 04:22:20,981 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-25 04:22:20,993 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:22:21,005 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:22:21,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:22:21,063 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:22:21,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:22:21,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:22:21,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:22:21,063 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:22:21,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:22:21,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:22:21,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:22:21,092 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-25 04:22:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 04:22:21,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:21,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:21,103 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:21,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:21,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-25 04:22:21,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:21,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309904120] [2020-09-25 04:22:21,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:21,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:21,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:22:21,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:21,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 04:22:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:21,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 04:22:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:22:21,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:21,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:21,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:21,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:21,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:21,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:21,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:22:21,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:21,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:21,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:21,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:21,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:22:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:21,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309904120] [2020-09-25 04:22:21,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:21,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 04:22:21,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045030320] [2020-09-25 04:22:21,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 04:22:21,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:21,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 04:22:21,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:21,759 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-09-25 04:22:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:22,210 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-09-25 04:22:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 04:22:22,213 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-25 04:22:22,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:22,232 INFO L225 Difference]: With dead ends: 521 [2020-09-25 04:22:22,232 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 04:22:22,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 04:22:22,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 04:22:22,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-09-25 04:22:22,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-25 04:22:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-09-25 04:22:22,376 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-09-25 04:22:22,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:22,377 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-09-25 04:22:22,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 04:22:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-09-25 04:22:22,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 04:22:22,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:22,378 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:22:22,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:22:22,379 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:22,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:22,379 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-09-25 04:22:22,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:22,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40209220] [2020-09-25 04:22:22,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:22,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 04:22:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 04:22:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:22:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:22:22,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 04:22:22,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:22,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:22,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:22,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 04:22:22,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:22,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:22,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:22,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:22,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:22,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40209220] [2020-09-25 04:22:22,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:22,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:22:22,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166561603] [2020-09-25 04:22:22,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:22:22,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:22,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:22:22,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:22:22,780 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 4 states. [2020-09-25 04:22:23,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:23,424 INFO L93 Difference]: Finished difference Result 453 states and 502 transitions. [2020-09-25 04:22:23,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:22:23,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-25 04:22:23,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:23,427 INFO L225 Difference]: With dead ends: 453 [2020-09-25 04:22:23,428 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 04:22:23,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:22:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 04:22:23,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-09-25 04:22:23,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 04:22:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-09-25 04:22:23,452 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 17 [2020-09-25 04:22:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:23,452 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-09-25 04:22:23,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:22:23,452 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-09-25 04:22:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 04:22:23,453 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:23,454 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] [2020-09-25 04:22:23,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:22:23,454 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:23,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-09-25 04:22:23,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:23,455 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741546477] [2020-09-25 04:22:23,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:23,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:23,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:24,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:24,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 04:22:24,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:22:24,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 838 [2020-09-25 04:22:24,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:24,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-25 04:22:24,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:22:24,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:24,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:24,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:24,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:24,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:22:24,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:24,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:24,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:24,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:24,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:24,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741546477] [2020-09-25 04:22:24,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:24,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:22:24,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640029651] [2020-09-25 04:22:24,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:22:24,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:24,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:22:24,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:22:24,417 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 6 states. [2020-09-25 04:22:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:25,085 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2020-09-25 04:22:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:22:25,086 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 04:22:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:25,093 INFO L225 Difference]: With dead ends: 258 [2020-09-25 04:22:25,093 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 04:22:25,094 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 [2020-09-25 04:22:25,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 04:22:25,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 231. [2020-09-25 04:22:25,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 04:22:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-25 04:22:25,117 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-09-25 04:22:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:25,117 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-25 04:22:25,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:22:25,117 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-25 04:22:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 04:22:25,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:25,119 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] [2020-09-25 04:22:25,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:22:25,120 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:25,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:25,120 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-25 04:22:25,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:25,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703943813] [2020-09-25 04:22:25,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:25,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:25,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:25,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:25,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:25,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:22:25,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:25,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 847 [2020-09-25 04:22:25,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:25,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:22:25,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:22:25,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:26,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:26,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:26,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:26,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:22:26,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:26,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:26,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703943813] [2020-09-25 04:22:26,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:26,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:22:26,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782623756] [2020-09-25 04:22:26,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:22:26,095 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:26,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:22:26,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:22:26,096 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-09-25 04:22:26,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:26,945 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-09-25 04:22:26,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:22:26,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 04:22:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:26,950 INFO L225 Difference]: With dead ends: 248 [2020-09-25 04:22:26,950 INFO L226 Difference]: Without dead ends: 244 [2020-09-25 04:22:26,955 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 [2020-09-25 04:22:26,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-25 04:22:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-09-25 04:22:26,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 04:22:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-09-25 04:22:26,998 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-09-25 04:22:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:26,998 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-09-25 04:22:26,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:22:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-09-25 04:22:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 04:22:27,000 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:27,001 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] [2020-09-25 04:22:27,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:22:27,001 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:27,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:27,002 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-25 04:22:27,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:27,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244488395] [2020-09-25 04:22:27,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:27,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:27,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:27,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 04:22:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-09-25 04:22:27,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:27,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:22:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 04:22:27,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:22:27,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:28,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:28,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:28,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:28,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:28,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:28,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:22:28,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:28,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:28,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:28,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:28,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:28,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:22:28,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244488395] [2020-09-25 04:22:28,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:28,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:22:28,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281148723] [2020-09-25 04:22:28,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:22:28,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:28,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:22:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:22:28,081 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-09-25 04:22:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:28,822 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-09-25 04:22:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 04:22:28,823 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-25 04:22:28,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:28,825 INFO L225 Difference]: With dead ends: 246 [2020-09-25 04:22:28,825 INFO L226 Difference]: Without dead ends: 242 [2020-09-25 04:22:28,826 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 [2020-09-25 04:22:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-25 04:22:28,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-09-25 04:22:28,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-25 04:22:28,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-25 04:22:28,840 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-09-25 04:22:28,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:28,842 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-25 04:22:28,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:22:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-25 04:22:28,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:22:28,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:28,848 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] [2020-09-25 04:22:28,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:22:28,849 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:28,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:28,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-25 04:22:28,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:28,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492629302] [2020-09-25 04:22:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:29,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 04:22:29,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:22:29,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 841 [2020-09-25 04:22:29,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:29,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 04:22:29,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:22:29,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:22:29,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:29,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:29,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:29,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:29,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:22:29,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:29,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:29,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:29,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492629302] [2020-09-25 04:22:29,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:22:29,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 04:22:29,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039190779] [2020-09-25 04:22:29,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:22:29,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:29,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:22:29,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:22:29,865 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-25 04:22:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:31,016 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-25 04:22:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:22:31,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-25 04:22:31,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:31,019 INFO L225 Difference]: With dead ends: 299 [2020-09-25 04:22:31,020 INFO L226 Difference]: Without dead ends: 295 [2020-09-25 04:22:31,021 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 [2020-09-25 04:22:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-25 04:22:31,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-25 04:22:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-25 04:22:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-25 04:22:31,037 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-25 04:22:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:31,037 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-25 04:22:31,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:22:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-25 04:22:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 04:22:31,039 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:31,039 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] [2020-09-25 04:22:31,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 04:22:31,039 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:31,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:31,040 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-25 04:22:31,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:31,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019324877] [2020-09-25 04:22:31,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:31,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:31,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:34,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:34,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 04:22:34,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:22:34,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3905 [2020-09-25 04:22:34,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:34,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:22:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 04:22:34,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 04:22:34,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:22:35,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:22:35,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:22:35,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:22:35,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:22:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:22:35,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:22:35,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:22:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:22:35,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:22:35,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019324877] [2020-09-25 04:22:35,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:22:35,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 04:22:35,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422620130] [2020-09-25 04:22:35,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 04:22:35,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:22:35,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 04:22:35,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 04:22:35,180 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 9 states. [2020-09-25 04:22:36,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:22:36,473 INFO L93 Difference]: Finished difference Result 498 states and 547 transitions. [2020-09-25 04:22:36,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 04:22:36,474 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-25 04:22:36,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:22:36,478 INFO L225 Difference]: With dead ends: 498 [2020-09-25 04:22:36,478 INFO L226 Difference]: Without dead ends: 304 [2020-09-25 04:22:36,479 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-09-25 04:22:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-25 04:22:36,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 277. [2020-09-25 04:22:36,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-25 04:22:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 300 transitions. [2020-09-25 04:22:36,496 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 300 transitions. Word has length 46 [2020-09-25 04:22:36,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:22:36,496 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 300 transitions. [2020-09-25 04:22:36,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 04:22:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 300 transitions. [2020-09-25 04:22:36,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 04:22:36,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:22:36,499 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] [2020-09-25 04:22:36,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 04:22:36,499 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:22:36,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:22:36,500 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-25 04:22:36,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:22:36,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147430992] [2020-09-25 04:22:36,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:22:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 04:22:36,522 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 04:22:36,522 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 04:22:36,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 04:22:36,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:22:36 BoogieIcfgContainer [2020-09-25 04:22:36,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:22:36,560 INFO L168 Benchmark]: Toolchain (without parser) took 17538.82 ms. Allocated memory was 137.9 MB in the beginning and 399.0 MB in the end (delta: 261.1 MB). Free memory was 99.5 MB in the beginning and 346.8 MB in the end (delta: -247.2 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,565 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,567 INFO L168 Benchmark]: CACSL2BoogieTranslator took 781.29 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 165.3 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,568 INFO L168 Benchmark]: Boogie Preprocessor took 91.51 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 161.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,569 INFO L168 Benchmark]: RCFGBuilder took 1073.33 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 161.1 MB in the beginning and 199.9 MB in the end (delta: -38.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,572 INFO L168 Benchmark]: TraceAbstraction took 15583.42 ms. Allocated memory was 230.7 MB in the beginning and 399.0 MB in the end (delta: 168.3 MB). Free memory was 198.5 MB in the beginning and 346.8 MB in the end (delta: -148.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:22:36,584 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 781.29 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 98.9 MB in the beginning and 165.3 MB in the end (delta: -66.4 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.51 ms. Allocated memory is still 200.8 MB. Free memory was 165.3 MB in the beginning and 161.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1073.33 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 161.1 MB in the beginning and 199.9 MB in the end (delta: -38.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15583.42 ms. Allocated memory was 230.7 MB in the beginning and 399.0 MB in the end (delta: 168.3 MB). Free memory was 198.5 MB in the beginning and 346.8 MB in the end (delta: -148.3 MB). Peak memory consumption was 20.0 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: 15.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1655 SDtfs, 1456 SDslu, 2402 SDs, 0 SdLazy, 3876 SolverSat, 180 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=277occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 195 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.7s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 44683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 8/10 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...