/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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 14:34:01,940 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:34:01,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:34:01,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:34:01,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:34:02,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:34:02,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:34:02,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:34:02,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:34:02,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:34:02,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:34:02,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:34:02,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:34:02,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:34:02,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:34:02,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:34:02,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:34:02,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:34:02,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:34:02,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:34:02,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:34:02,051 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:34:02,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:34:02,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:34:02,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:34:02,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:34:02,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:34:02,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:34:02,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:34:02,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:34:02,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:34:02,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:34:02,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:34:02,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:34:02,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:34:02,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:34:02,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:34:02,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:34:02,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:34:02,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:34:02,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:34:02,076 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 14:34:02,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:34:02,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:34:02,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:34:02,131 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:34:02,132 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:34:02,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:34:02,132 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:34:02,133 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:34:02,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:34:02,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:34:02,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:34:02,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:34:02,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:34:02,136 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:34:02,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:34:02,136 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:34:02,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:34:02,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:34:02,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:34:02,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:34:02,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:34:02,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:34:02,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:34:02,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:34:02,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:34:02,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:34:02,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:34:02,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:34:02,139 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:34:02,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:34:02,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:34:02,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:34:02,602 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:34:02,604 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:34:02,605 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:34:02,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 14:34:02,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd76e675/5e62a38a78f94a77994f53cd3ed46f97/FLAG4a0c1902b [2020-09-25 14:34:03,354 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:34:03,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-25 14:34:03,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd76e675/5e62a38a78f94a77994f53cd3ed46f97/FLAG4a0c1902b [2020-09-25 14:34:03,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6bd76e675/5e62a38a78f94a77994f53cd3ed46f97 [2020-09-25 14:34:03,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:34:03,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:34:03,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:03,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:34:03,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:34:03,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:03" (1/1) ... [2020-09-25 14:34:03,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67208b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:03, skipping insertion in model container [2020-09-25 14:34:03,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:34:03" (1/1) ... [2020-09-25 14:34:03,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:34:03,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:34:04,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:04,244 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:34:04,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:34:04,362 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:34:04,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04 WrapperNode [2020-09-25 14:34:04,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:34:04,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:34:04,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:34:04,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:34:04,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,432 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (1/1) ... [2020-09-25 14:34:04,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:34:04,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:34:04,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:34:04,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:34:04,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (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 14:34:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:34:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:34:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:34:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:34:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-25 14:34:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-25 14:34:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-25 14:34:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-25 14:34:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-25 14:34:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-25 14:34:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:34:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:34:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:34:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:34:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:34:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:34:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:34:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:34:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:34:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:34:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:34:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:34:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:34:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:34:04,604 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:34:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:34:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:34:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:34:04,605 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:34:04,606 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:34:04,607 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:34:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:34:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:34:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:34:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:34:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:34:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:34:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:34:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:34:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:34:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:34:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:34:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:34:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:34:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:34:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:34:04,617 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:34:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:34:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:34:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:34:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:34:04,618 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:34:04,619 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:34:04,620 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:34:04,621 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:34:04,622 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:34:04,623 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:34:04,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:34:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-25 14:34:04,625 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-25 14:34:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:34:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:34:04,626 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-25 14:34:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:34:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:34:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:34:04,627 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-25 14:34:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-25 14:34:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-25 14:34:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:34:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:34:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:34:04,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:34:04,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:34:05,523 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:34:05,524 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-25 14:34:05,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:05 BoogieIcfgContainer [2020-09-25 14:34:05,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:34:05,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:34:05,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:34:05,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:34:05,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:34:03" (1/3) ... [2020-09-25 14:34:05,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6d535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:05, skipping insertion in model container [2020-09-25 14:34:05,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:34:04" (2/3) ... [2020-09-25 14:34:05,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc6d535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:34:05, skipping insertion in model container [2020-09-25 14:34:05,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:34:05" (3/3) ... [2020-09-25 14:34:05,541 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-25 14:34:05,553 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:34:05,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:34:05,587 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:34:05,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:34:05,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:34:05,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:34:05,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:34:05,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:34:05,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:34:05,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:34:05,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:34:05,655 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-25 14:34:05,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 14:34:05,664 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:05,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:05,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:05,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-25 14:34:05,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:05,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699075433] [2020-09-25 14:34:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:05,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:05,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:34:06,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:06,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-25 14:34:06,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:34:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:34:06,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 14:34:06,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:34:06,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:06,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:06,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:06,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:06,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:34:06,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:06,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:06,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:06,366 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 14:34:06,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699075433] [2020-09-25 14:34:06,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:06,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:34:06,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267516738] [2020-09-25 14:34:06,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:34:06,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:06,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:34:06,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:34:06,399 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 4 states. [2020-09-25 14:34:07,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:07,034 INFO L93 Difference]: Finished difference Result 524 states and 685 transitions. [2020-09-25 14:34:07,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:34:07,036 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-25 14:34:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:07,074 INFO L225 Difference]: With dead ends: 524 [2020-09-25 14:34:07,075 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 14:34:07,082 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 14:34:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 14:34:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-09-25 14:34:07,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-25 14:34:07,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-09-25 14:34:07,161 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 15 [2020-09-25 14:34:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:07,161 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-09-25 14:34:07,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:34:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-09-25 14:34:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 14:34:07,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:07,163 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 14:34:07,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:34:07,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:07,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-09-25 14:34:07,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:07,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101643282] [2020-09-25 14:34:07,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:08,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:08,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 14:34:08,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:34:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-09-25 14:34:08,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:08,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:34:08,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 14:34:08,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:34:08,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:08,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:08,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:08,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:08,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:08,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:08,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:34:08,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:08,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:08,191 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 14:34:08,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101643282] [2020-09-25 14:34:08,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:08,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:34:08,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561789535] [2020-09-25 14:34:08,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:34:08,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:08,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:34:08,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:34:08,196 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 7 states. [2020-09-25 14:34:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:08,965 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2020-09-25 14:34:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:34:08,966 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 14:34:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:08,970 INFO L225 Difference]: With dead ends: 270 [2020-09-25 14:34:08,970 INFO L226 Difference]: Without dead ends: 265 [2020-09-25 14:34:08,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:34:08,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-25 14:34:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2020-09-25 14:34:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-25 14:34:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-25 14:34:08,995 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-09-25 14:34:08,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:08,996 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-25 14:34:08,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:34:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-25 14:34:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 14:34:08,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:08,997 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 14:34:08,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:34:08,998 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:08,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-25 14:34:08,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:08,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399131946] [2020-09-25 14:34:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:09,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:09,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:09,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:09,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:34:09,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-09-25 14:34:09,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:09,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:34:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:34:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 14:34:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:10,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:10,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:10,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:10,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:34:10,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:10,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:10,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:34:10,301 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 14:34:10,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399131946] [2020-09-25 14:34:10,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:10,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:34:10,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600486345] [2020-09-25 14:34:10,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:34:10,305 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:10,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:34:10,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:34:10,306 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 9 states. [2020-09-25 14:34:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:12,209 INFO L93 Difference]: Finished difference Result 390 states and 435 transitions. [2020-09-25 14:34:12,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:34:12,210 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 14:34:12,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:12,219 INFO L225 Difference]: With dead ends: 390 [2020-09-25 14:34:12,219 INFO L226 Difference]: Without dead ends: 386 [2020-09-25 14:34:12,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:34:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-09-25 14:34:12,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 303. [2020-09-25 14:34:12,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-09-25 14:34:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 337 transitions. [2020-09-25 14:34:12,268 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 337 transitions. Word has length 42 [2020-09-25 14:34:12,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:12,269 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 337 transitions. [2020-09-25 14:34:12,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:34:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 337 transitions. [2020-09-25 14:34:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 14:34:12,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:12,271 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 14:34:12,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:34:12,271 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:12,272 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-25 14:34:12,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:12,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579789135] [2020-09-25 14:34:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:12,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:12,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 14:34:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-09-25 14:34:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:34:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:34:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:34:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:13,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:13,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:13,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:13,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:13,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:13,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:13,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:34:13,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:13,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:13,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:13,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:13,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:13,156 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 14:34:13,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579789135] [2020-09-25 14:34:13,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:34:13,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:34:13,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607895621] [2020-09-25 14:34:13,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:34:13,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:13,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:34:13,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:34:13,159 INFO L87 Difference]: Start difference. First operand 303 states and 337 transitions. Second operand 9 states. [2020-09-25 14:34:14,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:14,442 INFO L93 Difference]: Finished difference Result 498 states and 552 transitions. [2020-09-25 14:34:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:34:14,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-09-25 14:34:14,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:14,445 INFO L225 Difference]: With dead ends: 498 [2020-09-25 14:34:14,445 INFO L226 Difference]: Without dead ends: 303 [2020-09-25 14:34:14,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:34:14,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-09-25 14:34:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2020-09-25 14:34:14,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 14:34:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 300 transitions. [2020-09-25 14:34:14,472 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 300 transitions. Word has length 42 [2020-09-25 14:34:14,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:14,472 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 300 transitions. [2020-09-25 14:34:14,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:34:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 300 transitions. [2020-09-25 14:34:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 14:34:14,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:14,474 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 14:34:14,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:34:14,475 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:14,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:14,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-25 14:34:14,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:14,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95524885] [2020-09-25 14:34:14,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:14,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-25 14:34:15,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:34:15,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 732 [2020-09-25 14:34:15,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:34:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:34:15,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:34:15,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:15,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:15,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:34:15,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:15,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:34:15,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:15,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:15,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:15,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:15,371 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 14:34:15,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95524885] [2020-09-25 14:34:15,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:15,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 14:34:15,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449553490] [2020-09-25 14:34:15,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:34:15,372 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:15,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:34:15,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:34:15,373 INFO L87 Difference]: Start difference. First operand 274 states and 300 transitions. Second operand 9 states. [2020-09-25 14:34:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:16,620 INFO L93 Difference]: Finished difference Result 343 states and 380 transitions. [2020-09-25 14:34:16,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 14:34:16,623 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-09-25 14:34:16,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:16,626 INFO L225 Difference]: With dead ends: 343 [2020-09-25 14:34:16,627 INFO L226 Difference]: Without dead ends: 339 [2020-09-25 14:34:16,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 14:34:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-09-25 14:34:16,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 281. [2020-09-25 14:34:16,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-09-25 14:34:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 307 transitions. [2020-09-25 14:34:16,646 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 307 transitions. Word has length 46 [2020-09-25 14:34:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:16,646 INFO L479 AbstractCegarLoop]: Abstraction has 281 states and 307 transitions. [2020-09-25 14:34:16,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:34:16,647 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 307 transitions. [2020-09-25 14:34:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 14:34:16,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:16,649 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 14:34:16,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:34:16,649 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-25 14:34:16,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:16,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527597725] [2020-09-25 14:34:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:16,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 14:34:16,672 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 14:34:16,673 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 14:34:16,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:34:16,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:34:16 BoogieIcfgContainer [2020-09-25 14:34:16,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:34:16,706 INFO L168 Benchmark]: Toolchain (without parser) took 13078.05 ms. Allocated memory was 142.1 MB in the beginning and 342.9 MB in the end (delta: 200.8 MB). Free memory was 102.8 MB in the beginning and 160.1 MB in the end (delta: -57.2 MB). Peak memory consumption was 143.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:16,707 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:34:16,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.82 ms. Allocated memory was 142.1 MB in the beginning and 206.6 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 171.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:16,709 INFO L168 Benchmark]: Boogie Preprocessor took 146.63 ms. Allocated memory is still 206.6 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:16,710 INFO L168 Benchmark]: RCFGBuilder took 1019.73 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 167.1 MB in the beginning and 196.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:16,711 INFO L168 Benchmark]: TraceAbstraction took 11169.70 ms. Allocated memory was 235.4 MB in the beginning and 342.9 MB in the end (delta: 107.5 MB). Free memory was 196.9 MB in the beginning and 160.1 MB in the end (delta: 36.9 MB). Peak memory consumption was 144.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:34:16,715 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.82 ms. Allocated memory was 142.1 MB in the beginning and 206.6 MB in the end (delta: 64.5 MB). Free memory was 102.2 MB in the beginning and 171.0 MB in the end (delta: -68.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.63 ms. Allocated memory is still 206.6 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1019.73 ms. Allocated memory was 206.6 MB in the beginning and 235.4 MB in the end (delta: 28.8 MB). Free memory was 167.1 MB in the beginning and 196.9 MB in the end (delta: -29.8 MB). Peak memory consumption was 76.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11169.70 ms. Allocated memory was 235.4 MB in the beginning and 342.9 MB in the end (delta: 107.5 MB). Free memory was 196.9 MB in the beginning and 160.1 MB in the end (delta: 36.9 MB). Peak memory consumption was 144.4 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: 11.0s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 5.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1210 SDtfs, 1438 SDslu, 2452 SDs, 0 SdLazy, 3928 SolverSat, 159 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=303occurred in iteration=3, 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, 5 MinimizatonAttempts, 231 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 173 ConstructedInterpolants, 0 QuantifiedInterpolants, 68097 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 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...