/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:00:34,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:00:34,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:00:34,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:00:34,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:00:34,789 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:00:34,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:00:34,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:00:34,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:00:34,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:00:34,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:00:34,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:00:34,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:00:34,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:00:34,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:00:34,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:00:34,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:00:34,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:00:34,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:00:34,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:00:34,827 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:00:34,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:00:34,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:00:34,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:00:34,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:00:34,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:00:34,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:00:34,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:00:34,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:00:34,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:00:34,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:00:34,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:00:34,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:00:34,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:00:34,851 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:00:34,851 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:00:34,852 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:00:34,852 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:00:34,852 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:00:34,853 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:00:34,854 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:00:34,855 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 16:00:34,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:00:34,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:00:34,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:00:34,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:00:34,882 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:00:34,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:00:34,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:00:34,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:00:34,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:00:34,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:00:34,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:00:34,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:00:34,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:00:34,884 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:00:34,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:00:34,884 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:00:34,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:00:34,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:00:34,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:00:34,885 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:00:34,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:00:34,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:34,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:00:34,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:00:34,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:00:34,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:00:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:00:34,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:00:34,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:00:34,887 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 16:00:35,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:00:35,392 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:00:35,396 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:00:35,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:00:35,399 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:00:35,400 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 16:00:35,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9df85e4/cf6afeb6ec214aa59f33274e61493895/FLAGece8da800 [2020-09-24 16:00:36,181 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:00:36,183 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/merge_sort-1.i [2020-09-24 16:00:36,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9df85e4/cf6afeb6ec214aa59f33274e61493895/FLAGece8da800 [2020-09-24 16:00:36,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f9df85e4/cf6afeb6ec214aa59f33274e61493895 [2020-09-24 16:00:36,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:00:36,407 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:00:36,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:36,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:00:36,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:00:36,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:36" (1/1) ... [2020-09-24 16:00:36,418 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 24.09 04:00:36, skipping insertion in model container [2020-09-24 16:00:36,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:00:36" (1/1) ... [2020-09-24 16:00:36,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:00:36,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:00:37,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:37,027 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:00:37,107 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:00:37,166 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:00:37,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37 WrapperNode [2020-09-24 16:00:37,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:00:37,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:00:37,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:00:37,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:00:37,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... [2020-09-24 16:00:37,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:00:37,268 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:00:37,268 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:00:37,268 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:00:37,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:00:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:00:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:00:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-24 16:00:37,344 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-24 16:00:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-09-24 16:00:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_single_node [2020-09-24 16:00:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure merge_pair [2020-09-24 16:00:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_sort_core [2020-09-24 16:00:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_before [2020-09-24 16:00:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect_after [2020-09-24 16:00:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:00:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:00:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-24 16:00:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-24 16:00:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-24 16:00:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-24 16:00:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-24 16:00:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-24 16:00:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-24 16:00:37,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-24 16:00:37,348 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-24 16:00:37,349 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-24 16:00:37,350 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-24 16:00:37,351 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-24 16:00:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-24 16:00:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-24 16:00:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-24 16:00:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-24 16:00:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-24 16:00:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-24 16:00:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 16:00:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-24 16:00:37,356 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-24 16:00:37,357 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-24 16:00:37,358 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-24 16:00:37,359 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-24 16:00:37,360 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-24 16:00:37,361 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-09-24 16:00:37,362 INFO L130 BoogieDeclarations]: Found specification of procedure merge_single_node [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure merge_pair [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:00:37,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:00:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure seq_sort_core [2020-09-24 16:00:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_before [2020-09-24 16:00:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure inspect_after [2020-09-24 16:00:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:00:37,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:00:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:00:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:00:37,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:00:38,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:00:38,214 INFO L295 CfgBuilder]: Removed 33 assume(true) statements. [2020-09-24 16:00:38,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:38 BoogieIcfgContainer [2020-09-24 16:00:38,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:00:38,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:00:38,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:00:38,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:00:38,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:00:36" (1/3) ... [2020-09-24 16:00:38,227 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 24.09 04:00:38, skipping insertion in model container [2020-09-24 16:00:38,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:00:37" (2/3) ... [2020-09-24 16:00:38,228 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 24.09 04:00:38, skipping insertion in model container [2020-09-24 16:00:38,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:00:38" (3/3) ... [2020-09-24 16:00:38,231 INFO L109 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2020-09-24 16:00:38,242 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:00:38,253 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:00:38,273 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:00:38,304 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:00:38,304 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:00:38,304 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:00:38,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:00:38,305 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:00:38,305 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:00:38,305 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:00:38,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:00:38,338 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-24 16:00:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-24 16:00:38,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:38,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:38,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash -2091922853, now seen corresponding path program 1 times [2020-09-24 16:00:38,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:38,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699075433] [2020-09-24 16:00:38,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:38,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:38,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:38,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:38,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 16:00:38,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:38,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 16:00:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 16:00:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:38,587 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:38,587 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:38,587 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:38,588 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:38,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:38,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:38,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:38,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:38,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:38,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:38,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699075433] [2020-09-24 16:00:38,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:38,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 16:00:38,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824786282] [2020-09-24 16:00:38,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 16:00:38,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:38,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 16:00:38,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 16:00:38,635 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 3 states. [2020-09-24 16:00:39,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:39,021 INFO L93 Difference]: Finished difference Result 521 states and 689 transitions. [2020-09-24 16:00:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 16:00:39,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-24 16:00:39,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:39,043 INFO L225 Difference]: With dead ends: 521 [2020-09-24 16:00:39,044 INFO L226 Difference]: Without dead ends: 252 [2020-09-24 16:00:39,052 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 [2020-09-24 16:00:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-24 16:00:39,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 224. [2020-09-24 16:00:39,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-09-24 16:00:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 247 transitions. [2020-09-24 16:00:39,155 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 247 transitions. Word has length 15 [2020-09-24 16:00:39,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:39,156 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 247 transitions. [2020-09-24 16:00:39,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 16:00:39,156 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 247 transitions. [2020-09-24 16:00:39,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 16:00:39,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:39,157 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:39,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:00:39,158 INFO L427 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:39,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:39,159 INFO L82 PathProgramCache]: Analyzing trace with hash 2028933562, now seen corresponding path program 1 times [2020-09-24 16:00:39,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:39,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599844301] [2020-09-24 16:00:39,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,217 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:39,217 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:39,218 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:39,218 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 16:00:39,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:00:39,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:00:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:00:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:00:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:39,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:39,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,263 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:39,263 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:39,263 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:39,264 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:39,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:39,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:39,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:39,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:39,276 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599844301] [2020-09-24 16:00:39,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:39,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 16:00:39,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255174927] [2020-09-24 16:00:39,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 16:00:39,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:39,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 16:00:39,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 16:00:39,279 INFO L87 Difference]: Start difference. First operand 224 states and 247 transitions. Second operand 4 states. [2020-09-24 16:00:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:39,801 INFO L93 Difference]: Finished difference Result 453 states and 502 transitions. [2020-09-24 16:00:39,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 16:00:39,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-24 16:00:39,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:39,804 INFO L225 Difference]: With dead ends: 453 [2020-09-24 16:00:39,804 INFO L226 Difference]: Without dead ends: 253 [2020-09-24 16:00:39,806 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 [2020-09-24 16:00:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-24 16:00:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 226. [2020-09-24 16:00:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-24 16:00:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 249 transitions. [2020-09-24 16:00:39,840 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 249 transitions. Word has length 17 [2020-09-24 16:00:39,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:39,841 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 249 transitions. [2020-09-24 16:00:39,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 16:00:39,841 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 249 transitions. [2020-09-24 16:00:39,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 16:00:39,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:39,842 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] [2020-09-24 16:00:39,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:00:39,843 INFO L427 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1052511289, now seen corresponding path program 1 times [2020-09-24 16:00:39,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:39,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1767161855] [2020-09-24 16:00:39,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:39,980 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:00:39,980 FATAL L256 erpolLogProxyWrapper]: Difference in depth: -2 [2020-09-24 16:00:39,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 2 [2020-09-24 16:00:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:39,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 16:00:39,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 16:00:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:00:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-24 16:00:39,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 16:00:39,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 16:00:40,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:40,133 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:40,134 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:40,134 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:40,134 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:40,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:40,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:40,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:40,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:40,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:40,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:40,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:40,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:40,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1767161855] [2020-09-24 16:00:40,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:40,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 16:00:40,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11305928] [2020-09-24 16:00:40,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 16:00:40,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:40,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 16:00:40,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 16:00:40,147 INFO L87 Difference]: Start difference. First operand 226 states and 249 transitions. Second operand 7 states. [2020-09-24 16:00:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:40,915 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2020-09-24 16:00:40,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 16:00:40,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 16:00:40,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:40,919 INFO L225 Difference]: With dead ends: 270 [2020-09-24 16:00:40,919 INFO L226 Difference]: Without dead ends: 265 [2020-09-24 16:00:40,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:00:40,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-09-24 16:00:40,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 231. [2020-09-24 16:00:40,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-24 16:00:40,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 254 transitions. [2020-09-24 16:00:40,936 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 254 transitions. Word has length 33 [2020-09-24 16:00:40,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:40,937 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 254 transitions. [2020-09-24 16:00:40,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 16:00:40,937 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 254 transitions. [2020-09-24 16:00:40,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:00:40,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:40,939 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] [2020-09-24 16:00:40,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:00:40,939 INFO L427 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:40,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:40,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1386814406, now seen corresponding path program 1 times [2020-09-24 16:00:40,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:40,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018505720] [2020-09-24 16:00:40,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:40,975 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:40,975 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:40,976 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:00:40,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,085 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:41,086 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,086 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,086 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:41,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:41,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:41,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:41,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:41,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018505720] [2020-09-24 16:00:41,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:41,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:41,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681231409] [2020-09-24 16:00:41,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:41,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:41,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:41,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:41,097 INFO L87 Difference]: Start difference. First operand 231 states and 254 transitions. Second operand 6 states. [2020-09-24 16:00:41,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:41,746 INFO L93 Difference]: Finished difference Result 248 states and 273 transitions. [2020-09-24 16:00:41,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 16:00:41,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-24 16:00:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:41,749 INFO L225 Difference]: With dead ends: 248 [2020-09-24 16:00:41,750 INFO L226 Difference]: Without dead ends: 244 [2020-09-24 16:00:41,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-24 16:00:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-09-24 16:00:41,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 229. [2020-09-24 16:00:41,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-24 16:00:41,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 251 transitions. [2020-09-24 16:00:41,764 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 251 transitions. Word has length 42 [2020-09-24 16:00:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:41,764 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 251 transitions. [2020-09-24 16:00:41,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 251 transitions. [2020-09-24 16:00:41,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-24 16:00:41,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:41,766 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] [2020-09-24 16:00:41,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:00:41,767 INFO L427 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:41,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:41,767 INFO L82 PathProgramCache]: Analyzing trace with hash 527521680, now seen corresponding path program 1 times [2020-09-24 16:00:41,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:41,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844120011] [2020-09-24 16:00:41,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,798 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 16:00:41,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:00:41,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:00:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 16:00:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:00:41,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:41,871 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:41,871 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:41,872 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:41,872 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:41,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:41,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:41,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:41,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:41,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:41,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 16:00:41,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844120011] [2020-09-24 16:00:41,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:41,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 16:00:41,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62949859] [2020-09-24 16:00:41,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 16:00:41,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:41,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 16:00:41,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 16:00:41,882 INFO L87 Difference]: Start difference. First operand 229 states and 251 transitions. Second operand 6 states. [2020-09-24 16:00:42,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:42,623 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-09-24 16:00:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 16:00:42,624 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-09-24 16:00:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:42,626 INFO L225 Difference]: With dead ends: 246 [2020-09-24 16:00:42,626 INFO L226 Difference]: Without dead ends: 242 [2020-09-24 16:00:42,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:00:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-24 16:00:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 227. [2020-09-24 16:00:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-24 16:00:42,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 248 transitions. [2020-09-24 16:00:42,643 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 248 transitions. Word has length 42 [2020-09-24 16:00:42,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:42,646 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 248 transitions. [2020-09-24 16:00:42,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 16:00:42,646 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 248 transitions. [2020-09-24 16:00:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:00:42,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:42,654 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:42,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:00:42,655 INFO L427 AbstractCegarLoop]: === Iteration 6 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1598586176, now seen corresponding path program 1 times [2020-09-24 16:00:42,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:42,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863479462] [2020-09-24 16:00:42,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:42,794 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:42,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:42,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:42,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:42,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 16:00:42,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:42,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 16:00:42,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:42,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:00:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:00:42,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:00:42,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:42,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:42,956 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:42,956 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:42,956 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:42,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 16:00:42,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:42,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863479462] [2020-09-24 16:00:42,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:42,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 16:00:42,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515975044] [2020-09-24 16:00:42,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:00:42,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:42,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:00:42,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:00:42,974 INFO L87 Difference]: Start difference. First operand 227 states and 248 transitions. Second operand 10 states. [2020-09-24 16:00:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:44,015 INFO L93 Difference]: Finished difference Result 299 states and 329 transitions. [2020-09-24 16:00:44,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:00:44,015 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 16:00:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:44,018 INFO L225 Difference]: With dead ends: 299 [2020-09-24 16:00:44,018 INFO L226 Difference]: Without dead ends: 295 [2020-09-24 16:00:44,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:00:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-24 16:00:44,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 234. [2020-09-24 16:00:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-09-24 16:00:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 255 transitions. [2020-09-24 16:00:44,048 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 255 transitions. Word has length 46 [2020-09-24 16:00:44,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:44,049 INFO L479 AbstractCegarLoop]: Abstraction has 234 states and 255 transitions. [2020-09-24 16:00:44,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:00:44,049 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 255 transitions. [2020-09-24 16:00:44,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 16:00:44,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:44,050 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:44,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:44,051 INFO L427 AbstractCegarLoop]: === Iteration 7 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:44,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:44,051 INFO L82 PathProgramCache]: Analyzing trace with hash 180139286, now seen corresponding path program 1 times [2020-09-24 16:00:44,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:44,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834496593] [2020-09-24 16:00:44,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,123 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,123 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,124 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,124 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 16:00:44,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-24 16:00:44,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:00:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 16:00:44,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:00:44,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:44,262 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:44,262 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:44,263 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:44,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:44,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:44,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:44,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:44,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834496593] [2020-09-24 16:00:44,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:00:44,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 16:00:44,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013419427] [2020-09-24 16:00:44,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 16:00:44,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:44,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 16:00:44,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-09-24 16:00:44,274 INFO L87 Difference]: Start difference. First operand 234 states and 255 transitions. Second operand 10 states. [2020-09-24 16:00:45,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:45,423 INFO L93 Difference]: Finished difference Result 297 states and 326 transitions. [2020-09-24 16:00:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 16:00:45,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 46 [2020-09-24 16:00:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:45,427 INFO L225 Difference]: With dead ends: 297 [2020-09-24 16:00:45,427 INFO L226 Difference]: Without dead ends: 293 [2020-09-24 16:00:45,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-24 16:00:45,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-09-24 16:00:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 241. [2020-09-24 16:00:45,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-09-24 16:00:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 262 transitions. [2020-09-24 16:00:45,441 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 262 transitions. Word has length 46 [2020-09-24 16:00:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:45,442 INFO L479 AbstractCegarLoop]: Abstraction has 241 states and 262 transitions. [2020-09-24 16:00:45,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 16:00:45,442 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 262 transitions. [2020-09-24 16:00:45,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 16:00:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:45,444 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:45,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:45,444 INFO L427 AbstractCegarLoop]: === Iteration 8 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:45,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 797684937, now seen corresponding path program 1 times [2020-09-24 16:00:45,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:45,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366246286] [2020-09-24 16:00:45,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:00:45,489 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:00:45,490 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:00:45,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:45,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:00:45 BoogieIcfgContainer [2020-09-24 16:00:45,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:00:45,523 INFO L168 Benchmark]: Toolchain (without parser) took 9117.08 ms. Allocated memory was 147.8 MB in the beginning and 313.0 MB in the end (delta: 165.2 MB). Free memory was 102.8 MB in the beginning and 276.2 MB in the end (delta: -173.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:45,524 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:45,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 758.50 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 169.4 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,526 INFO L168 Benchmark]: Boogie Preprocessor took 100.31 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 165.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,527 INFO L168 Benchmark]: RCFGBuilder took 953.14 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 165.5 MB in the beginning and 197.2 MB in the end (delta: -31.6 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:00:45,527 INFO L168 Benchmark]: TraceAbstraction took 7297.07 ms. Allocated memory was 235.9 MB in the beginning and 313.0 MB in the end (delta: 77.1 MB). Free memory was 197.2 MB in the beginning and 276.2 MB in the end (delta: -79.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 16:00:45,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 758.50 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 102.2 MB in the beginning and 169.4 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.31 ms. Allocated memory is still 205.0 MB. Free memory was 169.4 MB in the beginning and 165.5 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 953.14 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 165.5 MB in the beginning and 197.2 MB in the end (delta: -31.6 MB). Peak memory consumption was 77.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7297.07 ms. Allocated memory was 235.9 MB in the beginning and 313.0 MB in the end (delta: 77.1 MB). Free memory was 197.2 MB in the beginning and 276.2 MB in the end (delta: -79.1 MB). There was no memory consumed. 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: 7.1s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1652 SDtfs, 1672 SDslu, 2446 SDs, 0 SdLazy, 4007 SolverSat, 205 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=248occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 232 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 293 NumberOfCodeBlocks, 293 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 38528 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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...