/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:47,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:47,256 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:47,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:47,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:47,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:47,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:47,319 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:47,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:47,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:47,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:47,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:47,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:47,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:47,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:47,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:47,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:47,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:47,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:47,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:47,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:47,354 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:47,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:47,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:47,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:47,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:47,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:47,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:47,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:47,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:47,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:47,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:47,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:47,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:47,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:47,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:47,388 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:47,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:47,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:47,390 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:47,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:47,392 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 00:58:47,437 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:47,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:47,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:47,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:47,440 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:47,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:47,440 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:47,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:47,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:47,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:47,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:47,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:47,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:47,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:47,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:47,443 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:47,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:47,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:47,444 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:47,444 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:47,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:47,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:47,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:47,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:47,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:47,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:47,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:47,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:47,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:47,446 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:58:47,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:47,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:47,948 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:47,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:47,951 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:47,952 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 00:58:48,042 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353b7933f/ebd474f5fe0d45a7a6b061d9c48070cf/FLAG03f6a128e [2020-09-25 00:58:48,676 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:48,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-09-25 00:58:48,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353b7933f/ebd474f5fe0d45a7a6b061d9c48070cf/FLAG03f6a128e [2020-09-25 00:58:48,934 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/353b7933f/ebd474f5fe0d45a7a6b061d9c48070cf [2020-09-25 00:58:48,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:48,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:48,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:48,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:48,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:48,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dadf5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:48, skipping insertion in model container [2020-09-25 00:58:48,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:48" (1/1) ... [2020-09-25 00:58:48,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:49,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:49,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:49,544 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:49,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:49,716 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:49,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49 WrapperNode [2020-09-25 00:58:49,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:49,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:49,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:49,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:49,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (1/1) ... [2020-09-25 00:58:49,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:49,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:49,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:49,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:49,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (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 00:58:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:49,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 00:58:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 00:58:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 00:58:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 00:58:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 00:58:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 00:58:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 00:58:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 00:58:49,920 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 00:58:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 00:58:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 00:58:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 00:58:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 00:58:49,921 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 00:58:49,922 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 00:58:49,923 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:58:49,924 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 00:58:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 00:58:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 00:58:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 00:58:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 00:58:49,925 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 00:58:49,926 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 00:58:49,927 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 00:58:49,928 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 00:58:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 00:58:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 00:58:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 00:58:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 00:58:49,931 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 00:58:49,932 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 00:58:49,933 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:58:49,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 00:58:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 00:58:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:49,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:50,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:50,642 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-25 00:58:50,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:50 BoogieIcfgContainer [2020-09-25 00:58:50,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:50,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:50,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:50,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:50,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:48" (1/3) ... [2020-09-25 00:58:50,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ca2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:50, skipping insertion in model container [2020-09-25 00:58:50,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:49" (2/3) ... [2020-09-25 00:58:50,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755ca2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:50, skipping insertion in model container [2020-09-25 00:58:50,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:50" (3/3) ... [2020-09-25 00:58:50,665 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-09-25 00:58:50,683 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:50,694 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-25 00:58:50,718 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-25 00:58:50,766 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:50,766 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:50,767 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:50,767 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:50,767 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:50,767 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:50,767 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:50,768 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-25 00:58:50,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 00:58:50,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:50,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:50,826 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:50,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:50,834 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-09-25 00:58:50,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:50,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485757734] [2020-09-25 00:58:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 00:58:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 00:58:51,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:58:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:58:51,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 00:58:51,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:58:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:51,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:51,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:51,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:58:51,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:51,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:51,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:51,338 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 00:58:51,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485757734] [2020-09-25 00:58:51,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:51,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:58:51,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321919946] [2020-09-25 00:58:51,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:58:51,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:51,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:58:51,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:58:51,371 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-25 00:58:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:51,767 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-09-25 00:58:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:58:51,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-25 00:58:51,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:51,786 INFO L225 Difference]: With dead ends: 360 [2020-09-25 00:58:51,786 INFO L226 Difference]: Without dead ends: 194 [2020-09-25 00:58:51,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:58:51,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-25 00:58:51,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-25 00:58:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-25 00:58:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-09-25 00:58:51,861 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-09-25 00:58:51,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:51,862 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-09-25 00:58:51,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:58:51,862 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-09-25 00:58:51,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 00:58:51,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:51,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:51,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:51,864 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:51,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-09-25 00:58:51,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:51,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509638004] [2020-09-25 00:58:51,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:52,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 00:58:52,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:52,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-09-25 00:58:52,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 00:58:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:58:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:58:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:52,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:52,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:52,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 00:58:52,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:52,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:52,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:52,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:52,288 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 00:58:52,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509638004] [2020-09-25 00:58:52,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:52,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:52,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544732442] [2020-09-25 00:58:52,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:52,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:52,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:52,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:52,294 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-09-25 00:58:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:52,639 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-09-25 00:58:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:52,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-09-25 00:58:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:52,644 INFO L225 Difference]: With dead ends: 170 [2020-09-25 00:58:52,645 INFO L226 Difference]: Without dead ends: 165 [2020-09-25 00:58:52,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:52,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-25 00:58:52,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-25 00:58:52,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-25 00:58:52,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-09-25 00:58:52,661 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-09-25 00:58:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:52,661 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-09-25 00:58:52,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-09-25 00:58:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 00:58:52,663 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:52,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:52,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:58:52,663 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:52,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:52,664 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-09-25 00:58:52,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:52,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938708902] [2020-09-25 00:58:52,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:52,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:52,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:52,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:58:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-09-25 00:58:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:58:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 00:58:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:58:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:53,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:53,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:53,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:53,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:53,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:58:53,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:53,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:53,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:53,141 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 00:58:53,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938708902] [2020-09-25 00:58:53,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:53,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:58:53,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538740378] [2020-09-25 00:58:53,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:58:53,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:53,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:58:53,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:58:53,144 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-09-25 00:58:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:53,653 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2020-09-25 00:58:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:58:53,654 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-09-25 00:58:53,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:53,658 INFO L225 Difference]: With dead ends: 258 [2020-09-25 00:58:53,659 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 00:58:53,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:58:53,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 00:58:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2020-09-25 00:58:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-25 00:58:53,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-09-25 00:58:53,683 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-09-25 00:58:53,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:53,684 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-09-25 00:58:53,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:58:53,684 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-09-25 00:58:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 00:58:53,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:53,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:53,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:58:53,686 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:53,686 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-09-25 00:58:53,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:53,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580347417] [2020-09-25 00:58:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:53,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:53,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:54,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 00:58:54,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:58:54,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-09-25 00:58:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:58:54,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 00:58:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 00:58:54,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:54,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:58:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:54,304 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 00:58:54,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580347417] [2020-09-25 00:58:54,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:54,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 00:58:54,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201951460] [2020-09-25 00:58:54,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:58:54,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:54,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:58:54,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:58:54,307 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-09-25 00:58:54,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:54,742 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-09-25 00:58:54,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:58:54,743 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-09-25 00:58:54,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:54,745 INFO L225 Difference]: With dead ends: 382 [2020-09-25 00:58:54,745 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 00:58:54,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:58:54,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 00:58:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-09-25 00:58:54,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 00:58:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-09-25 00:58:54,759 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-09-25 00:58:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:54,760 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-09-25 00:58:54,760 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:58:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-09-25 00:58:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:58:54,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:54,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:54,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:58:54,762 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:54,763 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-09-25 00:58:54,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:54,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144499974] [2020-09-25 00:58:54,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:54,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:54,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:55,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 00:58:55,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:58:55,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-09-25 00:58:55,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:55,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:58:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 00:58:55,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:58:55,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:55,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:55,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:55,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:55,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:55,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:58:55,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:55,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:55,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:55,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:55,080 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 00:58:55,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144499974] [2020-09-25 00:58:55,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:55,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:58:55,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029841414] [2020-09-25 00:58:55,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:58:55,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:55,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:58:55,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:58:55,084 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 5 states. [2020-09-25 00:58:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:55,373 INFO L93 Difference]: Finished difference Result 192 states and 205 transitions. [2020-09-25 00:58:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:58:55,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-09-25 00:58:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:55,375 INFO L225 Difference]: With dead ends: 192 [2020-09-25 00:58:55,376 INFO L226 Difference]: Without dead ends: 158 [2020-09-25 00:58:55,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:58:55,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-25 00:58:55,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2020-09-25 00:58:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 00:58:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-09-25 00:58:55,395 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 34 [2020-09-25 00:58:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:55,395 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-09-25 00:58:55,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:58:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-09-25 00:58:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 00:58:55,397 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:55,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:55,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:58:55,399 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:55,399 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-09-25 00:58:55,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:55,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045338618] [2020-09-25 00:58:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:55,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:55,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 00:58:55,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 00:58:55,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:58:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 00:58:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:58:55,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:55,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:55,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:55,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:55,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:55,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:55,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:58:55,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:55,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:55,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:55,744 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 00:58:55,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045338618] [2020-09-25 00:58:55,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:55,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 00:58:55,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248779582] [2020-09-25 00:58:55,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:58:55,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:55,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:58:55,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:58:55,747 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 7 states. [2020-09-25 00:58:56,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:56,374 INFO L93 Difference]: Finished difference Result 239 states and 255 transitions. [2020-09-25 00:58:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:58:56,374 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-09-25 00:58:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:56,378 INFO L225 Difference]: With dead ends: 239 [2020-09-25 00:58:56,378 INFO L226 Difference]: Without dead ends: 237 [2020-09-25 00:58:56,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:58:56,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-09-25 00:58:56,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 155. [2020-09-25 00:58:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 00:58:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 165 transitions. [2020-09-25 00:58:56,386 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 165 transitions. Word has length 38 [2020-09-25 00:58:56,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:56,387 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 165 transitions. [2020-09-25 00:58:56,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:58:56,388 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 165 transitions. [2020-09-25 00:58:56,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 00:58:56,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:56,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:56,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:58:56,394 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:56,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-09-25 00:58:56,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:56,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152803748] [2020-09-25 00:58:56,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:56,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:56,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 00:58:56,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:56,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 00:58:56,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 00:58:56,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:58:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:56,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:56,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:56,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:58:56,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:56,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:56,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:56,521 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 00:58:56,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152803748] [2020-09-25 00:58:56,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:56,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:56,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414159239] [2020-09-25 00:58:56,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:56,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:56,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:56,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:56,523 INFO L87 Difference]: Start difference. First operand 155 states and 165 transitions. Second operand 4 states. [2020-09-25 00:58:56,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:56,771 INFO L93 Difference]: Finished difference Result 195 states and 209 transitions. [2020-09-25 00:58:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:56,773 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-25 00:58:56,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:56,774 INFO L225 Difference]: With dead ends: 195 [2020-09-25 00:58:56,775 INFO L226 Difference]: Without dead ends: 193 [2020-09-25 00:58:56,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:56,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-09-25 00:58:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 157. [2020-09-25 00:58:56,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-09-25 00:58:56,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 168 transitions. [2020-09-25 00:58:56,781 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 168 transitions. Word has length 42 [2020-09-25 00:58:56,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:56,782 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 168 transitions. [2020-09-25 00:58:56,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:56,782 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 168 transitions. [2020-09-25 00:58:56,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 00:58:56,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:56,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:56,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:58:56,784 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:56,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-09-25 00:58:56,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:56,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020532687] [2020-09-25 00:58:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:56,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:57,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 00:58:57,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:58:57,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-09-25 00:58:57,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:58:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 00:58:57,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 00:58:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:58:57,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:57,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:57,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:57,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:58:57,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:57,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:57,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:57,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:57,591 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 00:58:57,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020532687] [2020-09-25 00:58:57,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:57,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:58:57,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216510546] [2020-09-25 00:58:57,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:58:57,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:57,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:58:57,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:57,594 INFO L87 Difference]: Start difference. First operand 157 states and 168 transitions. Second operand 4 states. [2020-09-25 00:58:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:57,826 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2020-09-25 00:58:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:58:57,827 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-09-25 00:58:57,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:57,828 INFO L225 Difference]: With dead ends: 157 [2020-09-25 00:58:57,828 INFO L226 Difference]: Without dead ends: 155 [2020-09-25 00:58:57,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:58:57,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-25 00:58:57,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-25 00:58:57,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-25 00:58:57,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 166 transitions. [2020-09-25 00:58:57,835 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 166 transitions. Word has length 44 [2020-09-25 00:58:57,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:57,836 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 166 transitions. [2020-09-25 00:58:57,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:58:57,836 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 166 transitions. [2020-09-25 00:58:57,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 00:58:57,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:57,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:57,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:58:57,838 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:57,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-09-25 00:58:57,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:57,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780517749] [2020-09-25 00:58:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:57,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:57,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:00,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:00,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:59:00,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:59:00,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2217 [2020-09-25 00:59:00,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:59:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-09-25 00:59:00,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 00:59:00,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:00,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:00,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:00,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:00,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:00,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:00,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:59:00,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:00,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:00,335 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 00:59:00,342 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780517749] [2020-09-25 00:59:00,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:00,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 00:59:00,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685118300] [2020-09-25 00:59:00,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:59:00,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:00,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:59:00,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:59:00,347 INFO L87 Difference]: Start difference. First operand 155 states and 166 transitions. Second operand 9 states. [2020-09-25 00:59:01,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:01,218 INFO L93 Difference]: Finished difference Result 349 states and 376 transitions. [2020-09-25 00:59:01,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:59:01,219 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2020-09-25 00:59:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:01,221 INFO L225 Difference]: With dead ends: 349 [2020-09-25 00:59:01,221 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 00:59:01,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:59:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 00:59:01,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 174. [2020-09-25 00:59:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 00:59:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 186 transitions. [2020-09-25 00:59:01,233 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 186 transitions. Word has length 48 [2020-09-25 00:59:01,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:01,234 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 186 transitions. [2020-09-25 00:59:01,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:59:01,234 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 186 transitions. [2020-09-25 00:59:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:59:01,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:01,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:01,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:59:01,237 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:01,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:01,237 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-09-25 00:59:01,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:01,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213400289] [2020-09-25 00:59:01,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:01,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:59:01,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 00:59:01,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:59:01,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:01,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:01,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:01,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:01,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:01,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:01,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:59:01,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:01,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:01,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:01,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:01,516 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 00:59:01,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213400289] [2020-09-25 00:59:01,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:01,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:59:01,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014001808] [2020-09-25 00:59:01,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:59:01,518 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:01,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:59:01,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:01,519 INFO L87 Difference]: Start difference. First operand 174 states and 186 transitions. Second operand 4 states. [2020-09-25 00:59:01,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:01,719 INFO L93 Difference]: Finished difference Result 180 states and 192 transitions. [2020-09-25 00:59:01,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:59:01,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-09-25 00:59:01,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:01,721 INFO L225 Difference]: With dead ends: 180 [2020-09-25 00:59:01,721 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 00:59:01,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:01,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 00:59:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-09-25 00:59:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 00:59:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 187 transitions. [2020-09-25 00:59:01,733 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 187 transitions. Word has length 52 [2020-09-25 00:59:01,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:01,734 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 187 transitions. [2020-09-25 00:59:01,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:59:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 187 transitions. [2020-09-25 00:59:01,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 00:59:01,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:01,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:01,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:59:01,737 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:01,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:01,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-09-25 00:59:01,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:01,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888882597] [2020-09-25 00:59:01,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:02,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:04,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:05,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:05,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 00:59:05,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:59:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3266 [2020-09-25 00:59:05,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:59:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 00:59:05,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 00:59:05,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:05,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:05,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:05,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:05,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:05,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:59:05,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:05,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:05,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:05,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:05,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888882597] [2020-09-25 00:59:05,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:05,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 00:59:05,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438796] [2020-09-25 00:59:05,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:59:05,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:05,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:59:05,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:59:05,362 INFO L87 Difference]: Start difference. First operand 175 states and 187 transitions. Second operand 12 states. [2020-09-25 00:59:06,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:06,563 INFO L93 Difference]: Finished difference Result 451 states and 484 transitions. [2020-09-25 00:59:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:59:06,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 00:59:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:06,569 INFO L225 Difference]: With dead ends: 451 [2020-09-25 00:59:06,569 INFO L226 Difference]: Without dead ends: 448 [2020-09-25 00:59:06,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=370, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:59:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-25 00:59:06,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 195. [2020-09-25 00:59:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-25 00:59:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 210 transitions. [2020-09-25 00:59:06,590 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 210 transitions. Word has length 53 [2020-09-25 00:59:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:06,590 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 210 transitions. [2020-09-25 00:59:06,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:59:06,591 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 210 transitions. [2020-09-25 00:59:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 00:59:06,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:06,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:06,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:59:06,592 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:06,593 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-09-25 00:59:06,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:06,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199674410] [2020-09-25 00:59:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 00:59:06,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-09-25 00:59:06,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 00:59:06,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:59:06,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:06,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:06,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:06,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:06,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:06,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:06,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:06,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:06,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:07,000 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 00:59:07,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199674410] [2020-09-25 00:59:07,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:07,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:59:07,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563448727] [2020-09-25 00:59:07,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:59:07,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:07,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:59:07,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:59:07,003 INFO L87 Difference]: Start difference. First operand 195 states and 210 transitions. Second operand 8 states. [2020-09-25 00:59:07,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:07,499 INFO L93 Difference]: Finished difference Result 213 states and 230 transitions. [2020-09-25 00:59:07,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:59:07,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-25 00:59:07,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:07,502 INFO L225 Difference]: With dead ends: 213 [2020-09-25 00:59:07,502 INFO L226 Difference]: Without dead ends: 208 [2020-09-25 00:59:07,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 00:59:07,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-09-25 00:59:07,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 189. [2020-09-25 00:59:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-09-25 00:59:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 204 transitions. [2020-09-25 00:59:07,511 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 204 transitions. Word has length 54 [2020-09-25 00:59:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:07,511 INFO L479 AbstractCegarLoop]: Abstraction has 189 states and 204 transitions. [2020-09-25 00:59:07,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:59:07,512 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 204 transitions. [2020-09-25 00:59:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 00:59:07,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:07,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:07,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 00:59:07,513 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:07,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-09-25 00:59:07,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:07,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077347628] [2020-09-25 00:59:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:07,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:07,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:08,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:11,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:11,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:59:11,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:59:11,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3899 [2020-09-25 00:59:11,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:11,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:59:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 00:59:11,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 00:59:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:12,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:12,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:12,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:59:12,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:12,218 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 00:59:12,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077347628] [2020-09-25 00:59:12,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:12,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 00:59:12,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716286108] [2020-09-25 00:59:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:59:12,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:12,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:59:12,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:59:12,221 INFO L87 Difference]: Start difference. First operand 189 states and 204 transitions. Second operand 12 states. [2020-09-25 00:59:13,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:13,445 INFO L93 Difference]: Finished difference Result 442 states and 475 transitions. [2020-09-25 00:59:13,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:59:13,446 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-09-25 00:59:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:13,448 INFO L225 Difference]: With dead ends: 442 [2020-09-25 00:59:13,448 INFO L226 Difference]: Without dead ends: 439 [2020-09-25 00:59:13,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 00:59:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-25 00:59:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 193. [2020-09-25 00:59:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 00:59:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 208 transitions. [2020-09-25 00:59:13,468 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 208 transitions. Word has length 57 [2020-09-25 00:59:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:13,468 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 208 transitions. [2020-09-25 00:59:13,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:59:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 208 transitions. [2020-09-25 00:59:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 00:59:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:13,469 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:13,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 00:59:13,470 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:13,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1845748070, now seen corresponding path program 1 times [2020-09-25 00:59:13,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:13,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347928780] [2020-09-25 00:59:13,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:13,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:13,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:13,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:13,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:14,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 00:59:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 00:59:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3109 [2020-09-25 00:59:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:59:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 00:59:16,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 00:59:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:16,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:16,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:16,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:16,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:16,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:16,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347928780] [2020-09-25 00:59:16,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:16,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:59:16,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520749758] [2020-09-25 00:59:16,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:59:16,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:16,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:59:16,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:59:16,733 INFO L87 Difference]: Start difference. First operand 193 states and 208 transitions. Second operand 9 states. [2020-09-25 00:59:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:17,718 INFO L93 Difference]: Finished difference Result 449 states and 486 transitions. [2020-09-25 00:59:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:59:17,724 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-09-25 00:59:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:17,726 INFO L225 Difference]: With dead ends: 449 [2020-09-25 00:59:17,726 INFO L226 Difference]: Without dead ends: 380 [2020-09-25 00:59:17,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2020-09-25 00:59:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-25 00:59:17,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 271. [2020-09-25 00:59:17,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-09-25 00:59:17,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 298 transitions. [2020-09-25 00:59:17,741 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 298 transitions. Word has length 57 [2020-09-25 00:59:17,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:17,741 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 298 transitions. [2020-09-25 00:59:17,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:59:17,741 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 298 transitions. [2020-09-25 00:59:17,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 00:59:17,742 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:17,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-09-25 00:59:17,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 00:59:17,743 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:17,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:17,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-09-25 00:59:17,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:17,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652081410] [2020-09-25 00:59:17,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:17,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:17,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:17,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-25 00:59:17,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:17,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 00:59:17,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:59:17,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:59:17,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 00:59:17,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:18,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:18,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652081410] [2020-09-25 00:59:18,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:18,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:59:18,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311791399] [2020-09-25 00:59:18,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:59:18,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:18,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:59:18,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:59:18,061 INFO L87 Difference]: Start difference. First operand 271 states and 298 transitions. Second operand 7 states. [2020-09-25 00:59:18,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:18,580 INFO L93 Difference]: Finished difference Result 471 states and 519 transitions. [2020-09-25 00:59:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:59:18,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-09-25 00:59:18,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:18,582 INFO L225 Difference]: With dead ends: 471 [2020-09-25 00:59:18,583 INFO L226 Difference]: Without dead ends: 364 [2020-09-25 00:59:18,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:59:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-09-25 00:59:18,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 317. [2020-09-25 00:59:18,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-09-25 00:59:18,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 351 transitions. [2020-09-25 00:59:18,599 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 351 transitions. Word has length 59 [2020-09-25 00:59:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:18,599 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 351 transitions. [2020-09-25 00:59:18,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:59:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 351 transitions. [2020-09-25 00:59:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 00:59:18,600 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:18,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:18,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-25 00:59:18,601 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:18,601 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-09-25 00:59:18,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:18,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376755900] [2020-09-25 00:59:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:59:18,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-25 00:59:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:59:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-25 00:59:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:59:18,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:18,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:18,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:18,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:18,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:59:18,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:18,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:18,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:59:18,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:18,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376755900] [2020-09-25 00:59:18,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:18,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:59:18,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235947316] [2020-09-25 00:59:18,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:59:18,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:18,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:59:18,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:18,836 INFO L87 Difference]: Start difference. First operand 317 states and 351 transitions. Second operand 4 states. [2020-09-25 00:59:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:19,122 INFO L93 Difference]: Finished difference Result 569 states and 642 transitions. [2020-09-25 00:59:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:59:19,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 00:59:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:19,125 INFO L225 Difference]: With dead ends: 569 [2020-09-25 00:59:19,126 INFO L226 Difference]: Without dead ends: 435 [2020-09-25 00:59:19,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-25 00:59:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 374. [2020-09-25 00:59:19,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-25 00:59:19,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 417 transitions. [2020-09-25 00:59:19,144 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 417 transitions. Word has length 64 [2020-09-25 00:59:19,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:19,145 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 417 transitions. [2020-09-25 00:59:19,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:59:19,145 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 417 transitions. [2020-09-25 00:59:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 00:59:19,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:19,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:19,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-25 00:59:19,147 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1878952235, now seen corresponding path program 1 times [2020-09-25 00:59:19,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:19,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268961065] [2020-09-25 00:59:19,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:19,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 00:59:19,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:19,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 00:59:19,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:59:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 00:59:19,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:59:19,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:19,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:19,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:19,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:19,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:19,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:59:19,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:19,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:19,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:19,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268961065] [2020-09-25 00:59:19,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:59:19,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 00:59:19,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598852085] [2020-09-25 00:59:19,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 00:59:19,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:19,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 00:59:19,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:19,282 INFO L87 Difference]: Start difference. First operand 374 states and 417 transitions. Second operand 4 states. [2020-09-25 00:59:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:19,502 INFO L93 Difference]: Finished difference Result 606 states and 683 transitions. [2020-09-25 00:59:19,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 00:59:19,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-09-25 00:59:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:19,504 INFO L225 Difference]: With dead ends: 606 [2020-09-25 00:59:19,504 INFO L226 Difference]: Without dead ends: 414 [2020-09-25 00:59:19,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 00:59:19,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-09-25 00:59:19,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 367. [2020-09-25 00:59:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 367 states. [2020-09-25 00:59:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 409 transitions. [2020-09-25 00:59:19,523 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 409 transitions. Word has length 64 [2020-09-25 00:59:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:19,523 INFO L479 AbstractCegarLoop]: Abstraction has 367 states and 409 transitions. [2020-09-25 00:59:19,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 00:59:19,523 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 409 transitions. [2020-09-25 00:59:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 00:59:19,524 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:19,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:19,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-25 00:59:19,525 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:19,525 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-09-25 00:59:19,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:19,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312860480] [2020-09-25 00:59:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:19,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:19,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:20,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:20,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 00:59:20,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:59:20,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 00:59:20,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-25 00:59:20,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 00:59:20,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:59:20,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:59:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:59:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:59:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:59:20,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:59:20,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:59:20,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:59:20,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:59:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:59:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:59:20,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:59:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:59:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:59:20,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312860480] [2020-09-25 00:59:20,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:59:20,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:59:20,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947012223] [2020-09-25 00:59:20,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:59:20,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:59:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:59:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:59:20,312 INFO L87 Difference]: Start difference. First operand 367 states and 409 transitions. Second operand 10 states. [2020-09-25 00:59:20,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:59:20,967 INFO L93 Difference]: Finished difference Result 608 states and 674 transitions. [2020-09-25 00:59:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 00:59:20,968 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-09-25 00:59:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:59:20,971 INFO L225 Difference]: With dead ends: 608 [2020-09-25 00:59:20,971 INFO L226 Difference]: Without dead ends: 548 [2020-09-25 00:59:20,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-09-25 00:59:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-09-25 00:59:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 414. [2020-09-25 00:59:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-09-25 00:59:20,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 464 transitions. [2020-09-25 00:59:20,996 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 464 transitions. Word has length 67 [2020-09-25 00:59:20,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:59:20,996 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 464 transitions. [2020-09-25 00:59:20,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:59:20,996 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 464 transitions. [2020-09-25 00:59:20,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 00:59:20,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:59:20,998 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:59:20,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-25 00:59:20,998 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:59:20,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:59:20,999 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-09-25 00:59:20,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:59:20,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095668034] [2020-09-25 00:59:20,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:59:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:59:21,019 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:59:21,020 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:59:21,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-25 00:59:21,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:59:21 BoogieIcfgContainer [2020-09-25 00:59:21,079 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:59:21,088 INFO L168 Benchmark]: Toolchain (without parser) took 32136.97 ms. Allocated memory was 140.5 MB in the beginning and 455.1 MB in the end (delta: 314.6 MB). Free memory was 102.5 MB in the beginning and 222.5 MB in the end (delta: -120.0 MB). Peak memory consumption was 194.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,089 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,089 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.60 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 172.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,092 INFO L168 Benchmark]: Boogie Preprocessor took 116.61 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 169.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,092 INFO L168 Benchmark]: RCFGBuilder took 816.10 ms. Allocated memory is still 205.0 MB. Free memory was 169.2 MB in the beginning and 106.0 MB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,095 INFO L168 Benchmark]: TraceAbstraction took 30424.29 ms. Allocated memory was 205.0 MB in the beginning and 455.1 MB in the end (delta: 250.1 MB). Free memory was 105.4 MB in the beginning and 222.5 MB in the end (delta: -117.1 MB). Peak memory consumption was 132.9 MB. Max. memory is 7.1 GB. [2020-09-25 00:59:21,101 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.60 ms. Allocated memory was 140.5 MB in the beginning and 205.0 MB in the end (delta: 64.5 MB). Free memory was 101.9 MB in the beginning and 172.6 MB in the end (delta: -70.7 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.61 ms. Allocated memory is still 205.0 MB. Free memory was 172.6 MB in the beginning and 169.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 816.10 ms. Allocated memory is still 205.0 MB. Free memory was 169.2 MB in the beginning and 106.0 MB in the end (delta: 63.2 MB). Peak memory consumption was 63.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30424.29 ms. Allocated memory was 205.0 MB in the beginning and 455.1 MB in the end (delta: 250.1 MB). Free memory was 105.4 MB in the beginning and 222.5 MB in the end (delta: -117.1 MB). Peak memory consumption was 132.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); [L992] list->next = ((void*)0) [L993] COND FALSE !(!(list != ((void*)0))) [L993] COND FALSE !(__VERIFIER_nondet_int()) [L993] list->inner = malloc(sizeof(SLL)) [L993] EXPR list->inner [L993] list->inner->next = ((void*)0) [L993] EXPR list->inner [L993] list->inner->inner = ((void*)0) [L993] EXPR list->inner [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) [L995] SLL* end = list; [L998] COND FALSE !(__VERIFIER_nondet_int()) [L1008] end = ((void*)0) [L1009] end = list [L1012] COND FALSE !(!(((void*)0) != end)) [L1014] COND TRUE ((void*)0) != end [L1016] int len = 0; [L1017] EXPR end->inner [L1017] SLL* inner = end->inner; [L1018] COND TRUE ((void*)0) != inner [L1020] COND TRUE len == 0 [L1021] len = 1 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND FALSE !(!(((void*)0) == inner->inner)) [L1026] EXPR inner->next [L1026] COND FALSE !(!(((void*)0) == inner->next)) [L1027] EXPR inner->inner [L1027] inner = inner->inner [L1028] COND TRUE len == 1 [L1029] EXPR inner->inner [L1029] inner = inner->inner [L1018] COND TRUE ((void*)0) != inner [L1020] COND FALSE !(len == 0) [L1023] len = 2 [L1024] COND FALSE !(!(((void*)0) != inner)) [L1025] EXPR inner->inner [L1025] COND TRUE !(((void*)0) == inner->inner) [L1025] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.2s, OverallIterations: 19, TraceHistogramMax: 2, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2926 SDtfs, 3788 SDslu, 8236 SDs, 0 SdLazy, 5894 SolverSat, 144 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 221 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=18, 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, 18 MinimizatonAttempts, 1356 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 19.2s InterpolantComputationTime, 900 NumberOfCodeBlocks, 900 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 809 ConstructedInterpolants, 0 QuantifiedInterpolants, 300751 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 15 PerfectInterpolantSequences, 11/15 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...